JP6933968B2 - A vehicle having a regulated wind speed determination method, a regulated speed determination method, and a regulated speed determination means for the vehicle. - Google Patents

Description

The present invention relates to a vehicle having a regulated wind speed determining method, a regulated speed determining method, and a regulated speed determining means of the vehicle. More specifically, for vehicles such as railroad vehicles, regulations for determining the stopping or slowing of traveling in consideration of the safe operation of the vehicle in strong winds, the method for determining the wind speed, and the regulations for safe driving. The present invention relates to a method for determining a speed and a vehicle having such a regulated speed determining means.

Conventionally, various methods for managing vehicle operation in strong winds have been developed in order to operate the vehicle safely. For example, as disclosed in Patent Documents 1 and 2, the applicant of the present application has also made the development in the past.

Japanese Patent No. 4837623 Japanese Unexamined Patent Publication No. 2008-275568

In the conventional operation management method including the above-mentioned Patent Documents 1 and 2, a wind speed meter is installed in the vicinity of the place where the vehicle travels, the wind speed is measured at a fixed point by the wind speed meter, and as shown in FIG. When the wind speed is reached (for example, wind speed 25 m / s), the vehicle is slowed down at a predetermined speed (for example, running speed 25 km / h), and when the wind speed is further increased (for example, wind speed 30 m / s), the vehicle is stopped. The operation management method of letting them do was adopted.

Such an operation management method does not cause any problem in the safe operation of the vehicle, but the above-mentioned operation regulation has a regulated wind speed value set based on the experience of accidents that occurred in the past, and is used as a wind regulation. On the other hand, no quantitative study has been made as to how much the safety margin is compared with the overturning limit wind speed, which indicates that the vehicle may overturn. Similarly, the running speed for the regulated wind speed value is not set in consideration of safety margin because it is determined from past experience how much the running speed should be reduced to slow down. .. Therefore, there is a possibility that an excessive safety margin is expected and stable transportation of the vehicle is hindered.

In recent years, vehicles have been reduced in weight from the viewpoints of environmental problems such as noise and vibration and energy saving, and in addition, the speed has been increased due to the improvement of convenience. Weight reduction and speeding up of vehicles are disadvantageous conditions for overturning of vehicles due to strong winds. Therefore, for vehicles with such weight reduction and speeding up, the driving safety of vehicles against strong winds is accurately improved. Evaluation is becoming important.

Therefore, the present invention has been made in view of the above problems, and it is possible to safely and stably operate the vehicle by using an index for evaluating the safety against strong wind in determining the regulated wind speed and the regulated speed of the vehicle. It is an object of the present invention to provide a vehicle having a regulated wind speed determination method, a regulated speed determination method, and a regulated speed determination means of a vehicle capable of determining the speed.

The vehicle regulation wind speed determination method according to the present invention for solving the above problems includes a first step of determining or measuring the wind speed, a second step of determining or measuring the traveling speed, conditions of a traveling area, and a type of vehicle. A calculation step of calculating the minimum overturning limit wind speed from the above is provided, and the regulated wind speed is determined so that the wind speed and the traveling speed do not exceed the minimum overturning limit wind speed in the relationship between the wind speed and the traveling speed. The regulated wind speed is characterized in that it is determined in multiple stages according to the arbitrary traveling speed.

Further, in the method for determining the regulated wind speed of a vehicle according to the present invention, it is preferable that the wind speed is measured by an anemometer attached to the vehicle.

Further, in the method for determining the regulated wind speed of a vehicle according to the present invention, the regulated wind speed can have an area obtained by integrating the distribution of the difference between the minimum overturning limit wind speed and the regulated wind speed in the relationship between the traveling speed and the wind speed. It is preferable that it is determined to be small.

Further, in the method for determining the regulated wind speed of a vehicle according to the present invention, it is preferable that the regulated wind speed is determined so that the difference from the minimum overturning limit wind speed at an arbitrary traveling speed is as small as possible.

Further, in the method for determining the regulated wind speed of a vehicle according to the present invention, the calculation step calculates a plurality of minimum overturning limit wind speeds by classifying the conditions of the traveling area and the type of the vehicle, and the plurality of minimum overturning limit wind speeds. Of these, it is preferable to include a superimposition step of superimposing at least two or more calculation results.

Further, the method for determining the regulated speed of the vehicle according to the present invention includes a first step of determining or measuring the wind speed, a second step of determining or measuring the traveling speed, and a minimum overturning limit wind speed based on the conditions of the traveling area and the type of vehicle. The regulated wind speed is determined so that the wind speed does not exceed the minimum overturning limit wind speed in the relationship between the wind speed and the traveling speed, and the regulated wind speed is an arbitrary traveling speed. It is characterized in that it is determined in multiple stages according to the situation.

