JP5206624B2 - Control device for engagement device - Google Patents

Description

  The present invention relates to a technical field of a control device for an engagement device that is engaged by energization, for example.

  As this type of engagement device, for example, there is one used as an electromagnetic clutch mechanism or an electromagnetic brake mechanism mounted on a vehicle such as an automobile. As a specific configuration of the engagement device, for example, a device that obtains power by applying a pulse voltage to an electromagnetic coil that generates a magnetic force when energized (so-called electromagnetic actuator) is used (for example, Patent Document 1). reference).

  In such an engagement device, switching between engagement and disengagement is possible by controlling a current value or a voltage value to be energized. Therefore, if appropriate energization is not performed, power consumption increases wastefully. End up. As a method for obtaining an appropriate current value or voltage value for driving the engagement device, the voltage applied to the electromagnetic coil is lowered, and the value when the rotation speed of the engagement device becomes equal to or higher than the threshold value is an appropriate value. Has been proposed (see, for example, Patent Document 2).

Japanese Laid-Open Patent Publication No. 4-015324 Hei 1-158230

  However, in the engagement device as described in Patent Document 2 described above, the coil voltage is gradually lowered after the coil voltage is set to a high state, so that the power consumption increases temporarily temporarily. That is, while trying to reduce power consumption by holding an appropriate voltage value, power consumption increases when performing an operation to hold an appropriate voltage value. As a result, there is a technical problem that there is a possibility that efficient power consumption cannot be reduced.

  The present invention has been made in view of, for example, the above-described problems, and controls an engagement device that can more appropriately control engagement by appropriately responding to a change in current for engagement. It is an object to provide an apparatus and a control method.

In order to solve the above-described problem, the control device for an engagement device according to the present invention is a control device for an engagement device in which the engagement of the engagement portion is controlled by energization, and the current for controlling the engagement is Current supply means for supplying to the engagement device; determination means for determining whether or not the engagement device is in a predetermined state; and when the engagement device is determined to be in the predetermined state, the engagement The engagement of the engagement device is controlled by controlling the learning means for performing control for learning the current value to be engaged by the device and the current supply means for supplying the current of the learned current value. Engagement learning means, and the learning means increases the current value of the current supplied by the current supply means stepwise from zero, and the current value is controlled by the current value control means. When being raised, the engagement device engages Detecting means for detecting a parameter, and first storage means for storing, as a first current value, a current value when the parameter relating to the engagement becomes a predetermined value or more, and the engagement control means Controls the engagement of the engagement device by controlling the current supply means to supply the current of the first current value .

  According to the control device for an engagement device of the present invention, at the time of the operation, current is supplied to the engagement device by the current supply means, whereby the engagement portion in the engagement device is controlled. That is, the behavior of the engaging portion in the engaging device is controlled by changing the current value of the current supplied to the engaging device. Thereby, engagement and release of the engagement device are controlled. Such an engagement device is mounted on a vehicle such as an automobile, and can be used as an electromagnetic clutch mechanism or an electromagnetic brake mechanism.

  In the present invention, at the time of the above-described operation, the determination unit determines whether or not the engagement device is in a predetermined state. Here, the “predetermined state” is set as a determination condition for determining whether or not to learn a current value by a learning means described later. More specifically, the predetermined state is theoretically, experimentally, or empirically derived and set in advance as a state to be learned in the engagement device. The determination means detects the state of the engagement device using, for example, various sensors or meters, and determines whether or not the detected state is a predetermined state. By determining whether or not the engagement device is in a predetermined state, it is possible to prevent redundant learning of the current value.

  When the determination unit determines that the engagement device is in the predetermined state, the learning unit performs control to learn a current value with which the engagement device is engaged. That is, the current value supplied when the engaging device is engaged is stored. The “current value to be engaged” is a current value that is a threshold value for switching between an engaged state and a released state of the engaging device, and includes a current value when the released engaging portion is engaged. In addition, a current value when the engaged engagement portion is released may be included.

