A rail vehicle serpentine instability suppression system and method

Abstract

A rail vehicle serpentine instability suppression system and method, including a serpentine early warning and control module for judging whether the bogie is in a serpentine instability state; a traction motor speed control system for The judgment of the module controls the speed of the traction motor; the signal output end of the serpentine early warning and control module is connected to the speed control system of the traction motor. The present invention extracts the serpentine motion characteristic wave according to the bogie lateral acceleration, and calculates the vibration nonlinear index according to the extracted serpentine nonlinear characteristics to judge whether the bogie is in the serpentine instability state, and directly transfers the traction system through the DTC control module. The existing train lateral control can only reduce the lateral vibration of the train, but cannot eliminate the serpentine instability, while the present invention can control the traction motor, thereby reducing the speed and eliminating the serpentine instability.

Description

technical field [0001] The invention relates to a suppression system and method, in particular to a rail vehicle serpentine instability suppression system and method. Background technique [0002] Train safety is the primary consideration for train operation, so domestic and foreign manufacturers have designed different monitoring systems and equipment to monitor the train operating status. These detection systems and equipment widely use accelerometers and strain gauges to monitor key parts, including the monitoring of train safety indicators and stability indicators. However, at present, there is no national standard for judging train serpentine instability in China. Usually, such a processing method is adopted: carry out 0.5-10 Hz band-pass filtering on the lateral vibration acceleration of the train bogie. -10m / s^2, it is considered that the train is laterally unstable (serpentine instability). However, this method has a large filtering range, and the filtered signal m...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to solve the technical problem of how to eliminate the serpentine instability after the serpentine instability, and provide a system for suppressing the serpentine instability by controlling the torque of the traction system

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