Further, in the vehicle according to the present invention, the first means for measuring the wind speed, the second means for measuring the traveling speed, the third means for specifying the current traveling position, the conditions of the traveling area currently traveling, and the conditions of the traveling area where the vehicle is currently traveling A calculation means for calculating the minimum overturning limit wind speed from the type of vehicle is provided, and the regulated speed is determined so that the wind speed does not exceed the minimum overturning limit wind speed in the relationship between the wind speed and the traveling speed. The wind speed is characterized by providing a traveling speed determining means that is determined in multiple stages according to the arbitrary traveling speed.

According to the vehicle having the regulated wind speed determining method, the regulated speed determining method, and the regulated speed determining means of the vehicle according to the present invention, the wind speed and the traveling speed at any time of the vehicle do not exceed the pre-calculated minimum overturning limit wind speed. Since the regulated wind speed is determined in this way, stable transportation can be carried out with due consideration of safety margins.

Further, according to the method for determining the regulated wind speed of a vehicle according to the present invention, since the wind speed is measured by an anemometer attached to the vehicle, the regulated wind speed can be determined more accurately by measuring the actual wind speed received by the vehicle. Can contribute to the stable and safe transportation of vehicles.

Further, according to the method for determining the regulated wind speed of a vehicle according to the present invention, the regulated wind speed is such that the area obtained by integrating the distribution of the difference between the minimum overturn limit wind speed and the regulated wind speed is as small as possible in the relationship between the traveling speed and the wind speed. Therefore, it is possible to quantitatively evaluate the regulated wind speed.

Further, according to the method for determining the regulated wind speed of a vehicle according to the present invention, the regulated wind speed is determined so that the difference from the minimum overturning limit wind speed at an arbitrary traveling speed is as small as possible. It can be performed.

Further, according to the method for determining the regulated wind speed of a vehicle according to the present invention, the regulated wind speed is determined in multiple stages according to an arbitrary traveling speed, so that the regulated wind speed has a safety margin with respect to the minimum overturn limit wind speed. Since the regulated wind speed value can be determined while quantitatively confirming the existence, the traveling speed can be determined while quantitatively examining the safety margin.

The figure for demonstrating an example of the situation at the time of carrying out the regulation wind speed and regulation speed determination method of the vehicle which concerns on this embodiment. The flow chart of the regulated wind speed and the regulated speed determination method of the vehicle which concerns on this embodiment. Flow diagram of the calculation process. The figure for demonstrating the wind direction angle of the natural wind which a vehicle receives. A graph showing an example of the relationship between the wind direction angle of natural wind and the overturning limit wind speed. The graph which shows an example of the relationship between the traveling speed and the minimum overturning limit wind speed. The figure which shows the determination method of the regulated wind speed. The figure which shows an example when the three-step wind regulation is set. The figure which shows an example when the stepless wind regulation is set. The figure which shows the application example of the regulated wind speed and the regulated speed determination method of the vehicle which concerns on this embodiment. The figure for demonstrating the conventional wind regulation.

Hereinafter, the regulated wind speed and the regulated speed determination method of the vehicle according to the embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a diagram for explaining an example of a situation when the regulated wind speed and the regulated speed determination method of the vehicle according to the present embodiment are implemented, and FIG. 2 is a diagram for explaining the regulated wind speed and the regulation of the vehicle according to the present embodiment. FIG. 3 is a flow chart of a speed determination method, FIG. 3 is a flow chart of a calculation process, FIG. 4 is a diagram for explaining a wind direction angle of a natural wind received by a vehicle, and FIG. 5 is a diagram of a natural wind wind direction. FIG. 6 is a graph showing an example of the relationship between the angle and the overturning limit wind speed, FIG. 6 is a graph showing an example of the relationship between the traveling speed and the minimum overturning limit wind speed, and FIG. 7 is a diagram showing a method of determining the regulated wind speed. , FIG. 8 is a diagram showing an example when a three-stage wind regulation is set, FIG. 9 is a diagram showing an example when a stepless wind regulation is set, and FIG. 10 is a diagram showing an example when the stepless wind regulation is set. It is a figure which shows the application example of the regulation wind speed of a vehicle, and the regulation speed determination method.