  When the current value to be engaged is learned, the engagement control means controls the engagement in the engagement device based on the learned current value. That is, switching between engagement and release is performed by the learned current value. Since the learned current value is a value stored as the current value to be engaged, the engagement of the engagement device can be reliably controlled.

  Here, in particular, the current value to be engaged by the engagement device is not always kept constant, but changes with the passage of time and various operating conditions. Therefore, if the learning described above is not performed, there is a possibility that a problem that the engagement cannot be accurately controlled due to a change in the current value to be engaged may occur.

  However, in the present invention, as described above, every time the engaging device enters a predetermined state, learning of the current value to be engaged is performed. That is, it is possible to detect a change in the current value to be engaged and respond to it each time. Therefore, for example, it can be prevented that an unnecessarily large current is supplied to the device or that the device cannot be engaged when it should be engaged. In addition, it is possible to control the engagement of the device more suitably if a predetermined state as a learning determination condition is set after predicting a situation in which the current value to be engaged in the engagement device changes. Become.

  As described above, according to the control device for an engagement device of the present invention, it is possible to more appropriately control the engagement by appropriately responding to a change in current for the engagement device to engage. is there.

  In one aspect of the control apparatus for an engagement device according to the present invention, the learning means includes a current value control means for stepwise increasing a current value of the current supplied by the current supply means, and a current value by the current value control means. The first current value is a detection means for detecting a parameter related to engagement in the engagement device and a current value when the parameter related to the engagement is equal to or greater than a predetermined value. First engagement means for storing, and the engagement control means controls the engagement of the engagement device by controlling the current supply means so as to supply the current of the first current value. Like that.

  According to this aspect, when the learning operation by the learning unit is performed, first, the current value of the current supplied by the current supply unit is increased stepwise by the current value control unit. Here, “increase in steps” means that the current value is gradually increased so that the current value to be learned can be determined. In other words, the current value may be raised in any way as long as the current value to be learned can be determined. If the current value is increased from zero, it is possible to detect the minimum current value to be learned.

  When the current value is increased by the current value control means, a parameter relating to engagement in the engagement device is detected by the detection means. Here, the “parameter relating to engagement” is a parameter for determining whether or not the engagement device is engaged. For example, if the engagement device has a rotating member, the torque capacity or For example, the number of rotations. Such parameters change as the current value increases. In addition, the parameter regarding the detected engagement may be one, and may be plural.

  In this aspect, in particular, the value of the current when the detected parameter related to engagement becomes equal to or greater than a predetermined value is stored in the first storage means as the first current value. That is, the value of the current when the parameter related to engagement becomes equal to or greater than a predetermined value is learned as the current value for engaging the engagement device. Here, the “predetermined value” is a threshold value for determining that the engaging device is engaged, and is derived theoretically, experimentally, or empirically and set in advance. Specifically, for example, a predetermined value that is a threshold value is determined by actually simulating engagement in the engagement device. In addition, when there are a plurality of parameters related to the detected engagement, the current value when one of the parameters becomes a predetermined value or more may be set as the first current value, or all parameters or a predetermined number The current value when the parameter becomes greater than or equal to a predetermined value may be the first current value.

  When the first current value is stored, the engagement control means controls the engagement in the engagement device based on the first current value. That is, switching between engagement and release is performed by the first current value. Since the first current value is a value determined based on a parameter related to engagement, the engagement of the engagement device can be reliably controlled.

  Further, in this aspect, when the first current value is obtained, the current value is gradually increased from a low state. For this reason, compared with the case where the current value is gradually decreased from a high state to obtain the first current value, the power consumption can be significantly reduced.

