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Fuzzy Adaptive Dynamic Surface Control Method for Induction Motor Stochastic System

A technology of asynchronous motor and dynamic surface control, which is applied in motor control, motor generator control, electronic commutation motor control, etc.

Active Publication Date: 2020-08-25
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to propose a fuzzy adaptive dynamic surface control method for asynchronous motor stochastic system based on dimensionality reduction observer, so as to solve the technical problem of asynchronous motor system position tracking control in consideration of random disturbance

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  • Fuzzy Adaptive Dynamic Surface Control Method for Induction Motor Stochastic System
  • Fuzzy Adaptive Dynamic Surface Control Method for Induction Motor Stochastic System
  • Fuzzy Adaptive Dynamic Surface Control Method for Induction Motor Stochastic System

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Embodiment Construction

[0140] The basic idea of ​​the present invention is: use fuzzy logic system to approximate unknown random nonlinear function in asynchronous motor random system, and at the same time, based on Lyapunov function, use backstepping method to construct intermediate virtual control signal, gradually recursively obtain control law, thereby ensuring voltage stability In a bounded area, reduce control error and improve control accuracy.

[0141] The present invention will be further described in detail below in conjunction with the drawings and specific implementations:

[0142] Such as figure 1 As shown, the fuzzy adaptive dynamic surface control method of asynchronous motor random system based on dimensionality reduction observer mainly includes the fuzzy adaptive dynamic surface fuzzy adaptive backstepping controller of asynchronous motor random system based on dimensionality reduction observer1 , Coordinate transformation unit 2, SVPWM inverter 3, rotation speed detection unit 4 and c...

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Abstract

The invention discloses a fuzzy adaptive dynamic surface control method for an asynchronous motor stochastic system based on a reduced-dimensional observer. Aiming at the control precision requirements of asynchronous motor stochastic systems and the existing random disturbance and nonlinear problems, the method designs a fuzzy adaptive backstep controller to track a target position, and uses thefuzzy logic system to deal with the unknown stochastic nonlinearity in asynchronous motor system. The dynamic surface technology is introduced into a traditional backstep method to solve the problem of 'computation explosion' in the computing process, and a reduced-dimensional observer is constructed to estimate the rotor position and the rotor angular velocity of the asynchronous motor. The simulation results show that the method of the invention can quickly converge the tracking error to a sufficiently small neighborhood of the origin, and has the better anti-interference ability.

Description

Technical field [0001] The invention belongs to the technical field of asynchronous motor position tracking control, and in particular relates to a fuzzy adaptive dynamic surface control method of an asynchronous motor random system based on a dimension reduction observer. Background technique [0002] In recent years, asynchronous motors have been widely used in agriculture and industry due to their simple structure, high efficiency, long service life and strong practical applicability. However, the asynchronous motor system is a highly non-linear, strongly coupled, multivariable system, and in practical applications, the asynchronous motor system will be disturbed by some uncertain factors, such as uncertain parameters. In order to solve these problems, relevant scientific and technological workers have proposed some nonlinear control methods and achieved good results, such as advanced control technologies such as backstepping control, sliding mode control, and robust control. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/00H02P21/18H02P21/13
CPCH02P21/001H02P21/0017H02P21/13H02P21/18H02P2203/03
Inventor 于金鹏马玉梅赵恩亮胡成江程帅邹明峻
Owner QINGDAO UNIV
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