JP6510326B2 - Energy conversion type active control system - Google Patents

Description

  The present invention converts the vibrational energy input to the structure into usable energy as a control force, applies the control force to the structure using the converted energy, and suppresses the vibration of the structure. It relates to an active control system.

  The energy conversion type active vibration control system stores a conversion device such as a hydraulic cylinder or the like that converts vibrational energy input to a structure at the time of earthquake or the like into fluidizable energy such as fluid energy, and the energy converted by the conversion device. It consists of a storage device such as an accumulator and a reuse device such as a drive device (actuator) that applies energy stored in the storage device to a structure as a control force (see Patent Documents 1 to 4).

JP-A-8-218679 (claim 1, paragraphs 0019 to 0029, FIGS. 1 to 3) Unexamined-Japanese-Patent No. 9-324552 (Claim 1, paragraphs 0015-0020, FIG. 1, FIG. 2) Unexamined-Japanese-Patent No. 11-94013 (Claim 1, paragraphs 0008-0021, FIGS. 1-5) Unexamined-Japanese-Patent No. 2005-163317 (claim 1, Paragraphs 0012-0028, FIGS. 1-8)

  In the above-described vibration control system, it takes a certain amount of time from energy conversion in the conversion device to generation of control power from the reuse device, and energy required for generation of control power from the reuse device (conversion energy There is no guarantee that it can be supplied momentarily from the converter.

  Also, there is no guarantee that the amount of conversion energy that the conversion device can convert from the vibrational energy exceeds the amount of energy used (the amount of reuse energy) required when applying the control power of the reuse device. That is, there is no guarantee that the ratio (energy balance) of the conversion energy amount by the conversion device to the use energy amount (reuse energy amount) when applying the control power of the reuse device is larger than one. Therefore, in order to initially generate the control power of the required size from the recycling device, the storage device can store an amount of energy necessary to generate the control power to be applied from the recycling device to the superstructure. It is necessary to have capacity. This capacity increases as the control force generated by the reuse device at the early stage of the earthquake increases.

  On the other hand, since the storage device operates only during unexpected emergencies such as earthquakes, it has always maintained a state where it has stored a large amount of converted energy that may have no prospect of use from the time other than the occurrence of an earthquake or the like. Because of this, the efficiency of the used energy amount (reused energy amount) relative to the converted energy amount is not necessarily high. Moreover, since it is necessary to maintain the storage state of converted energy so that loss of converted energy does not occur as an emergency preparation in the storage device, it is too expensive to do so and it is not practical.

  From the above background, the present invention proposes an energy conversion type active vibration control system capable of achieving effective use of stored energy even at the time of an earthquake while giving a sufficient capacity to a storage device. It is a thing.

In the energy conversion type active vibration control system of the invention according to claim 1, the vibration energy which is input to any region in the structure which causes relative displacement in the horizontal direction with respect to the original position before the vibration generation when the vibration is generated is A conversion device for converting into conversion energy usable as a control force, a storage device for storing the conversion energy converted by the conversion device, and any one of the above-mentioned relative displacements caused by the conversion energy stored in the storage device And a recycling device that applies control power to areas other than the
The storage device has a capacity sufficient to store an amount of conversion energy necessary for generation of the control power by the reuse device, and shares an energy source for regular use that covers an amount of conversion energy satisfying the capacity at an initial time And make it a configuration requirement.

  "Any region in the structure" is any region on a plane or elevation in the structure, and "in-situ" remains at the position before vibration generation even when vibration is generated, or relative It is an area which stays near the position before the occurrence of vibration in contrast to other areas. For example, in the case where the inside of the structure is divided into a region supported by a rigid support layer 8 and a region supported by a flexible support layer 8, the region supported by the rigid support layer 8 when vibration occurs is While trying to stay in the original position, the area supported by the flexible support layer 8 tends to generate a relative displacement in the horizontal direction with respect to the original position before the occurrence of vibration. It is relative whether the support layer 8 is rigid or flexible. The “support layer 8” mentioned here is not a layer that stably supports the pile below the structure in the ground, but is a layer that intervenes between the structure body excluding the pile and the ground surface and supports the structure. It says a certain foundation, a seismic isolation layer, etc.

From this relationship, when the inside of the structure is divided into two or more regions supported by two types of support layers 8 having different horizontal rigidity (hereinafter referred to as rigidity) relatively, The region supported by the rigid support layer 8 corresponds to the “in-situ” in claim 1 and the “region supported by the flexible support layer 8 in the structure” is the “(structure It corresponds to "an area" and "an area other than the above-mentioned area which caused relative displacement" (claim 3).