As shown in FIG. 1, the method for determining the regulated wind speed and the regulated speed of the vehicle according to the present embodiment is, for example, when determining the speed of a railway vehicle traveling from the starting point A station to the destination point B station. Used. Next, as shown in FIG. 2, the wind speed and running speed are measured or determined (first step and second step), and the minimum overturn limit wind speed according to the alignment of the structure and the orbit is calculated (calculation step). .. The minimum overturn limit wind speed is the smallest wind speed value that may cause the vehicle to overturn because the wheels on the wind side rise from the rail when the vehicle receives a crosswind. Specifically, the crosswind is applied to the vehicle. When such actions act, the wheel load on the wind side begins to decrease, and when a certain wind speed is reached, the wind speed when the wheel load on the wind side becomes zero. The method for determining the regulated wind speed of a vehicle according to the present embodiment is not limited to being used in the situation shown in FIG. 1, and can be applied to vehicles other than railway vehicles, such as automobiles. be.

As shown in FIG. 2, in the method for determining the regulated wind speed and the regulated speed of the vehicle according to the present embodiment, the wind speed received by the vehicle is measured by a wind speed meter attached to the vehicle, or a preset wind speed is determined. A first step (S101), a second step (S102) for measuring the running speed of the vehicle or determining a preset running speed, and a calculation step (S103) for calculating the minimum overturn limit wind speed are provided. It is provided with a step (S104) of determining the regulated wind speed or the regulated speed so that these wind speed values and traveling speeds do not exceed the pre-calculated minimum overturning limit wind speed.

The overturn limit wind speed can be obtained from the structure around an arbitrary point, the alignment of the track at that point, and the shape of the traveling vehicle. Therefore, as shown in FIG. 1, it is preferable to divide the section from A station to B station according to the type of structure and the alignment of the orbit, and calculate the minimum overturn limit wind speed in each section. As shown in FIG. 3, in the calculation step (S103), the third step (S105) of determining or measuring the position of the vehicle, the alignment of the surrounding structures and tracks at the position, and the type of the traveling vehicle are determined. It includes a step of specifying (S106) and a step of calculating the minimum overturning limit wind speed from the types of structures, alignments and vehicles (S107). As for the specific calculation method of the capsizing limit wind speed, the risk factor of capsizing is obtained from the balance of the moments around the contact points of the wheels and the track due to the external force acting on the vehicle, and the detailed calculation is performed by various calculation methods. Can be calculated by.

To elaborate on the minimum overturning limit wind speed, the minimum overturning limit wind speed is the minimum value of the wind speed that may start overturning in the relationship between the wind direction angle at a certain traveling speed and the overturning limit wind speed. As shown in 4, the relationship between the minimum overturning limit wind speed and the traveling speed is obtained by using the relationship between the wind direction angle α of the natural wind received by the vehicle 10 and the overturning limit wind speed. As shown in FIG. 5, the overturning limit wind speed can be obtained from the relationship between the wind direction angle of the natural wind and the overturning limit wind speed for each traveling speed according to the structure and alignment of the traveling section and the shape of the traveling vehicle. .. Specifically, as shown in FIG. 4, the angle formed by the traveling direction of the railroad vehicle is defined as the wind direction angle α of the natural wind, and when the natural wind is received at this wind direction angle α, the vehicle moves with respect to each traveling speed. The wind speed w (m / s) for overturning (the wheel load on the wind side becomes zero) is calculated.

Next, in the relationship between the wind direction angle and the overturning limit wind speed at a certain traveling speed, the minimum overturning limit wind speed is obtained as the minimum overturning limit wind speed at the traveling speed, and the relationship between the traveling speed and the minimum overturning limit wind speed is obtained. FIG. 6 is a plot of the wind speed value of the overturning limit wind speed, which is the minimum at the traveling speed among the traveling speeds calculated in FIG. 5, as the minimum overturning limit wind speed w.

Next, a method for determining the regulated wind speed and the regulated speed will be described. As shown in FIG. 7, in the method for determining the regulated wind speed of the vehicle according to the present embodiment, a graph having the wind speed on the horizontal axis and the traveling speed on the vertical axis is used, and the minimum overturn limit wind speed Wc obtained by the above method is graphed. Plot to.

At this time, if the wind speed exceeds the minimum overturning limit wind speed Wc at an arbitrary traveling speed, the vehicle may overturn. Therefore, the wind speed should not exceed the minimum overturning limit wind speed Wc at an arbitrary traveling speed. By determining the regulated wind speed Wr and the regulated speed, it is possible to realize safe vehicle operation.

