JP2001270438A - Method and system for damping vibration of train - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and system for damping vibration of a train resulting from unevenness or deflection of a rail, etc. SOLUTION: An acceleration detector 1 detects the vibration of the axle of a leading vehicle 100, and this detected value is integrated by a conversion circuit 2 to be converted into displacement. The displacement is delayed for a predetermined time by a delaying device 3 and then inputted to a control means 5. The control means 5 converts the displacement into acceleration occurring at the axle of a following vehicle 110, then anticipates acceleration occurring at the vehicle body by use of transmission characteristic data (calculated by transmission characteristic calculating means 6) indicating the correlation between the acceleration of the axle and acceleration occurring at the vehicle body, and applies to the vehicle 110 a force to cancel out the acceleration.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a system for suppressing vibration of a train.

[0002]

2. Description of the Related Art Rails on which trains travel have some irregularities or distortions. Therefore, the train vibrates when passing through the uneven portion or the distorted portion.

[0003]

However, heretofore, there has been no method for suppressing this vibration. An object of the present invention is to provide a vibration damping method and a vibration damping system for suppressing vibration generated in a train due to unevenness or distortion of a rail or the like.

[0004]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 includes a plurality of vehicles (100, 11).
0) is a vibration suppression method for suppressing the vibration of the connected train, which detects the vibration of the preceding vehicle (100), predicts the time when the following vehicle (110) passes the point where the vibration has occurred, and The vibration generated at the time of the passage is predicted by using the vibration of the preceding vehicle, and a force for canceling the predicted vibration is applied to the following vehicle at the predicted time to suppress the vibration.

[0005] Since almost the same vibration is generated in all vehicles when passing through the same point, vibration generated in a succeeding vehicle at a certain point can be predicted using vibration of a preceding vehicle at a certain point. Therefore, according to the first aspect of the present invention,
Predict the time at which vibration will occur in the following vehicle and its vibration,
Since the force for canceling the predicted vibration is added to the predicted time, the vibration of the following vehicle can be actively suppressed. Here, assuming that the leading vehicle is the leading vehicle, the leading vehicle is often not a passenger car, so that a greater effect is obtained. Here, the target vibration may be only vertical vibration or horizontal vibration, or both of them.

According to a second aspect of the present invention, in the method for damping a train according to the first aspect, the vibration of the axle of the preceding vehicle is detected by a displacement, and the displacement is predicted as the displacement occurring on the axle of the following vehicle. Then, a correlation between the vibration generated on the axle of the following vehicle and the vibration generated on the vehicle body is grasped, and the vibration generated on the vehicle body of the following vehicle is predicted using the correlation and the predicted displacement of the axle. It is characterized by the following.

[0007] The vibration generated when passing through the same point is
Although the amplitude, that is, the displacement is the same for all the axles of the vehicle, the acceleration of the vehicle body, which is a physical quantity perceived as vibration by a person, differs at the same point depending on the loaded weight and speed of the vehicle. On the other hand, according to the second aspect of the present invention, the displacement of the axle of the preceding vehicle is detected, and the correlation between the vibration generated on the axle of the following vehicle and the vibration generated on the vehicle body is always grasped. Since the vibration generated in the vehicle body of the following vehicle is predicted using the predicted value of the displacement of the axle, the vibration of the following vehicle can be suppressed more effectively.

According to a third aspect of the present invention, there is provided a vibration damping system for a train, which is attached to a preceding vehicle (100).
Vibration detection means (for example, acceleration detector 1) for detecting the vibration of the vehicle, transit time prediction means (for example, delay device 3) for predicting the time when the following vehicle passes the vibration generation point where the vibration has occurred, Using a force applying means (for example, a hydraulic actuator 4) for applying a force to the following vehicle and the vibration detected by the vibration detecting means, a vibration to be generated in the following vehicle at the vibration generating point is predicted. Control means (5) for controlling the force means so as to apply a force for canceling the predicted vibration to the following vehicle.

According to the third aspect of the present invention, it is possible to provide a system for suppressing the vibration of the vehicle by the method according to the first aspect.