In addition, when the structure is divided into the lower structure 6 and the upper structure 7 in the upper and lower directions, when the lower structure 6 and the upper structure 7 are supported by the same rigid support layer 8, they are relatively far from the ground Since the upper structure 7 tends to generate a relative displacement in the horizontal direction with respect to the lower structure 6 near the ground when vibration occurs, the lower structure 6 tends to stay in the original position, and the upper structure 7 moves relative to the original position. Attempts to produce relative displacement in the horizontal direction. From this relationship, the lower structure 6 when the structure is divided up and down corresponds to the "original position" in claim 1, and the upper structure 7 "relative to any region (within the structure)" and "relative displacement" Corresponds to a region other than the above-mentioned region which has generated (claim 4). The lower structure 6 and the upper structure 7 are both supported by the rigid support layer 8 and by the flexible support layer 8, one of which is supported by the rigid support layer 8 and the other is supported by the flexible support layer 8. It may be supported by layer 8.

  “The structure is divided up and down” means that the structure is roughly divided roughly into the lower structure 6 and the upper structure 7, and when the structure is viewed in elevation, the structure is divided. As in the case where the boundary between the lower and upper layers is linear, the structure is divided into the lower and upper layers, in addition to the case where it is clearly separated into the lower and upper layers with a specific layer (floor) interposed. Including the case where the boundary line becomes uneven.

  When the structure is roughly divided into the lower structure 6 and the upper structure 7, one of the lower structure 6 and the upper structure 7 is supported by the rigid support layer 8, and the other is supported by the flexible support layer 8. In this case, when either of the lower structure 6 and the upper structure 7 supported by the flexible support layer 8 generates a vibration, the relative displacement from the original position before the generation of the vibration becomes large. It will be in the state which produces relative displacement horizontally with respect to the other side supported.

  However, since the tendency to stay in the in-situ position is considered to be stronger in the region supported by the rigid support layer 8 than in the lower structure 6 when divided into the lower structure 6 and the upper structure 7, Is divided into the lower structure 6 and the upper structure 7, and in the case where each is supported by the different rigid support layers 8, the upper structure 7 supported by the flexible support layer 8 is rigid when the vibration is generated. The horizontal displacement relative to the lower structure 6 supported by 8 is the easiest. Hereinafter, for simplification of the explanation, for convenience, the “in-situ” position is represented by the lower structure 6 and is referred to as the lower structure 6 or the like, “in any of the structures causing relative displacement in the horizontal direction The upper structure 7 is representative of the region of the upper structure 7 and is referred to as the upper structure 7 or the like.

  The phrase “the storage device has a capacity sufficient to store the conversion energy necessary for generation of control power by the reuse device” means that the reuse device gives the superstructure 7 etc. when an earthquake occurs, etc. It means that the storage device is provided with a capacity capable of storing the amount of conversion energy required to generate the control power to be controlled. A permanent energy source is shared in order for the storage device to initially provide an amount of conversion energy that meets this capacity. The capacity is determined in accordance with the magnitude of the maximum control force assumed. The amount of converted energy that the storage device should initially store is the amount of energy (recycled energy described later) required to generate the control power to be applied from the recycling device to the upper structure 7 or the like. "When vibration occurs" means when an earthquake occurs and when wind load is applied. In the following, we say that the earthquake occurred.

  “The storage device shares a constant energy source that supplies conversion energy in an amount sufficient to satisfy the capacity” means that the storage device 3 supplies conversion energy to the reuse device 4 as shown in FIG. 1- (a). It is said that it is also used as a regular energy source as an energy source for obtaining energy. The storage device 3 always shares the energy source, and uses the energy of the constant energy source as conversion energy of an amount that satisfies the capacity of the storage device 3 in an emergency such as when an earthquake occurs. As described above, the conversion energy of an amount satisfying the capacity of the storage device 3 is used to generate a control force to be applied from the recycling device 4 to the upper structure 7 or the like at the time of an earthquake or the like.