As for the wind speed measurement method, as described above, the wind speed and running speed acting on the vehicle are determined in advance to calculate the overturn limit wind speed, and the anemometer or speedometer installed in the vehicle or running section is used. The regulated wind speed and the regulated speed may be determined in real time according to the traveling of the vehicle using the obtained wind speed and speed. In this case, the measuring means is not particularly limited, and various conventionally known wind speed measuring means can be adopted. Specifically, an anemometer (for example, a three-cup anemometer or a propeller type anemometer) can be adopted. , Anemometer) or the like, or the wind speed may be measured surface-wise by remote sensing (for example, Doppler radar, Doppler lidar). These wind speed measuring means may be installed on the ground or may be installed in a moving vehicle. The timing of measuring the wind speed is not particularly limited, and the measurement may be performed on a moving vehicle at all times. You may measure. The anemometer is more suitable because when installed in a vehicle, the wind regulation can be evaluated based on the wind speed actually received by the vehicle.

Further, the measuring method is not particularly limited in the measurement of the traveling speed, and various conventionally known traveling speed measuring means can be adopted. Further, the timing of measuring the traveling speed is not particularly limited, and the measurement may be performed constantly on the moving vehicle, and the traveling speed measuring means on the ground may be used at predetermined intervals, for example, every second. Etc. may be measured regularly.

Further, in the method of determining the regulated wind speed Wr, since the difference between the minimum overturning limit wind speed Wc and the regulated wind speed Wr is a safety margin, the area obtained by integrating the distribution of the difference between the minimum overturning limit wind speed Wc and the regulated wind speed Wr. S can be defined as a safety margin, and if this safety margin is large, it is sufficiently safe, but if an excessive safety margin is expected, wind regulation is frequently issued and it can be quantitatively grasped that stable transportation is hindered. .. That is, by appropriately setting the safety margin, it is possible to quantitatively set the safe traveling speed without hindering stable transportation.

Further, the safety margin is evaluated from the area S obtained by integrating the distribution of the difference between the minimum overturning limit wind speed Wc and the regulated wind speed Wr, and the difference between the minimum overturning limit wind speed Wc and the regulated wind speed Wr at an arbitrary traveling speed (FIG. 7). It can also be obtained from the distance on the horizontal axis in.

As shown in FIG. 8, for example, the wind regulation determined in this way is preferably set in multiple stages so as not to exceed the minimum overturn limit wind speed Wc. Specifically, when the wind speed exceeds 25 m / s, the traveling speed is reduced to 70 km / h, and when the wind speed exceeds 30 m / s, the traveling speed is slowed down to 20 km / h. , It is possible to realize wind regulation such as stopping the vehicle when the wind speed exceeds 35 m / s.

Further, as shown in FIG. 9, it is also possible to set the wind regulation steplessly along the slope of the minimum overturn limit wind speed Wc. In this case, when the observed wind speed is 35 m / s, the traveling speed is set to 20 km / h, and it is possible to minimize the safety margin and realize safe and stable vehicle operation.

According to the vehicle regulation wind speed determination method according to the present embodiment, unlike the conventional method, the wind speed and the traveling speed are determined so as not to exceed the minimum overturning limit wind speed in the relationship between the current wind speed and the traveling speed. Therefore, it is possible to quantitatively evaluate the wind regulation, and it is possible to realize stable transportation with a safety margin in mind.

Next, a specific application example of the regulated wind speed and the method for determining the regulated speed according to the present embodiment will be described with reference to FIG. First, as shown in FIG. 10A, this application example describes a case where sections 1 to 7 in FIG. 1 are applied when the vehicle a and the vehicle b are traveling. Here, for each of the sections 1 to 7, for the vehicle a and the vehicle b, the minimum overturning limit wind speeds c1a to Wc7a and the minimum overturning limit wind speeds c1a to Wc7a are used by using the first step (S101), the second step (S102) and the calculation step (S103) described above. Wc1b to Wc7b are calculated.

Then, the regulated wind speeds Wr1a to Wr7a and Wr1b to Wr7b most suitable for the calculated minimum overturn limit wind speeds Wc1a to Wc7a and Wc1b to Wc7b are determined.

In this way, by setting the regulated wind speed according to the traveling vehicle and section, the safety margin is appropriately set, and it is possible to quantitatively set the safe traveling speed without hindering stable transportation. .. However, when the regulated wind speed is determined according to the section and the vehicle, the operation of the regulated wind speed may become extremely complicated. In this case, for example, if the regulated wind speed is set for each arbitrary item, more concise operation can be performed.

Specifically, as shown in FIG. 10B, a method of determining the regulated wind speed for the vehicle can be adopted. This obtains the envelope superimposed by the overlay step of superimposing the minimum overturn limit wind speeds Wc1a to Wc7a corresponding to the sections 1 to 7 calculated in FIG. 10A, and sets the regulated wind speed for the envelope. doing.

