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Permanent magnet synchronous motor periodic disturbance suppression method of inner model equivalent input interference

A permanent magnet synchronous motor and periodic disturbance technology, which is applied in motor control, motor generator control, AC motor control, etc., can solve the problems of complex controller structure and inability to effectively suppress periodic disturbance in real time, and achieve a simple structure Effect

Active Publication Date: 2021-07-02
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the technical problem in the above-mentioned prior art that the controller structure is complex and cannot effectively suppress periodic disturbances in real time

Method used

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  • Permanent magnet synchronous motor periodic disturbance suppression method of inner model equivalent input interference
  • Permanent magnet synchronous motor periodic disturbance suppression method of inner model equivalent input interference
  • Permanent magnet synchronous motor periodic disturbance suppression method of inner model equivalent input interference

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Embodiment Construction

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0045] refer to figure 1 , figure 1 It is an execution flow chart of the method for suppressing the periodic disturbance of the permanent magnet synchronous motor in the model equivalent input disturbance of the present invention.

[0046] A specific embodiment of the present invention provides a method for suppressing periodic disturbances of permanent magnet synchronous motors with internal model equivalent input disturbances, comprising the following steps:

[0047] S1. Mathematically model the permanent magnet synchronous motor to obtain the state equation of the control system with disturbance.

[0048] Step S1 is specifically:

[0049] The expression of the permanent magnet synchronous motor mechanical equation...

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Abstract

The invention discloses a permanent magnet synchronous motor periodic disturbance suppression method for internal model equivalent input interference, and the method comprises the following steps: performing mathematical modeling on a permanent magnet synchronous motor to obtain a control system state equation with disturbance; designing a proportional-integral controller according to the control system state equation, and tracking reference input according to the proportional-integral controller; designing an inner model equivalent input interference suppressor according to the control system state equation, and suppressing periodic disturbance of the permanent magnet synchronous motor through the torque disturbance suppressor. According to the method, the internal model of the periodic signal is added into the disturbance compensator of the equivalent input interference method, so periodic interference can be completely suppressed in real time, the structure of a control system is simplified, and an expected suppression effect is achieved.

Description

technical field [0001] The invention relates to the field of motor control, and more specifically relates to a method for suppressing periodic disturbances of permanent magnet synchronous motors with equivalent input disturbances of internal models. Background technique [0002] The permanent magnet synchronous motor (PMSM) servo system is widely used in high-performance and high-precision control occasions, but factors such as the eccentricity of the motor shaft and power harmonics during the work process will bring periodic disturbances to the control system, which has a significant impact on the control performance. influences. Therefore, high-performance servo systems need to suppress it to ensure control accuracy and stability. The equivalent input disturbance method is an active disturbance suppression method, which can observe the system disturbance and add its equivalent value to the input to achieve the suppression effect. Introducing the internal model of periodi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P21/00H02P21/05H02P21/20H02P25/022
CPCH02P6/10H02P21/0003H02P21/05H02P21/20H02P25/022H02P2207/05
Inventor 佘锦华刘振焘梅启程
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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