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Magnetic bearing control system of accurately compensating magnetic suspension control torque gyroscope support rigidity

A technology for controlling torque gyroscope and supporting stiffness, applied in the direction of holding devices and electrical components using magnetic attraction or thrust, it can solve problems such as disturbance, system instability, and poor compensation accuracy, so as to eliminate compensation errors and improve torque output. Accuracy and response speed, overcoming the effect of poor accuracy

Inactive Publication Date: 2005-12-21
BEIHANG UNIV
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Problems solved by technology

However, on the one hand, the actual system usually adopts PID control, and the differential coefficient is not allowed to be very large due to the restriction of the noise level. If the stiffness is too high, the system damping will be reduced, resulting in system instability; on the other hand, there is a certain Even if the high stiffness of fixed parameters is still in the stable range, it is difficult to adapt to the changing frame angular rate and cause disturbance, so the compensation accuracy is poor

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  • Magnetic bearing control system of accurately compensating magnetic suspension control torque gyroscope support rigidity
  • Magnetic bearing control system of accurately compensating magnetic suspension control torque gyroscope support rigidity
  • Magnetic bearing control system of accurately compensating magnetic suspension control torque gyroscope support rigidity

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Embodiment Construction

[0014] Such as figure 1 As shown, the present invention mainly includes a flywheel body 2, a magnetic bearing power amplifier 3, and a magnetic bearing controller 5, wherein the flywheel body 2 is composed of a magnetic bearing electromagnet 6, a rotor 7, a displacement sensor 8 and a rotor drive system. For CMG A frame drive system is also required as a device to drive the frame to achieve a given angular rate, and at the same time output the frame angular rate signal required by the magnetic levitation control system; for the flywheel body 2, a rotor motor drive system is also required to drive the rotor 7. The device to make it reach the rated speed, and at the same time output the rotor speed signal required by the magnetic levitation control system. The rotor displacement signal is connected to the controller 5, and the control signal is output after calculation. The frame angular rate signal, rotor speed signal and rotor displacement signal are connected to the adaptive ...

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Abstract

The disclosed control system includes flywheel body, power amplifier for magnetic bearing, controller for magnetic bearing and adaptive compensator. Through collecting signals including angular rate of frame, speed of rotor, and displacement of rotor, the adaptive compensator carries out adaptive compensation calculation. Sum of calculated compensation quantity and the output of controller for magnetic bearing is connected to the power amplifier for magnetic bearing in order to eliminate disturbing moment on rotor of magnetic suspension caused by moving frame. The invention lowers displacement of rotor caused by rotation of frame, raises response speed and precision of angular rate of frame, and improves response speed and precision of moment output of magnetic suspension control moment.

Description

Technical field [0001] The invention relates to a magnetic suspension control system, which can be used to accurately compensate the stiffness of the magnetic bearing when the frame of the magnetic suspension control moment gyroscope (Control Moment Gyroscope-CMG) rotates. Background technique [0002] Control Moment Gyroscope (CMG) is a key actuator necessary for attitude control of large spacecraft such as space station. The CMG consists of a high-speed rotor system and a frame servo system. The frame system forces the high-speed rotor to precess, and the output gyro torque is used to adjust the attitude of the spacecraft. The high-speed rotor support is a key part of CMG, and there are usually two types of mechanical ball bearing support and magnetic bearing support. The corresponding CMG is called mechanical CMG and magnetic levitation CMG. Existing CMGs all adopt mechanical supports, and the friction and wear in the mechanical supports will affect the reliability and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N15/00
Inventor 魏彤房建成陈冬于灵慧张鹏波
Owner BEIHANG UNIV
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