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Fault-tolerant control method for singularly perturbed system with time delay

A singular perturbation, fault-tolerant control technology, applied in adaptive control, general control system, control/regulation system, etc., can solve the problem of fault-tolerant control method in the blank period, etc., to achieve the effect of enhancing stability

Active Publication Date: 2019-10-22
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0004] At present, in China, the research on the time-delay singular perturbation system is not yet mature, and the fault-tolerant control method for this system is also in a blank period.

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  • Fault-tolerant control method for singularly perturbed system with time delay
  • Fault-tolerant control method for singularly perturbed system with time delay
  • Fault-tolerant control method for singularly perturbed system with time delay

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Embodiment Construction

[0055] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0056] The present invention designs a fault-tolerant control method for a time-delay singular perturbation system, such as figure 1 shown, including the following steps:

[0057] Step 1: On different time scales, decompose the time-delay singular perturbation system into a slow subsystem with a delay and a fast subsystem without a delay;

[0058] Step 2: Design a simplified fault-tolerant controller for the slow subsystem with time delay;

[0059] Step 3: Design a state feedback controller for the fast subsystem without time delay;

[0060] Step 4: Integrate the simplified fault-tolerant controller designed in step 2 and the state feedback controller designed in step 3 to obtain a fault-tolerant controller for the entire time-delay singularly perturbed system.

[0061] In this embodiment, the general form of the time-delay singular pertur...

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Abstract

The invention discloses a fault-tolerant control method for a singularly perturbed system with time delay. Firstly, a singularly perturbed system with time delay is decomposed into a slow subsystem with time delay and a fast subsystem without time delay under different time scales; secondly, a simplified fault-tolerant controller is designed for the slow subsystem with time delay, and a state feedback controller is designed for the fast subsystem without time delay; and finally, the simplified fault-tolerant controller and the state feedback controller are integrated to get a fault-tolerant controller for the whole singularly perturbed system with time delay. The fault-tolerant control method of the invention can make compensation for a sensor fault in a singularly perturbed system with time delay quickly and effectively.

Description

technical field [0001] The invention belongs to the technical field of engineering control, and in particular relates to a fault-tolerant control method of a time-delay system. Background technique [0002] Since the advent of engineering cybernetics, theoretical research on various types of systems has been carried out gradually. Human society has entered the era of electrification, and people pay more and more attention to the theory of fault-tolerant control for time-delay systems, and various fault-tolerant control methods have been proposed. [0003] However, in many systems such as electrical systems (asynchronous generators, DC motors, converters, etc.), electromechanical systems (underwater robots, oscillators, fighter jets, etc.), biological systems (bacterial cultures, hearts, etc.), there are A system characterized by completely different performance at different time scales. People call the above system a singularly perturbed system, and a singularly perturbed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 梅平严乐刘云平
Owner NANJING UNIV OF INFORMATION SCI & TECH
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