Permanent-magnet synchronous motor position tracking controller and control method thereof

A tracking controller and permanent magnet synchronization technology, which is applied in the direction of motor generator control, electronic commutation motor control, electromechanical brake control, etc., can solve the problem of severe high-frequency oscillation of control signals, large initial position tracking error, and difficult control signals Derivatives and other issues to achieve the effects of reducing the impact of transient performance, overcoming complexity explosion, and overcoming tracking performance

Active Publication Date: 2019-11-08
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

[0008] In order to solve the problems existing in the prior art, such as large system initial position tracking error, more severe high-frequency oscillation of the control signal, and difficulty in accurately estimating the derivative of the control signal, the present invention proposes a modular neural system for position tracking control of permanent magnet synchronous motors. The structure of the dynamic surface controller can not only significantly improve the transient performance of the control system, avoid the high-frequency oscillation of the controller input signal, but also improve the accuracy of the estimation result of the virtual control signal, making this design method more beneficial to the actual Engineering Applications

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[0033] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is only some embodiments of the present invention, but not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordina...

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Abstract

The invention provides a permanent-magnet synchronous motor position tracking controller and a control method thereof. Transient performance of the system is improved through a modularized neural dynamic surface controller (MNDSC) method. the controller is formed by two parts, that is, a prediction module and a position tracking controller module. On the one hand, a predictor module based on a neural network is designed to carry out approximate evaluation on unknown system parameters and load disturbance of a PMSM in the control process; and on the other hand, a traditional DSC in the positiontracking controller module is improved through a second-order nonlinear tracking differentiator to make the virtual control input derivative more accurate.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motor control systems, in particular to a structure and a control method for a position tracking controller of an uncertain permanent magnet synchronous motor. Background technique [0002] Permanent magnet synchronous motors (PMSM) have been widely used in industry due to their compact structure, high torque density, high reliability, low cost, easy maintenance, and wide speed range. In general, a permanent magnet synchronous motor can be represented as a highly nonlinear, strongly coupled, and multivariable system. Unfavorable factors affecting the control performance of permanent magnet synchronous motors include unmodeled dynamics in engineering applications, temperature changes, skin effects, core saturation, and load disturbances, resulting in unsatisfactory performance. Therefore, improving the control performance of permanent magnet synchronous motors under various uncertain an...

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Application Information

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IPC IPC(8): H02P21/18
CPCH02P21/18
Inventor 刘陆蒋宝仪王丹彭周华从思铭袁凯鹏
Owner DALIAN MARITIME UNIVERSITY
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