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Permanent magnet synchronous motor control system based on fuzzy sliding membrane variable structure

A permanent magnet synchronous motor and control system technology, applied in the control system, motor control, vector control system, etc., can solve the problems of poor robustness, poor servo control effect of permanent magnet synchronous motors, etc., to reduce chattering problems, Improve self-adaptability and robustness, the effect of simple overall structure

Inactive Publication Date: 2019-09-20
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditionally, permanent magnet synchronous motors generally adopt PI control. PI control is a linear control with extremely poor robustness, so it is not effective for servo control of permanent magnet synchronous motors.

Method used

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  • Permanent magnet synchronous motor control system based on fuzzy sliding membrane variable structure
  • Permanent magnet synchronous motor control system based on fuzzy sliding membrane variable structure
  • Permanent magnet synchronous motor control system based on fuzzy sliding membrane variable structure

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Embodiment Construction

[0043] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0044]A permanent magnet synchronous motor control system based on fuzzy synchronous film variable structure, characterized in that the system includes: sensor module, permanent magnet synchronous motor, fuzzy synchronous film controller module, Clark transformation module, Park transformation module, PI controller module, dq / αβ conversion module, SVPWM module and inverter module, of which:

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Abstract

The invention belongs to the field of permanent magnet synchronous motors, and discloses a permanent magnet synchronous motor control system based on a fuzzy sliding membrane variable structure. The system comprises a sensor module, a permanent magnet synchronous motor, a fuzzy sliding membrane controller module, a Clark conversion module, a Park conversion module, a PI controller module, a dq / alphabeta conversion module, a SVPWM module and an inverter module. The fuzzy sliding membrane controller module comprises a sliding membrane variable structure controller and a fuzzy controller. The sliding membrane variable structure controller is used for constructing the relationship between the difference between the commanded speed and the actual speed, the sliding membrane parameter epsilon and the rated current of the q-axis, and the fuzzy controller of the rated current of the q-axis is obtained by using the relationship to adjust the sliding membrane parameter epsilon in real time so as to improve the response speed of the motor. With application of the system, the control performance of the permanent magnet synchronous motor is effectively improved, the speed overshoot is reduced, the chattering problem caused by the sliding membrane variable structure is reduced and the adaptability and the robustness of the system are improved.

Description

technical field [0001] The invention belongs to the field of permanent magnet synchronous motors, and more specifically relates to a permanent magnet synchronous motor control system based on fuzzy sliding film variable structure. Background technique [0002] Permanent magnet synchronous motors are widely used in AC servo systems because of their advantages such as convenient use, high reliability, and superior performance. The traditional PID control algorithm is simple and reliable, and can meet the control requirements to a certain extent, but it is difficult to meet the speed regulation requirements when the external disturbance is too large or the precision requirements are high. [0003] In recent years, many modern control theories including fuzzy control and sliding mode control have been gradually applied to the speed control system of permanent magnet synchronous motor. Among them, the sliding mode variable structure control has attracted more and more scholars' ...

Claims

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Application Information

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IPC IPC(8): H02P21/00H02P25/022
CPCH02P21/0003H02P21/0007H02P21/001H02P25/022H02P2207/05
Inventor 李曦徐冬磊
Owner HUAZHONG UNIV OF SCI & TECH
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