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Command filter limited time fuzzy control method of permanent magnet synchronous motor

A permanent magnet synchronous motor, finite time technology, applied in the direction of motor generator control, electronically commutated motor control, control system, etc., can solve problems such as computational explosion

Active Publication Date: 2017-05-31
QINGDAO UNIV
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  • Abstract
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Problems solved by technology

However, the continuous derivation of the virtual control function in the traditional backstepping control is easy to cause the problem of "computational explosion"

Method used

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  • Command filter limited time fuzzy control method of permanent magnet synchronous motor
  • Command filter limited time fuzzy control method of permanent magnet synchronous motor
  • Command filter limited time fuzzy control method of permanent magnet synchronous motor

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Embodiment Construction

[0116] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0117] combine figure 1 As shown, the command filtering finite time fuzzy control method of permanent magnet synchronous motor mainly includes the command filtering fuzzy finite time controller 1 of permanent magnet synchronous motor, coordinate transformation unit 2, SVPWM inverter 3 and speed detection unit 4 with current sense unit 5. in:

[0118] The speed detection unit 4 and the current detection unit 5 are mainly used to detect the current value and speed-related variables of the permanent magnet synchronous motor. The actual measured current and speed variables are used as input, and the permanent magnet synchronous motor drive system based on command filtering fuzzy finite time The controller 1 performs voltage control, and finally converts to three-phase electricity to control the speed of the permanent magnet synchronous motor. In ...

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Abstract

The invention discloses a command filter limited time fuzzy control method of a permanent magnet synchronous motor. The control method is capable of, in allusion to the existent nonlinear problem in a motor drive and control system, introducing a command filter technology into the traditional backstopping design method, and successfully overcoming the problem of 'computation explosion' in the traditional backstopping control caused by the continuous derivation. A fuzzy logic system is used for approaching the nonlinear function in the system, and the command filter backstopping technology is combined with a fuzzy self-adaption method to construct a fuzzy self-adaptive controller; the limited time method has the anti-interference performance and the robustness to the signals, such as the external load interference; and under the limited time control, the system stability tracking error is small, the dynamic response time is short, and the convergence rate and the interference rejection capability of the system are improved. Compared with the prior art, the control method has the faster response speed, the stronger anti-interference performance and the better tracking effect.

Description

technical field [0001] The invention relates to a speed regulation control technology of a permanent magnet synchronous motor, in particular to a fuzzy control method for command filtering of a permanent magnet synchronous motor with limited time. Background technique [0002] The permanent magnet synchronous motor is widely used in the AC servo system because of its superior performance. The permanent magnet synchronous motor is a multi-variable, strongly coupled nonlinear control object, and is affected by uncertain factors such as motor parameter changes and external load disturbances. influences. Traditional control strategies such as vector control and direct torque control have greatly improved the performance of permanent magnet synchronous motors, but these methods have not given a complete proof in theory, and have not fundamentally solved the problem of motor parameter changes and external loads. disturbance problem. [0003] Since the dynamic mathematical model ...

Claims

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Application Information

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IPC IPC(8): H02P21/00
CPCH02P21/001
Inventor 于金鹏马玉梅于海生山炳强杨雪婷牛浩
Owner QINGDAO UNIV
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