Control method for permanent magnet brushless direct current motor

A permanent magnet brushless DC and motor control technology, applied in the direction of torque ripple control, electronic commutator, etc., can solve the problems of high cost of control software and hardware, inability to effectively suppress torque ripple, etc., and achieve closed loop The effect of control

Inactive Publication Date: 2015-11-25
HEFEI UNIV OF TECH
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Problems solved by technology

[0004] The present invention provides a permanent magnet brushless DC motor control method, which solves the problem that in the existing methods, the permanent magnet brushless DC motor can be simply controlled, but the torque ripple cannot be effectively suppressed, or the torque ripple can be better suppressed, but the The problem of spending too much on control software and hardware

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  • Control method for permanent magnet brushless direct current motor
  • Control method for permanent magnet brushless direct current motor
  • Control method for permanent magnet brushless direct current motor

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Embodiment Construction

[0026] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0027] Such as figure 1 As shown, a permanent magnet brushless DC motor control method, its specific implementation process is as follows:

[0028] Process 1: Determine the rotor position and speed calculation based on the Hall signal.

[0029] Process 2: design of rotor energy storage outer loop and regulator output inner loop setting.

[0030] Process 3: Power inner loop design and hysteresis mode energy pulse regulator output control power device.

[0031] Process 1 includes the following specific steps:

[0032] There are three Hall signal outputs inside the motor, and a total of eight encoding signals (000, 011, 001, 101, 100, 110, 010, 111) are obtained, of which 000 and 111 are error signals, and the remai...

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Abstract

The invention discloses a control method for a permanent magnet brushless direct current motor. The method comprises the steps as follows: storage kinetic energy of a rotor is designed and regulated as outer loop control; output average power of direct current power supply is designed and regulated as inner loop control; the permanent magnet brushless direct current motor is controlled by a modulation mode of an energy hysteresis loop; meanwhile, addition of a complicated observer and an extra hardware detection sensor is avoided; stable energy transmission is realized; and pulsation of output torque is suppressed. The method disclosed by the invention has the characteristics of being simple, practical, convenient to control, fast in dynamic response and good in system stability.

Description

technical field [0001] The invention belongs to the technical field of motor control application, and in particular relates to a permanent magnet brushless DC motor control method. Background technique [0002] Permanent magnet brushless DC motor (Brushless DC motor, BLDCM) has been widely used in industry, aerospace and other fields due to its simple structure, good speed regulation performance and high power density. The existing permanent magnet brushless DC motor mainly adopts the control strategy of the outer loop of the speed and the double closed loop of the negative bus current. Torque ripple in brushed DC motors. [0003] The traditional double-closed-loop control strategy uses the speed outer loop and the current inner loop PI regulator to achieve speed and current control, but due to the non-ideal trapezoidal induction potential of the permanent magnet brushless DC motor and the six-state commutation, the torque Pulsation is not well eliminated. However, advanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P6/16
Inventor 姜卫东胡杨赵德勇汪磊黄辉王永生
Owner HEFEI UNIV OF TECH
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