Driving method and circuit for permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and driving method, which is applied in the direction of electronic commutator, current controller, etc., can solve the problems that cannot eliminate the accumulation error of engraving line, the drift phenomenon of motor stability, and affect the stability of motor speed, etc., to achieve The effect of improving control stability, eliminating high-order harmonic pulsation, and improving speed stability
CN105450101AInactive Publication Date: 2016-03-30XIAN ZHONGKE PHOTOELECTRIC PRECISION ENG CO LTD
4 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIAN ZHONGKE PHOTOELECTRIC PRECISION ENG CO LTD
Publication Date
2016-03-30
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a driving method and circuit for a permanent magnet synchronous motor. The driving circuit for the permanent magnet synchronous motor comprises a driving control module, a current detection module, a power driving module and a magnetic pole position detection module; the driving control module comprises a speed solving unit, a speed control unit, a current control unit, a decoupling variation unit and a sine wave control unit; the current detection module comprises a current detection circuit, a signal conditioning circuit and an analog-digital conversion circuit; the magnetic pole position detection module comprises a magnetic pole position detection sensor and a signal conditioning circuit; through PLL / PID dual-mode control, the problem that the traditional PID controlled motor has the phenomenon of control delay due to time draft in stability can be solved and the stability of the speed of the motor can be improved further.
Need to check novelty before this filing date? Find Prior Art

Description

【Technical field】

[0001] The invention belongs to the technical field of automatic motor control, and relates to a driving method and circuit of a permanent magnet synchronous motor. 【Background technique】

[0002] In the indoor space measurement and positioning system, the sine wave permanent magnet synchronous motor is used to drive the optical electromechanical rotor to provide time difference measurement, and the motor speed stability is the key technical index of the system.

[0003] The existing sine wave permanent magnet synchronous motor has the following problems:

[0004] 1) The existing sine wave permanent magnet synchronous motor adopts PWM drive control technology. Because PWM control has a high switching frequency, the current of the motor produces higher harmonic changes other than the fundamental wave, thereby causing torque pulsation of the motor rotor. phenomenon, which directly affects the stability of the motor speed;

[0005] 2) The existing self-contr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More