  The constant energy source specifically refers to, for example, an accumulator 31 or the like installed as part of the energy source (hydraulic source) of the hydraulic elevator that is always in use, as shown in FIG. 1- (b). Although the accumulator 31 is not commonly used as an energy source of a hydraulic elevator, the accumulator 31 is used as an energy source, and while the hydraulic pump attached to the hydraulic elevator is stopped, the accumulator is not used during an earthquake. 31 can supply hydraulic oil to the hydraulic elevator instead of the hydraulic pump. As a result, the agility of operation of the hydraulic elevator is secured, and there is an advantage that the hydraulic elevator can be operated even during planned and unplanned power outages. In this case, the accumulator 31 as a constant energy source functions as the storage device 3 during an earthquake.

  The control device 32 that starts when an earthquake or the like occurs switches between the state where the accumulator 31 supplies the hydraulic oil to the hydraulic elevator and the state where the accumulator 31 supplies the hydraulic pressure to the hydraulic elevator. A directional control valve or the like is used. In this case, the direction switching valve normally makes the pressure oil of the accumulator 31 flow only to the cylinder of the hydraulic elevator by deenergizing the solenoid, and when an earthquake or the like occurs, the port is switched by energizing the solenoid. It shifts to a state in which the pressure oil 31 flows only to the recycling device 4.

  The energy possessed by the regular energy source is used as conversion energy stored in the storage device 3 at the time of an emergency such as an earthquake, but at normal times other than the earthquake, energy such as oil pressure is supplied to the original energy source. The efficiency of the used energy amount (reused energy amount) relative to the converted energy amount is improved in comparison with the conventional system in which the storage device 3 uses the converted energy only in emergency.

  The constant energy source shared by the storage device 3 can be replaced by an emergency energy source (claim 2). The emergency energy source is also shared by the storage device to cover the conversion energy to be stored by the storage device 3, and the storage device 3 has the capacity of the energy storage device 3 at the time of an emergency such as an earthquake. Use as conversion energy of the amount to satisfy.

  For example, as shown in FIG. 3B, the emergency energy source indicates an emergency power supply etc. such as the storage battery 33 for emergency prepared at the time of a power failure except an earthquake etc. The emergency power supply functions effectively even during planned and unplanned power outages, but since it functions as the storage device 3 during earthquakes, etc., there are more opportunities for use than when it is used only during power outages or only during earthquakes. In this case, the conversion device 2 converts vibrational energy into electric power as conversion energy. The storage battery 33 can also store the vibration energy at the time of the earthquake (main earthquake) and the vibration energy at the aftershock generated after the earthquake in the form of electric power by using a piezoelectric element or the like. Enable to supply power.

  The energy possessed by the emergency energy source is also used as conversion energy stored in the storage device 3 during an emergency such as an earthquake, as with the energy of the regular energy source. Because it is used for the purpose of supplying energy such as power to the original energy source supply destination at the time of emergency such as time, the efficiency of the energy consumption to the energy conversion energy is lower in comparison with the case of using conversion energy only in emergency improves.

  The conversion device 2 is a hydraulic cylinder such as a hydraulic cylinder having a cylinder chamber divided by sandwiching a piston reciprocating in the cylinder as shown in FIG. 4, for example. Pressure fluid such as pressure oil whose pressure has risen is sent to the storage device 3 as fluid energy (pressure energy). In the present invention, this fluid energy is called conversion energy.

  The storage device 3 temporarily stores the pressure liquid as fluid energy, and then sends the pressure liquid to the reuse device 4 when the control force of the reuse device 4 is generated, and the reuse device 4 applies the control force to the upper structure 7 etc. . In the present invention, among the converted energy stored in the storage device 3, the energy used by the recycling device 4 for generation of control power is referred to as recycling energy. The recycling device 4 is, for example, a hydraulic actuator such as a hydraulic actuator having a cylinder chamber divided by sandwiching a piston that reciprocates in the cylinder, and the pressure according to the difference in the amount of pressure fluid supplied to the cylinder chambers on both sides. As a control force.

  For example, as shown in FIG. 4, the storage device 3 sends the converted energy stored therein to the reuse device 4 via the servo valve 45 attached to the reuse device 4 by releasing the pressure liquid. The recycling device 4 uses the pressure difference ΔP between the cylinder chambers 43 and 44 as the control force F by causing the hydraulic fluid distributed to the cylinder chambers 43 and 44 to flow into the cylinder chambers 43 and 44 by the servo valve 45. It is applied to the upper structure 7 grade. The reuse device 4 is used to generate the control force F, and the pressure-reduced hydraulic fluid is discharged to a recovery device 5 such as a hydraulic tank for return to the conversion device 2. The conversion device 2, the storage device 3 and the reuse device 4 constitute a vibration control device 1 which is a unit constituting an active vibration control system. The damping device 1 may include the recovery device 5. The active vibration control system according to claim 1 can be reworded as an active vibration control device.