  In the aspect in which the learning unit includes the current value control unit and the storage unit, the learning unit energizes the first current value after the first current value is stored in the first storage unit. A verification means for verifying whether the parameter relating to the engagement is equal to or greater than the predetermined value; and in the verification means, the first current when the parameter relating to the engagement is equal to or greater than the predetermined value. And a second storage means for storing a value as a second current value, wherein the engagement control means supplies the current of the second current value instead of the first current value. It may be configured to control the engagement of the engagement device by controlling the means.

  If comprised in this way, after the 1st electric current value is memorize | stored in the 1st memory | storage means, electricity supply of the 1st electric current value with respect to an engagement apparatus will be performed by a test | inspection means, and the parameter regarding the engagement in that case will be predetermined value. Whether or not it is above is tested. That is, it is confirmed whether or not the parameter relating to the engagement exceeds a predetermined value by the first current value. Such a confirmation operation can be sufficiently effective even once, but may be performed a plurality of times.

  In the verification by the verification means, when the parameter relating to engagement becomes a predetermined value or more, the first current value is stored as the second current value in the second storage means. In other words, the first current value is stored as a second current value that can be more reliably controlled by being verified by the verification means. The first storage means and the second storage means here may be the same storage means. In this case, the second current value may be stored so as to be overwritten on the first current value, or may be stored in a storage area different from the first current value.

  When the second current value is stored, the engagement control means controls the engagement in the engagement device based on the second current value. That is, switching between engagement and disengagement is performed by the second current value instead of the first current value. Since the second current value is a value determined by the test, the engagement of the engagement device can be controlled more reliably.

  In the aspect in which the learning means further includes the verification means and the second storage means, the current value control means, when the verification means determines that the parameter relating to the engagement does not exceed the predetermined value, the engagement value. The current value supplied to the combined device is further increased stepwise from the first current value, and the second storage means sets the current value when the parameter related to the engagement is equal to or greater than the predetermined value to the second value. You may comprise so that it may memorize | store as an electric current value.

  With this configuration, when the parameter relating to engagement does not exceed a predetermined value in the verification by the verification unit, the current value supplied to the engagement device is further stepped from the first current value by the current value control unit. Raised. Note that the parameter relating to the engagement in the engagement device at this time is detected by the detection means.

  In this aspect, in particular, the value of the current when the parameter related to engagement becomes equal to or greater than a predetermined value is stored in the second storage means as the second current value. That is, by further increasing the first current value, the value of the current when the parameter related to engagement becomes equal to or greater than a predetermined value is learned as the current value for engaging the engagement device.

  Even when the second current value is stored as described above, an accidental erroneous current value (that is, a current value at which engagement cannot be accurately controlled) is stored as the first current value. The second current value that can accurately control the engagement can be learned as a new current value. Therefore, the engagement of the engagement device can be controlled more reliably.

  Further, when the second current value is obtained, the current value is gradually increased from the first current value, so that the second current value can be detected with a minimum current. That is, compared with the case where the second current value is obtained by appropriately changing the current value from an arbitrary value, the power consumption can be significantly reduced.

  In another aspect of the control device for an engagement device of the present invention, the predetermined state is a state in which a current value to be engaged with the engagement device is not learned by the learning means.

  According to this aspect, when the current value to be engaged by the engaging device is not learned, the learning unit learns the current value. As a result, the engagement of the engagement device can be controlled by the learned current value at all times. Therefore, the engagement of the engagement device can be controlled more reliably. Examples of the situation in which the first current value is not stored include an initial operation of the engagement device and a return from an abnormality or failure.

  In another aspect of the control device for an engagement device of the present invention, the predetermined state is a state in which the engagement device is engaged a predetermined number of times or more.

  According to this aspect, the number of engagements of the engagement device is counted, and when the counted number of engagements exceeds a predetermined number, learning of the current value is performed by the learning means. Here, the “predetermined number of times” is a threshold value for determining that a change has occurred in the state of the apparatus due to many engagements, and is set in advance. As a result, it is possible to suitably cope with a change in the current value to be engaged due to a change in the state of the apparatus.

