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Nonlinear system fuzzy and repetitive output controller and control method thereof

A non-linear system, repetitive controller technology, applied in the direction of program control, total factory control, total factory control, etc.

Active Publication Date: 2017-06-20
NORTHEASTERN UNIV
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  • Application Information

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Problems solved by technology

However, these methods have certain limitations, and the results obtained are also conservative.

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  • Nonlinear system fuzzy and repetitive output controller and control method thereof
  • Nonlinear system fuzzy and repetitive output controller and control method thereof
  • Nonlinear system fuzzy and repetitive output controller and control method thereof

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Embodiment Construction

[0047] The present invention will be further elaborated below in conjunction with the accompanying drawings of the description.

[0048] Such as figure 1 , 2 As shown, a fuzzy repetitive output controller for a nonlinear system of the present invention includes an improved repetitive control module, a state feedback gain module and a fuzzy system module, wherein the improved repetitive control module receives the output variable of the nonlinear system for filtering and delay processing, The output variable is sent to the state feedback gain module; the state feedback gain module adjusts the output of the repetitive control module and compensates it, the output variable of the state feedback gain module is sent to the fuzzy system module, and the repetitive control module and the fuzzy system module are combined, Formation of fuzzy repeated output controllers for nonlinear systems. The invention also has a state observer module, which sends the output feedback of the nonline...

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Abstract

The invention relates to a nonlinear system fuzzy and repetitive output controller and a control method thereof. The nonlinear system fuzzy and repetitive output controller comprises an improved repetitive control module, a state feedback gain module and a fuzzy system module. The improved repetitive control module receives an output variable of a nonlinear system and carries out filtering and time delay processing, and sends an output variable thereof to the state feedback gain module; the state feedback gain module adjusts the output of the repetitive control module and carries out compensation thereon, and an output variable of the state feedback gain module is sent to the fuzzy system module; and the repetitive control module and the fuzzy system module are combined to form the fuzzy and repetitive output controller of the nonlinear system. The fuzzy model is applied to the problem of periodic tracking control of the nonlinear system for the first time, and T-S fuzzy control and repetitive control are combined to form a new high-performance control method; and for the design of a repetitive controller based on a fuzzy observer, with the problem of fuzzy premise variable non-measurableness in an actual system being taken into consideration, the design is more comprehensive.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to a fuzzy repetitive output control method of a nonlinear system. Background technique [0002] In the process of modern industrial development, automatic control technology has been widely used in all walks of life of human beings. However, some tasks like spraying and collection often need to be repeated continuously. This kind of simple linear system can track or suppress the periodic disturbance signal through repeated control. However, the actual physical system and industrial process are relatively complex, and it is difficult to establish an accurate mathematical model for this nonlinear system through the traditional method suitable for linear systems. [0003] The Takagi-Sugeno (T-S) fuzzy model utilizes the nonlinear fuzzy membership function, and uses multiple linear time-invariant models in the local area to approximate the nonlinear system. The T-S model ca...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02G05B19/41885
Inventor 王迎春王蕊杨东升会国涛付国庆齐格任潇雅任妍谷永强
Owner NORTHEASTERN UNIV
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