Active control system for dynamic behaviors of high-speed train

Abstract

The invention relates to the field of vibration control, in particular to an active control system for dynamic behaviors of a high-speed train. The active control system comprises a sensor, a controller and a control device; the sensor is installed on the controlled train, the control device comprises a base, a driving motor, an encoder, a transmission and a quality disc, the base is fixed to thecontrolled train, the driving motor is fixed to the base, the encoder is coaxially fixed to the bottom of the driving motor, the transmission is arranged at the top of the driving motor, and a rotaryshaft of the driving motor is fixedly connected with the quality disc; the controller is electrically connected with the driving motor, the sensor and the encoder. According to the active control system, the active control technology is applied, full play is given to the effect of output torque of the system, so that the output torque can directly act on the train body, the system can be adjustedto control algorithms and achieve different control effects according to actual demands, and the vibration control over compartments of the train is achieved.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to an active control system for dynamic behavior of high-speed trains. Background technique [0002] As the area covered by the high-speed railway becomes wider and wider, the speed of the vehicle becomes faster and faster, and the dynamic force between the various parts of the vehicle and the wheel-rail intensifies, and the dynamic problems caused by this become more significant. Therefore, the research on vehicle dynamics is carried out. Research is particularly important. [0003] When the train is running at high speed, it is affected by the following factors: ① cracks and sundries on the track and uneven settlement of the rail foundation; ② long-term wear of the bottom rollers; ③ lateral wind pressure when the train enters the tunnel ; ④ The train is affected by the uneven distribution of the height of the rails at both ends at the turn. Based on the influence of the above fa...

AI Technical Summary

Problems solved by technology

[0006] First, the existing suspension system only considers the directions of vertical and lateral forces, and its force direction is also limited to two linear directions

However, in reality, the dynamic response of the train will produce a rotational movement similar to rolling, shaking, and nodding. Only relying on the linear force provided by the suspension system cannot form the most effective control force. This makes the existing suspension The control function of the system cannot be fully exerted, resulting in the unfavorable dynamic response of the train cannot be fully suppressed

[0007] Second, a large number of tests and studies have shown that the control force characteristics of the suspension system under the action of two linear forces present a strong nonlinearity, and the control effects on the train are different for different excitation frequencies, and even in a certain Under the excitation frequency, instead of achieving the control effect, the suspension system will amplify the response of the system, fail to produce the expected control torque, and cannot exert direct and effective control.

[0008] The above deficiencies lead to the fact that the existing train vibration control devices cannot well solve the problems of random vibration of the carriage, and the existing vibration control devices cannot meet the vibration control requirements of the complex environment during the high-speed running of the train.

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