  It should be noted that immediate learning does not have to be performed when the number of engagements exceeds the predetermined number, and the engagement is not less than the predetermined number of times, and the operation of the apparatus is not hindered even if the learning operation is performed. In some cases, learning may be performed. Further, the number of engagements of the engagement device to be counted is typically initialized every time the current value is learned. Alternatively, a plurality of predetermined times may be set at predetermined intervals.

  In another aspect of the control device for an engagement device of the present invention, the predetermined state is a state in which it is determined that the wear of the engagement portion is equal to or greater than a predetermined threshold.

  According to this aspect, the wear of the engagement portion in the engagement device is monitored, and when it is determined that the wear of the engagement portion is abnormal for the predetermined threshold, the learning unit learns the current value. Here, the “predetermined threshold value” is a threshold value for determining whether or not the engaging portion is worn as the current value to be engaged changes, and is set in advance. Thereby, it becomes possible to respond appropriately to changes in the current value to be engaged due to wear of the engaging portion.

  The same effect can be obtained not by monitoring the wear itself but also by monitoring a high-load operation that causes wear. Specifically, if the learning means learns the current value immediately after a high load operation or the like, it is possible to suitably cope with a change in the engaged current value.

  In another aspect of the control device for an engagement device of the present invention, the predetermined state is that the electromagnetic brake slips over a predetermined width when the engagement device is used as an electromagnetic brake that performs braking by engagement. This is the state where

  According to this aspect, the engagement device is used as an electromagnetic brake that performs braking by engagement. Then, when the electromagnetic brake slips over a predetermined width, the learning means learns the current value. Here, the “predetermined width” is a threshold value for determining whether or not the electromagnetic brake slips as the engaging current value changes, and is set in advance. Thereby, the change of the electric current value to engage can be detected from the slip width of the electromagnetic brake. Therefore, it is possible to appropriately cope with a change in the current value to be engaged.

  The effect | action and other gain of this invention are clarified from the form for implementing invention demonstrated below.

It is a schematic structure figure showing roughly the composition of the hybrid vehicle by which the engaging device concerning an embodiment is carried. It is the elements on larger scale which show the concrete structure of the engaging apparatus which concerns on embodiment. It is a block diagram which shows the structure of the control apparatus of the engaging apparatus which concerns on embodiment. It is a flowchart which shows operation | movement of the control apparatus of the engaging apparatus which concerns on embodiment. It is a flowchart which shows the flow of the process in an implementation determination phase. It is a flowchart which shows the flow of the process in an electric current learning phase. It is a flowchart which shows the flow of the process in an electric current verification phase.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Engagement device>
First, an engagement device controlled by the control device for an engagement device according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic configuration diagram schematically showing a configuration of a hybrid vehicle on which the engagement device according to the present embodiment is mounted, and FIG. 2 shows a specific configuration of the engagement device according to the present embodiment. FIG. In the following, a case where the engagement device according to the present embodiment is used as an electromagnetic brake mounted on a hybrid vehicle will be described as an example.

  In FIG. 1, the hybrid vehicle includes an engine 200, a power split mechanism 300, a motor generator MG1 (hereinafter appropriately referred to as “MG1”), a motor generator MG2 (hereinafter appropriately referred to as “MG2”), An electromagnetic brake 500 is provided.

  The engine 200 is, for example, a gasoline engine, and is configured to function as a main power source of the hybrid vehicle. More specifically, the engine 200 includes, for example, a 2-cycle or 4-cycle reciprocating engine, and has at least one cylinder. In the combustion chamber inside the cylinder, the engine 200 includes various fuels such as gasoline, light oil, or alcohol. The engine is configured to be able to take out the force generated when the gas is burned as a driving force through a physical or mechanical transmission means such as a piston, a connecting rod, and a crankshaft as appropriate.