  The upper structure 7 etc. and the lower structure 6 etc. are the structures divided up and down with the support layer 8 in between, and the lower structure 6 etc. mainly supports the structure (upper structure 7 etc.) above the support layer 8 The upper structure 7 or the like becomes a structure such as a ground structure on the support layer 8 supported by the lower structure 6 or the like. However, since the support layer 8 does not necessarily intervene on the ground surface or foundation, and may intervene in the ground layer as shown in FIG. 5, the lower structure 6 etc. include a part of the ground structure There is also.

  Also, as shown in FIG. 1- (a) and FIG. 2- (a), when the support layer 8 is located at the boundary between the ground and the above-ground structure, the above-ground structure may contain a foundation, in that case Lower structure 6 grade becomes ground. The support layer 8 may be located in the middle of the foundation divided up and down (upper structure 7 etc. and lower structure 6 etc) as shown in FIG. 5, in which case the foundation is the upper structure 7 side and lower structure It separates into 6th grade. The support layer 8 is a flexible support layer in the horizontal direction, such as a base isolation layer mainly shown in FIG. 5 or a low rigidity layer according to the base isolation layer shown in FIG. 6 (claim 5) It does not have to be. The phrase "in which any region in the structure can cause relative displacement in the horizontal direction with respect to the original position" in claims 1 and 2 means that any region (upper structure 7) in the structure is in the original position. It is intended to include a flexible support layer which causes relative displacement in the horizontal direction easily with (under structure 6), and an inflexible support layer which does not easily cause relative displacement.

  However, in order to make the lower structure 6 or the like easily move relative to the lower structure 6 or the like when the control force is applied to the upper structure 7 or the like, the upper portion is applied by applying a smaller control force. Since it is reasonable to move the structure 7 etc. relative to each other, it is appropriate that the upper structure 7 etc. be supported by the flexible support layer 8 in the horizontal direction as shown in FIG. 5 and FIG. ). Support layer 8, which is flexible in the horizontal direction, is a base isolation layer consisting of seismic isolation devices, and a soft first story (low rigidity layer) that causes relative displacement between lower structure 6 etc. and upper structure 7 etc when vibration of lower structure 6 etc. including. The soft first story is a soft-structured layer on the first floor or lower floors, and refers to, for example, "a soft and strong pillar-supported layer".

  In this case, the upper structure 7 or the like is easily shaken relative to the lower structure 6 or the like even when receiving an external force of about wind load, so the habitability of the upper structure 7 or the like may be reduced. For example, by fixing the upper structure 7 or the like with the reuse device 4, it is possible to prevent the upper structure 7 or the like from being vibrated by an external force about the wind load. FIG. 5 shows an example where the above ground structure is divided into the lower structure 6 and the like and the upper structure 7 and the like via the support layer 8 (base isolation layer).

  When the support layer 8 is a flexible support layer in the horizontal direction (claim 5), the magnitude of the control force required to move the upper structure 7 etc. relative to the lower structure 6 etc. Since it is smaller than the case where it is not flexible, there is an advantage that reuse energy stored in the storage device 3 is hard to be consumed, and reuse energy is easily preserved.

  In this case, the conversion device 2 is bridged between the lower structure 6 or the like and the upper structure 7 or the like, and the reuse device 4 is disposed in the upper structure 7 or the like immediately above the flexible support layer 8 Claim 5). That the conversion device 2 is bridged between the lower structure 6 or the like and the upper structure 7 or the like is that the conversion device 2 is disposed on the support layer 8. The storage device 3 is disposed in the vicinity of both the conversion device 2 and the reuse device 4. Although “near both” means an intermediate part between the conversion device 2 and the reuse device 4, the storage device 3 is not necessarily located on a straight line connecting the conversion device 2 and the reuse device 4.

  In the fifth aspect, at the time of the occurrence of an earthquake, etc., the flexible support layer 8 starts to be deformed in the whole structure including the lower structure 6 and the upper structure 7 and the like, and the amount of deformation is large. By being disposed in the layer 8, it is easy to earn more fluid energy (conversion energy).