By setting the regulated wind speed in this way, the regulated wind speed can be set for each vehicle traveling in the section, so that it is possible to carry out stable transportation that is simple and has a sufficient safety margin.

Further, as shown in FIG. 10 (c), the regulated wind speed may be determined for each section. According to this application method, the regulated wind speed can be applied regardless of the type of the traveling vehicle, so that it is possible to carry out stable transportation that is simpler and has a sufficient safety margin.

Further, as shown in FIG. 10D, the regulated wind speed Wr may be determined for the envelope obtained by superimposing all the minimum overturning limit wind speeds in the target section. In this case, since the regulated wind speed can be uniformly applied regardless of the traveling vehicle or the traveling section, it is possible to carry out stable transportation that is more concise and has a sufficient safety margin.

In the method for determining the regulated wind speed of the vehicle according to the present embodiment, the method of setting the regulated wind speed with respect to the minimum overturning limit wind speed has been described, but the regulated wind speed is set first and the minimum overturning limit wind speed is the regulated wind speed. It may be used for evaluating the safety of the vehicle as to whether or not it exceeds the above, and it is also possible to design or select the vehicle so that the minimum overturn limit wind speed exceeds the regulated wind speed. Further, in the method for determining the regulated wind speed and the regulated speed of the vehicle according to the present embodiment, the regulated wind speed and the regulated speed are determined using the minimum overturning limit wind speed, but the same reference wind speed is used instead of the minimum overturning limit wind speed. This is also included in the scope of the present invention. Further, the method for determining the regulated wind speed of the vehicle according to the present embodiment has been described in the case of using a graph in which the horizontal axis is the wind speed and the vertical axis is the traveling speed. You may use it. It is clear from the description of the claims that the form with such changes or improvements may be included in the technical scope of the present invention.

10 Vehicle, α wind direction angle, Wr regulated wind speed, Wc minimum overturn limit wind speed.

Claims (7)

The first step of determining or measuring the wind speed,
The second step of determining or measuring the running speed,
It is equipped with a calculation process that calculates the minimum overturning limit wind speed from the conditions of the driving area and the type of vehicle.
In the relationship between the wind speed and the traveling speed, the regulated wind speed is determined so that the wind speed and the traveling speed do not exceed the minimum overturning limit wind speed.
A method for determining a regulated wind speed of a vehicle, wherein the regulated wind speed is determined in multiple stages according to an arbitrary traveling speed. In the method for determining the regulated wind speed of a vehicle according to claim 1,
A method for determining a regulated wind speed of a vehicle, wherein the wind speed is measured by an anemometer attached to the vehicle. In the method for determining the regulated wind speed of a vehicle according to claim 1 or 2.
The regulated wind speed is determined so that the area obtained by integrating the distribution of the difference between the minimum overturning limit wind speed and the regulated wind speed is as small as possible in the relationship between the traveling speed and the wind speed. How to determine the regulated wind speed. In the method for determining the regulated wind speed of a vehicle according to claim 1 or 2.
A method for determining a regulated wind speed of a vehicle, wherein the regulated wind speed is determined so that the difference from the minimum overturning limit wind speed at an arbitrary traveling speed is as small as possible. In the method for determining the regulated wind speed of a vehicle according to claim 1,
The calculation step is a superposition step in which a plurality of minimum overturning limit wind speeds are calculated according to the conditions of the traveling area and the type of the vehicle, and at least two or more calculation results among the plurality of minimum overturning limit wind speeds are superimposed. A method for determining a regulated wind speed of a vehicle, which comprises. The first step of determining or measuring the wind speed,
The second step of determining or measuring the running speed,
It is equipped with a calculation process that calculates the minimum overturning limit wind speed from the conditions of the driving area and the type of vehicle.
In the relationship between the wind speed and the traveling speed, the regulated speed is determined so that the wind speed does not exceed the minimum overturning limit wind speed.
A method for determining a regulated speed of a vehicle, wherein the regulated wind speed is determined in multiple stages according to an arbitrary traveling speed. The first means of measuring wind speed and
The second means of measuring the running speed and
A third means of identifying the current running position and
It is equipped with a calculation means for calculating the minimum overturning limit wind speed from the conditions of the currently traveling area and the type of vehicle.
In the running speed of the relationship between the wind speed, the wind speed, Bei give a traveling speed determining means for determining the speed limit so as not to exceed the minimum overturning limit wind speed,
The vehicle is characterized in that the regulated wind speed is determined in multiple stages according to the arbitrary traveling speed.

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