  The power split mechanism 300 is configured to include, for example, a plurality of gears, and engine torque supplied from the engine 200 via the crankshaft is determined by a plurality of gears according to a predetermined ratio (depending on the gear ratio between the gears). Distribution). As a result, the power of the engine 200 can be divided into two systems. The power split by the power split mechanism 300 is transmitted to the wheels 22 via a drive shaft or the like.

  Motor generator MG1 is a motor generator and has a power running function for converting electrical energy into kinetic energy and a regeneration function for converting kinetic energy into electrical energy. The motor generator MG2 is also a motor generator similar to the motor generator MG1, and has a power running function that converts electrical energy into kinetic energy and a regeneration function that converts kinetic energy into electrical energy. Although illustration is omitted here, the hybrid vehicle is provided with a battery as a rechargeable power storage unit that functions as a power supply source for powering the motor generator MG1 and the motor generator MG2.

  The electromagnetic brake 500 is an example of the “engagement device” of the present invention, and is configured to be locked when engaged and to reduce the speed of the hybrid vehicle.

  In FIG. 2, the electromagnetic brake 500 includes an electromagnetic coil 510, a fixed body 520, a spline 530, an armature 540, and a rotating body 550.

  The electromagnetic coil 510 is fixed to the fixed body 520 and functions as an electromagnet when energized. The armature 540 is fixed to the fixed body 520 via a spline 530 that can slide in the axial direction.

  When the electromagnetic coil 510 is energized, the armature 540 is attracted by the magnetic force generated by the electromagnetic coil 510 becoming an electromagnet. The armature 540 is moved by being attracted by the magnetic force, and the rotating body 550 is locked (that is, engaged), whereby the braking operation by the electromagnetic brake 500 is performed.

<Control device for engagement device>
Next, a control device for the engagement device that controls the above-described engagement device 500 will be described with reference to FIGS. 3 to 7.

  First, the configuration of the control device for the engagement device will be described with reference to FIG. FIG. 3 is a block diagram showing the configuration of the control device for the engagement device according to the embodiment.

  In FIG. 3, the control device for the engagement device according to the present embodiment is configured as a control unit 100 that is electrically connected to an electromagnetic brake 500 that is the engagement device. The control unit 100 includes, for example, an arithmetic circuit and a memory, and is configured as a part of an ECU (Electronic Control Unit) that is a control unit that controls the entire vehicle. Or you may comprise as a control unit different from ECU.

  The control unit 100 includes a current supply unit 110, a determination unit 120, a current value control unit 130, a detection unit 140, a first storage unit 150, a test unit 160, a second storage unit 170, and engagement control. Unit 180.

  The current supply unit 110 is an example of the “current supply unit” in the present invention, and controls the engagement by supplying a current to the electromagnetic brake 500.

  The determination unit 120 is an example of the “determination unit” of the present invention, and determines whether or not the state of the electromagnetic brake 500 is in a state where the current value should be learned.

  The current value control unit 130 is an example of the “current value control unit” in the present invention, and controls the current value of the current supplied from the current supply unit 110 to the electromagnetic brake 500.

  The detection unit 140 is an example of the “detection unit” in the present invention, and detects parameters (for example, torque capacity, rotation speed, etc.) related to the engagement of the electromagnetic brake 500.

  The first storage unit 150 is an example of the “first storage unit” in the present invention, and can store a current value when the electromagnetic brake 500 is engaged as a suction start current value. The suction start current value here is an example of the “first current” in the present invention.

  The verification unit 160 is an example of the “verification unit” of the present invention, and confirms whether or not the engagement of the electromagnetic brake 500 can be controlled with the current value stored in the first storage unit 150.

  The second storage unit 170 is an example of the “second storage unit” in the present invention, and can store a current value when the electromagnetic brake 500 is engaged as an attractive current instruction value. The attracting current instruction value here is an example of the “second current” in the present invention. The first storage unit 150 and the second storage unit 170 may be configured as the same storage unit, for example.

