A Fault Diagnosis Method for Suspension Controller

Abstract

The invention discloses a levitation controller fault diagnosis method comprising the following steps: a clock source sends a life signal to levitation controllers on a cycle of preset time; each levitation controller binds real-time status information thereof with the life signal to obtain first information, and returns the first information to the clock source; the clock source binds the first information with the system time to obtain second information; when a fault occurs, operation process intermediate variables of the levitation controllers in a preset number of operation cycles before and after the occurrence of the fault are stored in a fault recording unit; and when the network is idle, the operation process intermediate variables are called from the fault recording unit and combined with the second information to diagnose the fault. By adopting the method, information about each levitation controller can be displayed in detail, and the sequence of faults can be identified. Therefore, the diagnosis of levitation controllers is more precise and accurate, and the reliability of maglev trains is improved.

Description

technical field [0001] The invention relates to the technical field of maglev trains, in particular to a fault diagnosis method for a levitation controller. Background technique [0002] The medium and low speed maglev train is a new type of rail transportation. Compared with the traditional wheel-rail train, it belongs to a power-distributed transportation system, that is, each vehicle is a motor vehicle, so there are more electrical equipment distributed at the bottom of the train. At the same time, the design of the running mechanism of the maglev train is unique, the equipment structure is relatively complex, the electrical characteristics are diverse, and it involves strong electricity and magnetism, and there is a strong coupling between the equipment. As one of the core systems of the maglev train, the suspension control system is responsible for the suspension function of the entire vehicle, and its stability and reliability are important guarantees for the normal op...

AI Technical Summary

Problems solved by technology

[0003] However, there are two main problems in the fault diagnosis technology in the prior art: firstly, the information of each component in the entire vehicle system is only roughly displayed, and the status information of each component inside the suspension control system is not displayed in detail, and these Detailed information is essential for evaluating the status and performance of the suspension system; secondly, it is not possible to distinguish the sequence of each fault point when a multi-point fault occurs. The two adjacent control points are coupled, and the control state of one point will affect the other point. Therefore, when multiple points fail at the same time, the failures of these points have a time sequence relationship. This time sequence Relationships and current state information are important for debugging and evaluation

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