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Limited state-based permanent magnet synchronous motor fuzzy position tracking control method

A permanent magnet synchronous motor, state-limited technology, applied in motor generator control, electronic commutation motor control, control system and other directions, can solve the problem of not guaranteeing the state quantity of the system

Active Publication Date: 2019-06-11
QINGDAO UNIV
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AI Technical Summary

Problems solved by technology

Since the system mathematical model of permanent magnet synchronous motor is nonlinear, including nonlinear coupling items of current and speed, the single slave control quantity cannot guarantee that the state quantity of the system is always in the desired constraint space

Method used

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  • Limited state-based permanent magnet synchronous motor fuzzy position tracking control method
  • Limited state-based permanent magnet synchronous motor fuzzy position tracking control method
  • Limited state-based permanent magnet synchronous motor fuzzy position tracking control method

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Embodiment Construction

[0135] The basic idea of ​​the present invention is: the method of the present invention uses the reduced-dimensional observer to estimate the angular velocity of the rotor of the permanent magnet synchronous motor, and uses the fuzzy logic system to approximate the highly nonlinear function in the system, and combines the self-adaptive and backstepping technology to construct the controller. The command filtering technology is introduced into the selection of the Lyapunov function in the recursive process and the construction of the intermediate virtual control signal, the control law is obtained by recursion, and the corresponding adaptive law is designed to adjust the unknown parameters; Under certain circumstances, the derivative signal of the command signal can be generated, which reduces the amount of calculation and solves the problem of "calculation explosion" caused by the continuous derivation of the virtual control function by the traditional backstepping method. By i...

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Abstract

The invention discloses a limited state-based permanent magnet synchronous motor fuzzy position tracking control method. According to the method, the problems of non-linearity and iron loss existing in electric automobile motor driving and control systems are solved; the state quantity and the control quantity of the motor system are restrained on the basis of a Barrier Lyapunov function, meanwhile, and a fuzzy logic system is utilized to approach a nonlinear function in the system, and a fuzzy self-adaptive position tracking controller is constructed. According to the method disclosed by theinvention, the tracking error of the system can be ensured to be converged into a small enough neighborhood of the original point; and the simulation result shows that the state quantities of the motor are ensured to be in the constraint space of the system by virtue of the method of the invention, and the input of the controller is stable in a bounded region. According to the method, the rapid and effective response of the position tracking control of the permanent magnet synchronous motor of the electric vehicle is realized, and the method is more suitable for a control object requiring rapid dynamic response such as an electric automobile driving system.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle motor position tracking control, in particular to a state-limited fuzzy position tracking control method for permanent magnet synchronous motors. Background technique [0002] Since the international financial crisis, the United States, Europe, Japan, South Korea and other developed countries are promoting the transformation and development of the automobile industry. Electric vehicle (EV) is a clean, efficient and sustainable means of transportation in the 21st century, thus forming a new round of upsurge in the development of new energy vehicles worldwide. Among all technological innovations, motor drives play an extremely important role, because future drive methods must have the characteristics of low energy consumption, high environmental protection, and strong sustainability. [0003] Electric vehicles include mechanical systems such as motor drive and control systems, driving forc...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P21/18
Inventor 于金鹏马玉梅邹明峻刘占杰付程胡亚强罗慧娟
Owner QINGDAO UNIV
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