  The engagement control unit 180 is an example of the “engagement control unit” of the present invention, and controls the engagement of the electromagnetic brake 500 by the current value stored in the first storage unit 150 or the second storage unit 170.

  Next, the operation of the control device for the engagement device will be described with reference to FIGS. 4 to 7 in addition to FIG. FIG. 4 is a flowchart showing the operation of the control device for the engagement device according to the present embodiment, and FIG. 5 is a flowchart showing the flow of processing in the implementation determination phase. FIG. 6 is a flowchart showing a process flow in the current learning phase, and FIG. 7 is a flowchart showing a process flow in the current verification phase.

  In FIG. 4, when the control unit 100 controls the electromagnetic brake 500, first, the determination unit 120 performs an execution determination phase (step S11). The execution determination phase is for determining whether or not to perform an operation of learning a current value at the time of engagement. Specifically, various determination processes as described below are continuously performed. .

  In FIG. 5, in the execution determination phase, it is first determined whether or not the electromagnetic brake 500 is off (that is, not engaged) and can be engaged (step S21). If both conditions are satisfied (step S21: YES), the process proceeds to the determination process after step S22. On the other hand, when any of the conditions is not satisfied (step S21: NO), the execution determination phase ends.

  In the subsequent determination process, it is determined whether or not the attraction current instruction value is stored in the second storage unit 170 (step S22). When the attraction current instruction value is stored (step S22: YES), the process proceeds to the determination process after step S23. On the other hand, when the attraction current instruction value is not stored (step S22: NO), the execution phase transition flag is turned on (step S27), and the execution determination phase ends.

  In the subsequent determination process, it is determined whether or not the value of the engagement number counter that counts the number of engagements of the electromagnetic brake 500 is equal to or greater than a threshold value (step S23). When the value of the engagement number counter is equal to or greater than the threshold (step S23: YES), the process proceeds to the determination process after step S24. On the other hand, when the value of the engagement number counter is not equal to or greater than the threshold value (step S23: NO), the execution determination phase ends.

  In the subsequent determination process, it is determined whether or not the operation of the electromagnetic brake 500 is the first operation after the abnormality flag is released (step S24). Here, the “abnormal flag” is a flag that is set when an abnormality is recognized in the operation of the electromagnetic brake 500. If the operation of the electromagnetic brake 500 is the first operation after the abnormality flag is released (step S24: YES), the process proceeds to a determination process after step S25. On the other hand, when the operation of the electromagnetic brake 500 is not the first operation after the abnormality flag is released (step S24: NO), the execution determination phase ends.

  In the subsequent determination process, it is determined whether or not the hybrid vehicle is immediately after an operation that may cause wear of the electromagnetic brake 500 (for example, a high-load operation) (step S25). If there is a possibility that the electromagnetic brake 500 is worn (step S25: YES), the process proceeds to the determination process of step S26. On the other hand, when there is no possibility that the electromagnetic brake 500 is worn (step S25: YES), the execution determination phase ends.

  In the subsequent determination process, it is determined whether or not there was a slip greater than a reference value when the electric brake 500 was locked last time (step S26). When the electric brake 500 has slipped beyond the reference value (step S26: YES), the execution phase transition flag is turned on (step S27), and the execution determination phase ends. On the other hand, when the electric brake 500 does not slip beyond the reference value (step S26: NO), the execution determination phase ends without the execution phase transition flag being turned on.

  Returning to FIG. 4, when the execution phase is completed, it is determined whether or not the execution phase transition flag is turned on (step S12). Here, when the implementation phase transition flag is turned on (step S12: YES), the current learning phase is performed (step S13). On the other hand, when the execution phase transition flag is not turned on (step S12: NO), the control process of the electromagnetic brake 500 by the control unit 100 ends.