According to a fourth aspect of the present invention, in the train vibration damping system according to the third aspect, an acceleration detector (1) attached to an axle of the leading vehicle as the vibration detecting means; A conversion means (for example, a conversion circuit 2) for integrating the detected value twice and converting it into a displacement; transmission characteristic data which is a correlation between an acceleration of vibration generated on the axle of the following vehicle and an acceleration generated on the body of the following vehicle. The control means controls the force applying means by predicting the acceleration of vibration occurring in the following vehicle from the output of the conversion means and the transfer characteristic calculating means. It is characterized by doing.

According to the fourth aspect of the present invention, it is possible to provide a system for suppressing vehicle vibration by the method according to the second aspect.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, the configuration will be described. FIG.
As shown in FIG. 1, the vibration damping system according to the present embodiment includes an acceleration detector 1 attached to the axle of the front wheel 101 of the leading vehicle 100 and a detection result of the acceleration
A well-known conversion circuit 2 for converting the integral into a displacement of the axle
And a delay device 3 for delaying the output of the conversion circuit 2 for a predetermined time.
And a known hydraulic actuator 4 (force applying means) attached to each subsequent vehicle 110 for each suspension device 111 and applying a force to the vehicle body of the vehicle 110, and controlling the hydraulic actuator 4 using an output from the delay device 3. Suspension system 11
And control means 5 for controlling the swing of the vehicle 110 on the vehicle 1. Here, the delay device 3 and the control means 5 are provided for each suspension device 111. Also, three hydraulic actuators 4 are attached to each suspension device 111. One is attached so as to apply a lateral force to the vehicle body, and the other two are attached so as to apply a vertical force to the left and right sides of the vehicle one by one.

The acceleration detector 1 is a well-known acceleration detector, and constantly detects and outputs lateral and vertical acceleration generated on the wheel 101 and its axle during traveling. This acceleration is generated according to the unevenness and distortion of the rail.

The delay device 3 knows in advance the distance between the earliest axle of the vehicle 100 and each suspension device 111 of each vehicle 110, and always divides this distance by the speed of the train during traveling to obtain a delay time. Is calculated, and the output of the conversion circuit 2 is delayed by the delay time.

The control means 5 includes a transfer characteristic calculating means 6 for calculating transfer characteristic data (details will be described later), and a hydraulic actuator 4 according to the output from the delay device 3 and the transfer characteristic data calculated by the transfer characteristic calculating means 6. And a control circuit 7 for controlling the The transfer characteristic data is a coefficient indicating a relationship between the acceleration generated on the wheels and the acceleration generated on the vehicle body,
It is a variable that changes depending on the number of passengers, the speed of the vehicle, and the like. The transmission characteristic calculating means 6 includes an acceleration detector 61 attached to the axle corresponding to each hydraulic actuator 4 and the suspension device 111, and an acceleration detector 62 attached to the vehicle body.
And an arithmetic circuit 63 for comparing and calculating the detection values of the acceleration detector 61 and the acceleration detector 62 to calculate the transfer characteristic data of each vehicle 110. The control circuit 7 predicts and calculates the acceleration generated in the axle from the displacement of the axle which is the output of the conversion circuit 2, and predicts and calculates the acceleration expected to be generated in the vehicle body from this value and the transfer characteristic data. Each hydraulic actuator 4 is controlled so as to cancel the calculated acceleration of the vehicle body. The control means 5 also operates at all times during traveling.

Next, the operation of the vibration damping system will be described.

While the train is running, the acceleration detector 1 detects the acceleration generated at the earliest axle of the vehicle 100 according to the unevenness and distortion of the rail and outputs the acceleration to the conversion circuit 2. Then, the conversion circuit 2 converts the output of the acceleration detector 1 into the displacement of the axle and outputs it to the delay device 3. This displacement is applied to all vehicles 100 and 110 when traveling at the same point.
Are common values for the axles. Further, the delay device 3 always calculates the delay time from the speed at that moment, and delays and outputs the output of the conversion circuit 2 according to the moment.

