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
CN1968002AInactive Publication Date: 2007-05-23BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2007-05-23
Estimated Expiration
Not applicable · inactive patent

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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.
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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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