  In FIG. 6, in the current learning phase, first, current supply from the current supply unit 110 is started (step S31). Subsequently, the current value of the current supplied from the current supply unit 110 to the electromagnetic brake 500 is increased by a constant value by the current value control unit 130 (step S32). Note that the current value is increased from the lowest possible value (for example, “zero” state). At this time, the torque capacity or the rotational speed of the electromagnetic brake 500 is detected by the detection unit 140.

  Subsequently, it is determined whether or not the detected torque capacity or rotation speed is greater than or equal to a threshold value (step S33). Here, when the torque capacity or the rotational speed is equal to or greater than the threshold value (step S33: YES), the current value at that time is stored as the suction start current value in the first storage unit 150 (step S34), and the current The learning phase ends. On the other hand, when the torque capacity or the rotational speed is not equal to or greater than the threshold value (step S33: NO), the processes of step S32 and step S33 are repeated. That is, the current is increased again by a certain value, and it is determined whether or not the detected torque capacity or rotational speed is greater than or equal to a threshold value.

  As described above, the current learning phase is repeatedly executed until the detected torque capacity or rotation speed becomes equal to or greater than the threshold value and the suction start current value is stored.

  Returning to FIG. 4, when the current learning phase ends, traveling is performed with the electromagnetic brake 500 turned on (step S <b> 14). At this time, the electromagnetic brake 500 is controlled by the engagement control unit 180 based on the suction start current value stored in the first storage unit 150. Since the suction start current location is a value determined based on a parameter related to the engagement of the electromagnetic brake 500, the engagement of the electromagnetic brake 500 can be reliably controlled.

  Subsequently, it is determined whether or not a release determination condition for the electromagnetic brake 500 is satisfied (step S15). Here, if the release determination condition for the electromagnetic brake 500 is not satisfied (step S15: NO), the traveling with the electromagnetic brake 500 kept on is continued. On the other hand, if the release determination condition for the electromagnetic brake 500 is satisfied (step S15: YES), the release control of the electromagnetic brake 500 is performed (step S16), and the vehicle travels with the electromagnetic brake 500 turned off. (Step S17).

  Subsequently, it is determined whether or not an engagement determination condition for the electromagnetic brake 500 is satisfied (step S18). Here, if the condition for determining the engagement of the electromagnetic brake 500 is not satisfied (step S18: NO), the traveling with the electromagnetic brake 500 turned off is continued. On the other hand, if the engagement determination condition for the electromagnetic brake 500 is satisfied (step S18: YES), the current verification phase is executed (step S19).

  In FIG. 7, in the current verification phase, first, current supply from the current supply unit 110 is started (step S41). Subsequently, the current value control unit 130 sets the current value of the current supplied from the current supply unit 110 to the electromagnetic brake 500 as the suction start current value (step S42). At this time, the torque capacity or the rotational speed of the electromagnetic brake 500 is detected by the detection unit 140.

  Subsequently, it is determined whether or not the detected torque capacity or rotational speed is greater than or equal to a threshold value (step S43). Here, when the torque capacity or the rotational speed is equal to or greater than the threshold value (step S43: YES), the suction start current value is stored in the second storage unit 170 as the suction current instruction value (step S34), and the current verification phase. Ends. On the other hand, when the torque capacity or the rotational speed is not greater than or equal to the threshold value (step S43: NO), the current value is increased by a certain value from the suction start current value, and the determination process of step S43 is repeated again.

  As described above, the current learning phase is repeatedly executed until the detected torque capacity or the rotational speed is equal to or greater than the threshold value and the suction current instruction value is stored.

  Returning to FIG. 4, when the current verification phase ends, the control process of the electromagnetic brake in the control unit 100 ends once. However, during the subsequent engagement operation of the electromagnetic brake 500, the suction current instruction value stored in the current verification phase is used. It is done. Since the suction current instruction value is a value determined by the test, the engagement of the engagement device can be controlled more reliably than in the case where the suction start current value is used. In addition, even if an accidentally incorrect current value (that is, a current value at which engagement cannot be accurately controlled) is stored as the suction start current value, an attraction current instruction value that can accurately control engagement. Can be learned as a new current value. Therefore, the engagement of the electromagnetic brake 500 can be controlled more reliably.

