Permanent magnet synchronous motor random system fuzzy control method based on finite time dynamic surface technology

A permanent magnet synchronous, time-limited technology used in motor control, motor generator control, AC motor control, etc.

Active Publication Date: 2021-09-10
QINGDAO UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0007] The purpose of this invention is to propose a fuzzy control method for permanent magnet synchronous motor stochastic system based on finite time dynamic surface technology to solve the problem of permanent Technical Problems of Position Tracking Control of Magnetic Synchronous Motor System

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  • Permanent magnet synchronous motor random system fuzzy control method based on finite time dynamic surface technology
  • Permanent magnet synchronous motor random system fuzzy control method based on finite time dynamic surface technology
  • Permanent magnet synchronous motor random system fuzzy control method based on finite time dynamic surface technology

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Embodiment Construction

[0125] The basic idea of ​​the present invention is: utilize fuzzy logic system to approach the unknown random nonlinear function in the random system of permanent magnet synchronous motor, at the same time based on the Lyapunov function, use the backstepping method to construct the intermediate virtual control signal, and obtain the control law step by step, thereby ensuring The voltage is stabilized in a bounded area, reducing the control error and improving the control accuracy.

[0126] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0127] Such as figure 1 as shown, figure 1 The components in the system include the permanent magnet synchronous motor stochastic system fuzzy controller 1, coordinate transformation unit 2, SVPWM inverter 3, speed detection unit 4 and current detection unit 5 of finite-time dynamic surface technology.

[0128] in, figure 1 Among U, V, W represent the three-phase...

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Abstract

The invention belongs to the technical field of permanent magnet synchronous motor position tracking control, and particularly discloses a permanent magnet synchronous motor random system fuzzy control method based on a finite time dynamic surface technology. According to the method, aiming at the control problem of position tracking of a permanent magnet synchronous motor random system, a fuzzy self-adaptive backstepping controller is designed to track a target position, and an unknown random nonlinear function in the permanent magnet synchronous motor system is processed by utilizing a fuzzy logic system; and the problem of calculation explosion in backstepping design is avoided by adopting a dynamic surface technology, and a finite time technology is applied to a random nonlinear system of the permanent magnet synchronous motor so that the convergence speed, the tracking precision and the anti-interference capability are improved. Simulation results show that the method can realize rapid tracking of expected position signals.

Description

technical field [0001] The invention belongs to the technical field of position tracking control of permanent magnet synchronous motors, and in particular relates to a random system fuzzy control method of permanent magnet synchronous motors based on finite time dynamic surface technology. Background technique [0002] Permanent magnet synchronous motors have been widely used in agriculture and industry due to their advantages of simple structure, high efficiency, long service life and strong practicability. Because the permanent magnet synchronous motor is highly nonlinear, strongly coupled and multivariable, it is easily affected by uncertain factors such as changes in motor parameters and external load disturbances in practical applications. In order to better realize the position tracking control of permanent magnet synchronous motors, Effective control strategies need to be studied. In recent years, relevant researchers have studied many effective control strategies fo...

Claims

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Application Information

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IPC IPC(8): H02P21/14H02P21/18H02P25/022H02P27/08
CPCH02P21/001H02P21/14H02P21/18H02P25/022H02P27/085H02P2207/05
Inventor 于金鹏刘加朋宋思佳马玉梅陈曦徐雨梦马盼盼宋晨
Owner QINGDAO UNIV
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