  In addition, the conversion device is disposed by the reuse device 4 being disposed immediately above the support layer 8 in the upper structure 7 etc., and the storage device 3 being disposed in the vicinity of both the conversion device 2 and the reuse device 4. The distance of the energy transfer means such as wiring, piping, etc. for feeding to the reuse device 4 via the storage device 3 from 2 is shortened. As a result, the amount of loss of energy lost before the conversion energy converted from vibrational energy is sent from the conversion device 2 to the recycling device 4 is reduced. In particular, when the conversion device 2 and the reuse device 4 are juxtaposed to each other at the same position, the distance between the conversion device 2 and the reuse device 4 is the shortest, so the amount of energy loss is the smallest.

  Furthermore, when the horizontal rigidity of the lowermost layer such as the upper structure 7 immediately above the flexible support layer 8 is set lower than the horizontal rigidity of the upper layer above the lowermost layer (claim 6), the upper structure 7 Etc., since the lowermost layer of the upper structure 7 etc. is more easily displaced relative to the upper layer in comparison with the case where the horizontal rigidity of all layers is uniform, the relative displacement of the lowermost layer is constant relative to the lower structure 6 etc. Less control power is required to produce

  In this case, if relative displacement to the lower structure 6 or the like is generated in the lowermost layer of the upper structure 7 or the like, the entire upper structure 7 or the like generates a relative displacement to the lower structure 6 or the like. When the control force is applied to the upper structure 7 or the like, it is possible to cause relative displacement to the lower structure 6 or the like in the entire upper structure 7 or the like even with a smaller control force. Setting the horizontal rigidity of the lowermost layer of the upper structure 7 or the like to be lower than that of the upper layer lowers the rigidity of the lowermost column, or the columns and beams, making the lowermost layer relatively softer than the upper layer It is obtained by

  The storage device shares a constant energy source or an emergency energy source to make the regular or emergency energy source function as a storage device during an earthquake, while the regular or emergency energy source is other than an earthquake Since it can be used as an energy source (power source) for time use, the energy source stored in the storage device can be effectively used, and the practicability of the vibration control system is enhanced.

(A) shows a schematic view of the vibration control system when the storage device always shares the energy source, and (b) shows an example of the vibration control system when the regular energy source is the hydraulic unit of the hydraulic elevator FIG. It is the schematic which showed the specific example in case the control apparatus shown to FIG. 1- (b) is a direction control valve. (A) is a schematic view of the vibration control system when the storage devices share the emergency energy source, (b) shows an example of the vibration control system when the emergency energy source is an emergency power supply FIG. It is the schematic (hydraulic circuit diagram) which showed the structural example of this vibration control system. It is the schematic which showed the example of the vibration control system when an upper structure is supported via a base isolation layer on a lower structure, and the converter is bridged between a lower structure and an upper structure. It is the schematic which showed the specific example of the example shown in FIG. It is the schematic which showed the example of the vibration control system when horizontal rigidity of the lowermost layer of the upper structure which is the upper layer of the seismic isolation layer is set lower than horizontal rigidity of the upper layer above the lowest layer. (A) is a schematic view showing a specific example other than the example shown in FIGS. 5 to 7, (b) is a plan view passing through the seismic isolation layer, (c) is a plan view of the upper structure, (d) is a seismic isolation It is a top view of a layer.

1 and 2 show vibration energy input to any region in the structure such as the lower structure 6 or the like in the upper structure 7 that causes relative displacement in the horizontal direction with respect to the original position in the structure during earthquakes etc. a converter 2 for converting the converted energy can be utilized as a control force, a storage device 3 for storing the converted transformed energy conversion device 2, the conversion energy stored in the storage device 3, in the structure, The structural example of the vibration control system (vibration control apparatus 1) provided with the reuse apparatus 4 provided as control force to area | regions other than the said any area | region which produced relative displacement is shown. The storage device 3 has a capacity sufficient to store the converted energy necessary for generation of control power by the recycling device 4 and is an energy source for regular use to provide an amount of converted energy satisfying the capacity at an initial time, or in an emergency Share a common energy source.

  As described above, the "original position in the structure" is an area which remains at the position before the generation of the vibration even when the vibration is generated, or a position near the position before the generation of the vibration, "an any area in the structure" Is an area either on a plane or in an elevation in the structure, but in the following, "the original position in the structure" is represented by the lower structure 6, "relative to the original position in the horizontal direction The superstructure 7 represents any region in the structure causing the displacement. That is, in the following, the lower structure 6 refers to "the original position in the structure", and the upper structure 7 refers to "an area in the structure that causes relative displacement in the horizontal direction with respect to the original position".

