Nerve self-adaption fault-tolerant control method for train unknown perturbation

A fault-tolerant control and self-adaptive technology, applied in self-adaptive control, general control system, control/regulation system, etc., can solve problems such as train impact

CN106249591AActive Publication Date: 2016-12-21BEIJING JIAOTONG UNIV

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Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: BEIJING JIAOTONG UNIV
Publication Date: 2016-12-21

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Abstract

The invention relates to a nerve self-adaption fault-tolerant control method for train unknown perturbation. Based on the stress analysis of the longitudinal motion of a train, the longitudinal motion dynamic equation of the train is established. According to an actuator fault and the longitudinal motion dynamic equation of the train, a neural network radial basis function is used to approximate unknown additional resistance. The longitudinal motion dynamic equation of the train in the case of the actuator fault is established, and then a proportional-integral-differential sliding-mode surface is constructed. According to the longitudinal motion dynamic equation of the train in the case of the actuator fault, the closed-loop dynamic equation of train is established through an unknown self-adaption law and a controller. The stability of the system is proved, and then an observer and a controller equation are used to control the actual displacement and velocity of the train to approach expected displacement and velocity. According to the invention, the influence of the actuator fault on the train system can be compensated; the influence of additional resistance on the train system is attenuated or removed; and the train system has a good position and velocity tracking performance.

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Description

technical field

[0001] The invention relates to the technical field of train control. Specifically, it relates to a neural adaptive fault-tolerant control method based on unknown disturbances of trains. Background technique

[0002] The safe operation of trains is very important, and its safety is closely related to people's lives, social development and national progress. How to improve the comfort, convenience and effectiveness of trains is a research direction that attracts attention today.

[0003] As people's requirements for train reliability and safety are getting higher and higher, actuator failures, sensor failures, component failures, etc. have attracted widespread attention. Fault-tolerant control is a control strategy that effectively reduces the impact of faults and ensures the expected performance of the system. It is mainly divided into passive fault-tolerant control strategies and active fault-tolerant control strategies.

[0004] However, there are relati...

Claims

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