Digital-control servo system and its control for permanent magnet synchronous motor without bearing

A permanent magnet synchronous motor and servo system technology, applied in synchronous machines, electrical components, electromechanical devices, etc., can solve the problem of no patents and literature, and achieve the effects of reducing volume and power consumption, reducing length, and reducing manufacturing costs

Inactive Publication Date: 2005-12-28
JIANGSU UNIV
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  • Digital-control servo system and its control for permanent magnet synchronous motor without bearing
  • Digital-control servo system and its control for permanent magnet synchronous motor without bearing
  • Digital-control servo system and its control for permanent magnet synchronous motor without bearing

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Embodiment approach

[0032] The control method adopted is a five-degree-of-freedom bearingless permanent magnet synchronous motor CNC servo system prototype body composed of a two-degree-of-freedom bearingless permanent magnet synchronous motor (21) and a three-degree-of-freedom radial-axial hybrid magnetic bearing (22). , using a linear closed-loop controller (30) to control the radial-axial position of the three-degree-of-freedom hybrid magnetic bearing; adjusting the control parameters of the position PID controller (31, 32, 33) to realize the three-degree-of-freedom radial-axial hybrid The magnetic bearing works stably; the Hall sensor (15) is used to detect the size of the rotor magnetic field, and the radial displacement and the motor speed are dynamically decoupled and controlled using a rotor field-oriented control strategy based on a two-degree-of-freedom bearingless permanent magnet synchronous motor; by adjusting the position control The parameters of two PI controllers (71, 72) and two ...

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Abstract

The three degree of freedom radial-axial direction mixing magnetic bearing, and two degree of freedom bearingless permanent magnet synchronous motor are used to compose 5 degree of freedom bearingless permanent magnet synchronous motor digital-control servosystem. Three independent PID linear controllers are used to make independent control. Through adjusting control parameter of PID controllers, implements steady operation of the mixing magnetic bearing. The hall sensor is used to detect the size of magnetic field of rotator, and directional control strategy based on rotator field is adopted to make dynamic decoupling control. Through adjusting parameter of two PI controller in location control ring, ensures redial direction suspension system of bearingless motor has good dynamical and static property. Through adjusting parameters of three PI controller in rotating speed control ring, ensures the rotating speed has good response property.

Description

technical field [0001] The present invention is a structure and control method of a bearingless permanent magnet synchronous motor numerical control servo control system, which is suitable for many special electrical transmission fields such as sealed pumps, high-speed or ultra-high-speed numerical control machine tools, industrial robots, aerospace, life sciences, etc., especially non-contact, No need for lubrication and no wear, etc., it is used in special occasions such as vacuum technology, pure clean room and aseptic workshop, and the transmission of corrosive media or very pure media, and belongs to the technical field of electric drive control equipment. Background technique [0002] The traditional five-degree-of-freedom bearingless permanent magnet motor (except the rotational degree of freedom) is composed of two two-degree-of-freedom bearingless permanent magnet synchronous motor units and one axial magnetic bearing. The mechanical structure of the motor is quite ...

Claims

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Application Information

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IPC IPC(8): H02K21/00
Inventor 朱熀秋孙玉坤刘贤兴高国琴陈志刚陈保进
Owner JIANGSU UNIV
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