Although the upper structure 7 is supported on the lower structure 6 through the support layer 8, the magnitude of the control force to be applied to the upper structure 7 from the reuse device 4 other than the installation position of the conversion device 2 is suppressed. In order to preserve the conversion energy (recycling energy) stored in 3, it is advantageous that the support layer 8 is a horizontally flexible layer like a seismic isolation layer as shown in FIGS. is there.

  The conversion device 2 converts the vibration energy into conversion energy using the relative displacement of the upper structure 7 with respect to the lower structure 6 generated at the time of earthquake or the like, so the upper structure 7 and the lower portion generate relative displacement as shown in FIG. It is erected straddling the structure 6. In order to reduce the amount of energy loss during movement from the conversion device 2 to the reuse device 4, the reuse device 4 is mainly disposed in the upper structure 7 immediately above the support layer 8, and the storage device 3 is It is disposed in the vicinity of both the conversion device 2 and the reuse device 4 or at an intermediate position of both. The recycling device 4 uses the conversion energy converted by the conversion device 2 and stored in the storage device 3 as recycling energy. For example, regardless of the relative displacement between the upper structure 7 and the lower structure 6, the upper structure 7 is made to stay at the position before displacement of the lower structure 6 (by reducing the amount of relative displacement with respect to the ground), and a control force is applied to make it stand still in the absolute space.

  The vibration control device 1 is connected to a conversion device 2 such as a hydraulic cylinder that converts vibration energy into fluid energy as conversion energy as shown in FIG. 4 and the conversion device 2 and stores the fluid energy converted by the conversion device 2 And a recycling device 4 connected to the storage device 3 and outputting control force to be applied to the upper structure 7 using fluid energy (pressure liquid) stored in the storage device 3. Be done. On the downstream side of the recycling device 4, a hydraulic tank that is discharged from the cylinder chambers 43 and 44 when the control force from the recycling device 4 is output, and the hydraulic fluid whose pressure has dropped is recovered and returned to the conversion device 2 , Etc. are connected. The recovery device 5 is connected to the conversion device 2.

Converter 2 is specifically a cylinder 21 as shown in FIG. 4, consists piston 22 reciprocating in the cylinder 21, the cylinder 21 is divided into both sides of the cylinder chamber 23, 24 across the piston 22, As described above, it is installed in a state of being straddled between the lower structure 6 and the upper structure 7 which are divided up and down with the support layer 8 interposed therebetween. The cylinder 21 is connected to one of the lower structure 6 and the upper structure 7 as shown in FIG. 3, and the piston 22 is connected to the other.

  When the upper structure 7 causes relative movement with respect to the lower structure 6 when the lower structure 6 vibrates due to an earthquake, the conversion device 2 raises the hydraulic pressure in one cylinder chamber 23 (24) to increase the pressure A pressure fluid is generated, and the pressure fluid is fed to the storage device 3 in the state of high pressure. The storage device 3 stores high pressure hydraulic fluid as fluid energy (pressure energy). When the lower structure 6 vibrates, the piston 22 reciprocates in the cylinder 21, so high-pressure hydraulic fluid is alternately generated in the cylinder chambers 23 and 24 on both sides.

A cylinder 41 which liquid is filled in the recycling device 4 hydraulic fluid or the like similarly to the converter 2, from the piston 42 in the cylinder 41 reciprocates, partitioning the cylinder 41 on opposite sides of the cylinder chamber 43, 44 It is installed in a state of being straddled between the lower structure 6 and the upper structure 7, connected to one of the lower structure 6 and the upper structure 7 in the cylinder 41, and connected to the other in the piston 42.

  A servo valve 45 for controlling the inflow of hydraulic fluid in the storage device 3 to the cylinder chambers 43, 44 between the storage device 3 and the cylinder chambers 43, 44 on both sides of the piston 42 of the reuse device 4 Are connected, and a flow control valve 46 is connected between the cylinder chambers 43, 44 on both sides to control the amount of movement of hydraulic fluid between the cylinder chambers 43, 44 on both sides. The flow control valve 46 may also be connected to the converter 2 in order to limit the amount of conversion energy converted by the converter 2 into the storage device 3.

