A phase-lock steady speed control system of high speed permanent-magnetic brushless DC motor

A permanent magnet brushless DC, control system technology, applied in the field of excitation or armature current control, electronic commutator, etc., can solve the problem of low steady speed accuracy and achieve the effect of high steady state accuracy

Inactive Publication Date: 2007-05-23
BEIHANG UNIV
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The technical problem solved by the present invention is: to overcome the deficiency of low speed stabilization accuracy in the prior art, and to provide a phase-locked speed stabilization control system for high-speed permanent magnet brushless DC motors used in magnetic levitation control torque gyroscopes

Method used

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  • A phase-lock steady speed control system of high speed permanent-magnetic brushless DC motor
  • A phase-lock steady speed control system of high speed permanent-magnetic brushless DC motor
  • A phase-lock steady speed control system of high speed permanent-magnetic brushless DC motor

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Embodiment Construction

[0015] As shown in Fig. 1, the present invention is made up of phase-locked loop speed controller 1, digital low-pass filter 2, power amplifier 3, permanent magnet brushless DC motor 4, Hall rotor position sensor 5 realized by using digital signal processor DSP, During the steady speed process of the motor, the phase-locked loop speed controller 1 provides the output control signal to the digital low-pass filter 2, and the output signal after filtering high-frequency noise is used as the input signal of the power amplifier 3, and the power amplifier 3 is controlled by the converter Drive and adjust the speed of the permanent magnet brushless DC motor 4 to the logic and PWM drive signals. During the steady speed process of the permanent magnet brushless DC motor 4, the position signal and the rotational speed signal output by the Hall effect rotor position sensor 5 are respectively used It is used for commutation and provides speed feedback for the phase-locked loop speed contro...

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Abstract

The invention relates to a high-speed permanent-magnetic non-brush direct-current motor phase-lock stable controlling system, wherein it is formed by phase-lock speed controller, digit low-pass filter, power amplifier, permanent-magnetic non-brush direct-current motor, and Hall-effect rotor position sensor. When the feedback signal of motor speed and the reference frequency signal are synchronous, the stable accuracy can reach 0.02-0.1%. And the invention uses low-accuracy sensor to obtain rotation speed feedback.

Description

technical field [0001] The invention relates to a high-speed permanent-magnet brushless DC motor phase-locked and stable-speed control system, which is used to realize high-precision and high-stability attitude control of large spacecraft such as satellites and space stations. Background technique [0002] The high-precision and high-stability attitude control technology of large spacecraft is one of the five major technical bottlenecks that need to be broken through in spacecraft systems and control technology. Magnetic levitation control torque gyroscope, as the actuator of spacecraft attitude control, has the ability of large output torque, good linearity of control characteristics, strong anti-interference and fast response speed, etc., and has been widely used in the world , and has become the preferred actuator for long-life large spacecraft. [0003] The control moment gyro system generates the required control moment by controlling the rotational speed of the rotor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P7/28H02P6/16
Inventor 房建成王志强刘刚李建科刘虎孙津济
Owner BEIHANG UNIV
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