Active-disturbance-rejection position servo control method for permanent magnet synchronous motor

A permanent magnet synchronous motor, servo control technology, applied in motor control, motor generator control, AC motor control and other directions, can solve problems such as limited application

Active Publication Date: 2021-09-07
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Active disturbance rejection control also has many shortcomings, which limit its application in engineering.

Method used

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  • Active-disturbance-rejection position servo control method for permanent magnet synchronous motor
  • Active-disturbance-rejection position servo control method for permanent magnet synchronous motor
  • Active-disturbance-rejection position servo control method for permanent magnet synchronous motor

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Embodiment Construction

[0031] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0032]The ADRS position servo control method based on the improved extended state observer in this embodiment is realized on the hardware basis of the general permanent magnet synchronous motor digital control drive system. The most basic hardware includes digital signal processor, non-contact Hall current sensor, absolute position encoder (Encorder), inverter, DC power supply (U DC ) and permanent magnet synchronous motors (PMSM). The system control algorithm is done in the digital signal processor.

[0033] The block diagram of the control system that realizes the ADRS position servo control method based on the improved extended state observer of the present invention is as follows: figure 1 shown. The specific implementation of the present invention is realized through the discrete control algorithm, and is completed by means of a dig...

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Abstract

The invention discloses an active-disturbance-rejection control method based on an improved extended state observer, and aims to overcome the defects of large tracking error, poor anti-interference capability, poor robustness, low response speed and the like in a traditional permanent magnet synchronous motor position servo system. The method comprises the steps of firstly, introducing speed into the extended state observer as an input quantity, and obtaining a better observation effect on the second-order state variable; and secondly, by introducing a finite time state observer, enabling the state observer not only to have the characteristic that a traditional extended state observer can observe disturbance, but also have the advantage that the finite time state observer can converge in finite time. Compared with a traditional position-speed-current three-closed-loop control method, the method has the advantages of being small in tracking error, high in anti-interference capacity and capable of following position signals with higher frequency, and the performance of a position servo system of the permanent magnet synchronous motor is improved.

Description

technical field [0001] The invention relates to the technical field of control of permanent magnet synchronous motors, in particular to an active disturbance rejection position servo control method based on an improved extended state observer. Background technique [0002] In recent years, with the advancement of power electronics technology, modern control theory and other fields, the position servo performance of motors has also been further improved, which makes servo motors widely used in various fields. Permanent magnet synchronous motors are widely used in servo drives due to their high efficiency, high reliability, high power density, and easy control. The traditional permanent magnet synchronous motor position servo system adopts the vector control method, including three closed-loop control of position loop, speed loop and current loop. The position loop often adopts proportional control, and the speed loop and current loop adopt proportional integral control. It i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/13H02P21/12H02P21/18H02P25/026H02P27/08
CPCH02P21/13H02P21/12H02P21/18H02P25/026H02P27/08H02P2207/05
Inventor 陈益广刘宏旭苏江
Owner TIANJIN UNIV
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