  The flow control valve 46 of the recycling device 4 controls the amount of movement of hydraulic fluid between the cylinder chambers 43 and 44 on both sides, as shown in FIG. 4, between the cylinder chambers 43 and 44 on both sides of the recycling device 4. Since the flow rate Q0 is to be generated, when the pressure fluid of the amount of Q1 + Q3 is fed to the reuse device 4 when the servo valve 45 is opened, the pressure fluid of the flow rate Q1-Q2-Q0 is supplied to one cylinder chamber 43. The pressure fluid of Q3-Q4 + Q0 is fed into the other cylinder chamber 44. -Q2 and -Q4 mean the amount of pressure liquid collected by the collection device 5;

  At this time, a pressure Pa1 corresponding to Q1-Q2-Q0 and a pressure Pa2 corresponding to Q3-Q4 + Q0 are generated in each cylinder chamber 43, 44 of the reuse device 4, and the pressure difference ΔP Granted to Structure 7. Control of the servo valve 45 and the flow control valve 46 is performed based on the pressure difference ΔP in the cylinder chambers 43 and 44 on both sides or the moving speed V of the piston 42 and a command from the controller using the control force command F.

  Fig. 1 shows an example in which the storage device 3 shares a constant energy source for supplying a sufficient amount of converted energy at the initial time, and Fig. 2 shows an example in which an emergency energy source is shared. Indicates FIG. 1- (b) shows an example in which the energy source for regular use is the accumulator 31 which constitutes a part of the hydraulic pressure source of the hydraulic elevator. In this example, since the accumulator 31 as an always-use energy source also serves as the storage device 3, the accumulator 31 has a capacity sufficient to store the conversion energy of the amount necessary for generation of control power by the reuse device 4 The amount of hydraulic fluid that satisfies this volume is stored as conversion energy.

  When an earthquake occurs, the pressure liquid as the conversion energy accumulated in the accumulator 31 is fed into the recycling device 4 and the recycling device 4 distributes the pressure liquid into the cylinder chambers 43 and 44 as shown in FIG. The pressure difference ΔP is generated between the two cylinder chambers 43 and 44 by flowing in, and this pressure difference ΔP is applied to the upper structure 7 as the control force F.

  FIG. 2 shows an example where a direction switching valve is used as a specific example of the control device 32 shown in FIG. 1- (b). In this example, when the normal solenoid is off, the pressure oil in the accumulator 31 flows to the hydraulic cylinder of the hydraulic elevator, and when the solenoid is turned on, the direction switching valve is switched and the pressure oil in the accumulator 31 is It shifts to the state of flowing to the reuse device 4.

  FIG. 3B shows an example where the emergency energy source is the storage battery 33 for emergency. In this example, since the storage battery 33 doubles as the storage device 3, the storage battery 33 has a capacity sufficient to store the conversion energy of the amount necessary for generation of control power by the reuse device 4, and an amount satisfying the capacity at the initial time Power is stored as conversion energy. When an earthquake occurs, power as converted energy stored in the storage battery 33 is sent to the reuse device 4.

  FIG. 5 shows an arrangement example of the vibration control system when the upper structure 7 is supported on the lower structure 6 via the horizontally flexible supporting layer 8 such as a base isolation layer. Fig. 5 shows an example where the seismic isolation device 81 constituting the seismic isolation layer is interposed in the middle layer of the terrestrial structure, and the terrestrial structure is divided into the lower structure 6 and the upper structure 7. The arrangement position of the (base isolation layer) may be between the foundation or the ground and the ground structure.

  In the example of FIG. 5, since the upper structure 7 supported by the seismic isolation device 81 is easily displaced relative to the lower structure 6 when an earthquake or the like occurs, the upper structure 7 is displaced relative to the lower structure 6 to The control force to be applied from the recycling device 4 in order to reduce the relative displacement amount with respect to the above may be smaller than in the case where the support layer 8 is not the seismic isolation layer.

  FIG. 6 slightly embodies the example of FIG. 5 and bridges the conversion device 2 between the upper structure 7 and the lower structure 6, and the lower floor slab of the lowermost layer of the upper structure 7 while reusing the reuse device 4. It shows a state of being erected between the (bottom plate) 71 and the aseismatic element 73 such as a brace which is provided under the floor plate (ceiling plate) 72 on the upper side.

  FIG. 7 arranges the seismic isolation layer (base isolation device 81) as the support layer 8 between the foundation (ground) and the above ground structure, and causes relative displacement of the upper structure 7 to the lower structure 6 with a smaller control force. In the example, the horizontal rigidity of the lowermost layer of the upper structure 7 which is the upper layer of the support layer 8 is set lower than the horizontal rigidity of the upper layer above the lowermost layer.