The transmission characteristic calculating means 6 of the control means 5
Calculates the transfer characteristic data in parallel with the operations of the acceleration detector 1 and the conversion circuit 2.

The control circuit 7 of the control means 5 transmits the transfer characteristic data calculated by the transfer characteristic
Each hydraulic actuator 4 is controlled using the displacement from the conversion circuit 2 via the delay device 3 to suppress the vibration of the vehicle 110.

Therefore, according to the present vibration damping system, the displacement from the conversion circuit 2 is delayed by an appropriate time by the operation of the delay device 3 and is input to the control means 5, so that the displacement is recognized by the passage of the earliest wheel. The control means 5 activates each hydraulic actuator 4 in accordance with the unevenness and distortion of the rails.
, And the vibration generated in the vehicle body can be greatly suppressed. In particular, the transfer characteristic calculation means 6 calculates transfer characteristic data at each point in time, and estimates the acceleration based on the transfer characteristic data and a displacement having a common value for all axles. Even if it changes, the acceleration can be accurately predicted and the vibration can be suppressed.

In the above-described embodiment, the acceleration detector 1 is mounted on the vehicle 100. However, the present invention is not limited to this. It is good also as a structure which suppresses the vibration of. Further, one train may be divided into a plurality of sets of vehicles, and the vibration suppression system may be mounted on each set. In addition, it goes without saying that specific components can be appropriately changed.

[0022]

According to the first aspect of the present invention, the vibration of the following vehicle can be predicted and the vibration can be suppressed actively. According to the second aspect of the present invention, since the vibration of the following vehicle can be more accurately predicted, the vibration of the following vehicle can be further suppressed.

According to the third aspect of the present invention, it is possible to provide a system for suppressing vehicle vibration by the method according to the first aspect. Further, according to the invention described in claim 4, it is possible to provide a system for suppressing the vibration of the vehicle by the method described in claim 2.

[Brief description of the drawings]

FIG. 1 is a block diagram of a vibration damping system according to an embodiment of the present invention.

FIG. 2 is a block diagram of control means of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Acceleration detector (vibration detection means) 2 Conversion circuit (conversion means) 3 Delay device (passing time prediction means) 4 Hydraulic actuator (loading means) 5 Control means 6 Transmission characteristic calculation means

Claims (4)

[Claims] 1. A vibration damping method for suppressing a vibration of a train to which a plurality of vehicles are connected, detecting a vibration of a preceding vehicle, estimating a time when a following vehicle passes a point where the vibration occurs, and A vibration generated at the time of the passage is predicted by using the vibration of the preceding vehicle, and a force for canceling the predicted vibration is applied to the following vehicle at the predicted time to suppress the vibration, thereby suppressing the vibration. Damping method. 2. A vibration of the axle of the preceding vehicle is detected as a displacement, and the displacement is predicted as a displacement of the axle of the succeeding vehicle. The vibration of the axle of the following vehicle and the vibration of the vehicle body are detected. 2. The method according to claim 1, further comprising: grasping a correlation of the train, and predicting a vibration generated in a vehicle body of the following vehicle using the correlation and the predicted displacement of the axle. 3. A vibration detecting means attached to a preceding vehicle and detecting a vibration of the vehicle; a passing time predicting means for predicting a time when a following vehicle passes a vibration generating point where the vibration occurs; A force applying means for applying a force, and using the vibration detected by the vibration detection means, to predict the vibration generated in the following vehicle at the vibration generation point,
Control means for controlling the applying means so as to apply a force for canceling the predicted vibration to the following vehicle at the predicted time. 4. An acceleration detector mounted on the axle of the leading vehicle as the vibration detecting means, a converting means for integrating a detection value of the acceleration detector twice to convert the detected value into a displacement, and an axle of the following vehicle. And a transfer characteristic calculating unit that calculates transfer characteristic data that is a correlation between the acceleration of the vibration that occurs in the vehicle body and the acceleration that occurs in the vehicle body of the following vehicle. The control unit includes: 4. The control device according to claim 3, wherein an acceleration of vibration generated in the following vehicle is predicted from an output to control the force applying means.
The mentioned train damping system.