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Permanent magnet synchronous motor servo control method and servo system

A permanent magnet synchronous motor, servo control technology, applied in control systems, motor control, vector control systems, etc., can solve problems affecting control performance, etc., to improve control performance, improve steady-state performance, and correct nonlinear error feedback. Effect

Active Publication Date: 2021-10-26
武汉市正弦电气技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a permanent magnet synchronous motor servo control method and a servo system, which are used to solve the problem that the real-time change of inertia will affect the control performance of the existing permanent magnet synchronous motor control system when the motor is running

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  • Permanent magnet synchronous motor servo control method and servo system
  • Permanent magnet synchronous motor servo control method and servo system
  • Permanent magnet synchronous motor servo control method and servo system

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Embodiment Construction

[0018] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0019] It should be understood that the term "comprising" and other expressions with similar meanings in the specification or claims of the present invention and the above drawings mean to cover non-exclusive inclusion, such as a process, method or system, equipment comprising a series of steps or units There is no limitation to the steps...

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Abstract

The invention provides a permanent magnet synchronous motor servo control method and a servo system, and the method comprises the steps: constructing a mathematical model of a permanent magnet synchronous motor under a rotating coordinate system and a motion equation of a permanent magnet synchronous motor control system, and designing the control logic of the permanent magnet synchronous motor under a non-series structure based on the mathematical model and the motion model; adopting a three-order expansion state observation model to observe system disturbance, combining a given disturbance estimation value , calculating an error between a system disturbance error and the disturbance estimation value, determining a fuzzy inference rule based on expert experience, and establishing a fuzzy rule control table of control parameters; and obtaining a control superposition amount through defuzzification processing, and adjusting PI D control parameters of the permanent magnet synchronous motor based on the control superposition amount. By means of the scheme, the influence caused by system interference can be reduced, control parameter changes caused by motor parameter changes can be well adapted, nonlinear errors can be corrected online in real time, and the control performance of the servo system is improved.

Description

technical field [0001] The invention relates to the field of permanent magnet synchronous motors, in particular to a permanent magnet synchronous motor servo control method and a servo system. Background technique [0002] Permanent magnet synchronous motor (PMSM) uses permanent magnets to generate a magnetic field, and has the advantages of small size and high power density, and is widely used in CNC machine tools, automobile manufacturing, industrial robots and other fields. Since its magnetic field is mainly provided by internal permanent magnets, it is very difficult to control its magnetic field from the outside. The commonly used control methods include vector control and direct torque control, but in order to make the PMSM system have a higher performance control effect, more advanced and effective control strategies must be carried out to solve other uncertain problems. [0003] Currently the most widely used vector control usually uses two regulators of speed and c...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/14H02P21/13H02P6/34H02P25/026H02P27/08
CPCH02P21/001H02P21/14H02P21/13H02P6/34H02P25/026H02P27/08H02P2207/05
Inventor 李晓伟何畏张晓光杨志洵
Owner 武汉市正弦电气技术有限公司
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