  Even in the example of FIG. 7, the upper structure 7 supported by the seismic isolation device 81 is easily displaced relative to the lower structure 6 when the support layer 8 is a seismic isolation layer, but in addition to that, The lowermost layer of the structure 7 is more likely to be displaced relative to the upper layer above it, so that if the lowermost layer of the upper structure 7 is displaced relative to the lower structure 6, the entire upper structure 7 including the upper layer follows the lowermost layer. Can be displaced relative to the lower structure 6. That is, only the lowermost layer of the upper structure 7 can be displaced relative to the lower structure 6 by only displacing only the lowermost layer of the upper structure 7. If the control force is uniformly applied to the entire upper structure 7, the control force to be applied to the upper structure 7 by the reuse device 4 can be reduced.

  FIG. 8 is similar to the example shown in FIGS. 5 to 7 in that the upper structure 7 is supported on the lower structure 6 via the seismic isolation layer which is the flexible support layer 8, but is shown in FIGS. Unlike the example, the conversion device 2 is installed in each layer of the upper structure 7 composed of a plurality of layers supported by the seismic isolation layer, and the reuse device 4 is constructed between the lower structure 6 and the upper structure 7; The example at the time of arrange | positioning the storage device 3 in the lowest layer of the upper structure 7 which is the vicinity of the reuse apparatus 4 is shown.

  In this example, vibration energy generated in each layer of the upper structure 7 is converted into conversion energy in each layer unit, sent to the storage device 3 in the lowermost layer of the upper structure 7 and recovered, and then recovered from the recycling device 4 throughout the upper structure 7 A control force F is applied to the upper structure 7.

1 ...... Control equipment,
2 変 換 converter 21 ...... cylinder 22 ピ ス ト ン piston 23, 24 シ リ ン ダ cylinder chamber,
3 ... storage device, 31 ... accumulator, 32 ... control device, 33 ... storage battery,
4 Reuse device 41: cylinder 42: piston 43, 44: cylinder chamber 45: servo valve 46: flow control valve
5 ...... Recovery device,
6 ...... Substructure,
7 ...... Upper structure, 71 ...... Lower floor plate, 72 ...... Upper floor plate, 73 ...... Seismic element,
8: Support layer, 81: Seismic isolation device.

Claims (6)

A conversion device for converting vibration energy input to any region in the structure that causes relative displacement in the horizontal direction relative to the original position before vibration generation when vibration is generated, and this conversion device, A storage device for storing converted energy converted by the device, and a reuse device for applying the converted energy stored in the storage device as a control force to a region other than the above-mentioned regions where relative displacement has occurred. ,
The storage device has a capacity sufficient to store an amount of converted energy necessary for generation of the control power by the reuse device, and shares an energy source for always supplying an amount of converted energy satisfying the capacity at an initial time point An energy conversion type active vibration control system characterized by A conversion device for converting vibration energy input to any region in the structure that causes relative displacement in the horizontal direction relative to the original position before vibration generation when vibration is generated, and this conversion device, A storage device for storing converted energy converted by the device, and a reuse device for applying the converted energy stored in the storage device as a control force to a region other than the above-mentioned regions where relative displacement has occurred. ,
The storage device has a capacity sufficient to store an amount of converted energy necessary for generation of the control force by the reuse device, and an emergency energy source for supplying an amount of converted energy satisfying the capacity at an initial time An energy conversion type active vibration control system characterized by sharing. The original position before the occurrence of the vibration is an area supported by a rigid support layer in the structure, and the area other than any one of the areas and any one of the areas is supported by a flexible support layer in the structure The energy conversion type active vibration control system according to claim 1 or 2, characterized in that The original position before the occurrence of the vibration is a lower structure when the structure is divided up and down, and the region other than any one of the regions and any one of the regions is an upper structure. The energy conversion type active vibration control system according to any one of claims 1 to 3.   The upper structure is horizontally supported on the lower structure via a flexible support layer, the conversion device is bridged between the lower structure and the upper structure, and the reuse device is the upper structure. The energy conversion active system according to claim 4, wherein the energy conversion type active device is disposed immediately above the support layer, and the storage device is disposed in the vicinity of both the conversion device and the reuse device. Tremor system. The energy conversion type active vibration control system according to claim 5, wherein the horizontal rigidity of the lowermost layer of the upper structure which is the upper layer of the support layer is set lower than the horizontal rigidity of the upper layer above the lowermost layer. .

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