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Adaptive fault-tolerant control method for limited train input and actuator failure

An input-limited, fault-tolerant control technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as train system influence

Active Publication Date: 2019-06-04
BEIJING JIAOTONG UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide an adaptive fault-tolerant control method for limited train input and actuator failure, to solve the impact of limited train input and actuator failure on the train system

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  • Adaptive fault-tolerant control method for limited train input and actuator failure
  • Adaptive fault-tolerant control method for limited train input and actuator failure
  • Adaptive fault-tolerant control method for limited train input and actuator failure

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[0071] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0072] like figure 1 As shown, the adaptive fault-tolerant control method for limited train input and actuator failure disclosed by the present invention includes the following steps:

[0073] S1. Analyze the force situation of the longitudinal movement of the train, and establish the dynamic equation of the longitudinal movement of the train for the limited input of the train and the failure of the actuator;

[0074] S2. Approximating the unknown additional resistance at time t of the train in the train longitudinal moti...

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Abstract

The invention discloses an adaptive fault tolerant control method for the train input limitation and the actuator fault. The method comprises the steps that S1, a train longitudinal movement kinetic equation for the train input limitation and the actuator fault is established; S2, approximation to the unknown additional resistance of the train is performed by using a neural network; S3, an approximate PID sliding mode surface is constructed by using an approximate PID sliding mode surface equation; S4, a controller equation, the adaptive law of each unknown parameter estimation value and the parameter equation of the sliding mode surface parameters in the approximate PID sliding mode surface equation are designed; and S5, the approximate PID sliding mode surface equation, the controller equation, the adaptive law of each unknown parameter estimation value of each equation and the parameter equation of the sliding mode surface parameters are substituted in the train longitudinal movement kinetic equation so that a train closed-loop dynamic control equation is obtained, and adaptive fault tolerant control for the train input limitation and the actuator fault is performed by using the train closed-loop dynamic control equation. The train system is enabled to have great position tracking performance and speed tracking performance.

Description

technical field [0001] The invention relates to the technical field of train control. More specifically, it relates to an adaptive fault-tolerant control method for train input constraints and actuator failures. Background technique [0002] The occurrence of failures in any system is inevitable. Train is an important means of transportation in modern society. Once the train system breaks down, it may lead to train accidents, which will cause huge losses of personnel and property, and affect social stability and development. Therefore, the reliability and safety of the train system are crucial to the safe operation of the train. In order to improve the reliability and safety of the train system, fault-tolerant control came into being, which opened up a new way to improve the reliability of the train system, and has become an important research field at home and abroad. Moreover, during the running of the train, the control input of the train system cannot increase infinit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 董海荣林雪姚秀明李浥东宁滨
Owner BEIJING JIAOTONG UNIV
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