  Further, in the present embodiment, when the suction start current value and the suction current instruction value are obtained, the current value is gradually increased from a low state. Specifically, when obtaining the suction start current value, the current value is increased from zero, and when obtaining the suction current instruction value, the current value is raised from the suction start current value. For this reason, compared with the case where the current value is gradually decreased from a high state to obtain the suction start current value and the suction current instruction value, the power consumption can be greatly reduced.

  As described above, according to the control device for an engagement device according to the present embodiment, it is possible to more appropriately engage by appropriately responding to a change in current for the electromagnetic brake 500 that is the engagement device to be engaged. Can be controlled.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or concept of the invention that can be read from the claims and the entire specification. The control device is also included in the technical scope of the present invention.

  DESCRIPTION OF SYMBOLS 100 ... Control part, 110 ... Current supply part, 120 ... Determination part, 130 ... Current value control part, 140 ... Detection part, 150 ... 1st memory | storage part, 160 ... Test | inspection part, 170 ... 2nd memory | storage part, 180 ... Associate Combined control unit, 200 ... engine, 300 ... power split mechanism, 500 ... electromagnetic brake, 510 ... electromagnetic coil, 520 ... fixed body, 530 ... spline, 540 ... armature, 550 ... rotating body, MG1 ... motor generator, MG2 ... motor generator

Claims (7)

A control device for an engagement device in which engagement of an engagement portion is controlled by energization,
Current supply means for supplying a current for controlling engagement to the engagement device;
Determination means for determining whether or not the engagement device is in a predetermined state;
Learning means for performing control to learn a current value to be engaged by the engagement device when it is determined that the engagement device is in the predetermined state;
Engagement control means for controlling the engagement of the engagement device by controlling the current supply means so as to supply a current of the learned current value , and
The learning means includes
Current value control means for gradually increasing the current value of the current supplied by the current supply means from zero;
Detecting means for detecting a parameter relating to engagement in the engagement device when the current value is increased by the current value control means;
First storage means for storing, as a first current value, a current value when the parameter relating to the engagement becomes a predetermined value or more;
Have
The engagement control means controls the engagement of the engagement apparatus by controlling the current supply means so as to supply a current of the first current value. Control device. The learning means includes
After the first current value is stored in the first storage unit, the first current value is energized to test whether the parameter relating to the engagement is equal to or greater than the predetermined value. When,
The verification means further comprises second storage means for storing the first current value as a second current value when a parameter relating to the engagement is equal to or greater than the predetermined value.
The engagement control means controls the engagement of the engagement device by controlling the current supply means so as to supply a current of the second current value instead of the first current value. The control device for an engagement device according to claim 1 , wherein: The current value control means further increases the current value supplied to the engagement device in a stepwise manner from the first current value when the verification means determines that the parameter related to engagement does not exceed the predetermined value. Raise,
3. The control of the engagement device according to claim 2 , wherein the second storage unit stores a current value when a parameter related to the engagement becomes equal to or greater than the predetermined value as a second current value. 4. apparatus. Wherein the predetermined condition, the control device of the engaging device according to any one of claims 1 to 3, wherein the current engagement device is engaged by the learning means is a state of not being learned . Wherein the predetermined condition, the engagement of the engagement device control apparatus of the engaging device according to any one of claims 1 to 4, characterized in that the state of being performed a predetermined number of times or more. The control device for an engagement device according to any one of claims 1 to 5 , wherein the predetermined state is a state in which it is determined that the wear of the engagement portion is equal to or greater than a predetermined threshold. The predetermined state is a state in which a slip of a predetermined width or more has occurred in the electromagnetic brake when the engagement device is used as an electromagnetic brake that performs braking by engagement. The control device for an engagement device according to claim 6 .

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