Global online heuristic type based dynamic planning permanent magnet synchronous motor vector control method

A permanent magnet synchronous motor, vector control technology, applied in motor generator control, vector control system, electronic commutation motor control and other directions, can solve the problem of permanent magnet synchronous motor torque ripple and so on

Active Publication Date: 2018-06-12
SOUTHEAST UNIV
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Problems solved by technology

However, after the traditional SMC control enters the sliding mode surface, there will be "chattering" phenomenon, and it is used in the current inner loop of the vector control system of the permanent magnet synchronous motor, which may easily cause the torque ripple of the permanent magnet synchronous motor

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  • Global online heuristic type based dynamic planning permanent magnet synchronous motor vector control method
  • Global online heuristic type based dynamic planning permanent magnet synchronous motor vector control method
  • Global online heuristic type based dynamic planning permanent magnet synchronous motor vector control method

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Embodiment Construction

[0059] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0060] Based on the global online heuristic dynamic programming permanent magnet synchronous motor vector control method, its implementation specifically includes the following steps:

[0061] Step 1: Initialize the target network learning rate, evaluation network learning rate, and single neuron PI algorithm parameters of the single neuron global online heuristic dynamic programming algorithm, and design an external reinforcement learning signal according to the tracking error of the system;

[0062] Build a permanent magnet synchronous mo...

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Abstract

The invention discloses a global online heuristic type based dynamic planning permanent magnet synchronous motor vector control method. A current ring adopts an improved approaching rate sliding modevariable structure controller, reduces current buffeting phenomenon and inhibits torque pulsation of the permanent magnet synchronous motor; a speed ring applies a mononeuron global online heuristic type based dynamic programming algorithm to evaluate the parameter change of the permanent magnet synchronous motor, and self-adaptively adjusts a discount factor K; through sampling a motor encoder and using the zero difference of a target rotate speed and an actual rotate speed as an optimized target, a study signal is designed and intensified; through generating an internal intensified study signal in a target network, the reference amount of q axis current can be adjusted through continuously online study, the vector change of the permanent magnet synchronous motor is compensated, thereby enhancing the speed anti-interference ability of the permanent magnet synchronous motor. The method presented by the invention has very strong pertinence and practicability to the permanent magnet synchronous motor vector control system.

Description

technical field [0001] The invention relates to the technical field of intelligent control of permanent magnet synchronous motors, in particular to a vector control method for permanent magnet synchronous motors based on global online heuristic dynamic programming. Background technique [0002] Permanent magnet synchronous motor (PMSM) has the advantages of high power density, simple structure, small size, and strong reliability. It is widely used in the fields of numerical control machine tools, aerospace and robotic manipulator control. The permanent magnet synchronous motor itself is also a strongly coupled and nonlinear control system, and there are problems of parameter changes and external disturbances. Therefore, reliable control methods for permanent magnet synchronous motors have always been the focus of research at home and abroad. In recent years, there have been many nonlinear control methods for permanent magnet synchronous motors. Foreign S.Barkat scholars (S....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/18H02P21/22H02P6/10
CPCH02P6/10H02P21/0007H02P21/0014H02P21/0025H02P21/18H02P21/22
Inventor 余海涛王琦
Owner SOUTHEAST UNIV
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