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High-precision low-power consumption magnetic suspension control-moment gyro frame servo system digital control apparatus

A technology for controlling torque gyroscopes and servo systems. It is applied in general control systems, control/regulation systems, and program control. It can solve the problems of insufficient operation speed and control accuracy, and improve the system's anti-interference ability, strong functions, and high performance. The effect of improving arithmetic precision

Inactive Publication Date: 2007-03-21
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

However, the current digital control devices for servo systems all use single-chip microcomputer control systems or DSP control systems, and their calculation speed and control accuracy cannot fully meet the requirements of magnetic levitation control torque gyro frame servo systems.

Method used

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  • High-precision low-power consumption magnetic suspension control-moment gyro frame servo system digital control apparatus
  • High-precision low-power consumption magnetic suspension control-moment gyro frame servo system digital control apparatus
  • High-precision low-power consumption magnetic suspension control-moment gyro frame servo system digital control apparatus

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Embodiment Construction

[0025] As shown in Figures 1 and 2, the present invention includes FPGA module 6, drive and power amplification module 2, communication module 5, current sensor 10, tachometer motor 11, A / D conversion module 9, angular position sensor 8 and angular position sensor interface 7 composition. The winding current of the frame servo motor is measured by the current sensor circuit 6. After being converted into digital quantities by the bias circuit of the A / D conversion module, the filter circuit 9 and the A / D conversion circuit, it enters the FPGA system and passes through the current loop in the Nios processor. The controller forms a current loop closed loop. The angular velocity of the frame servo motor forms an analog voltage through the rate sensor, and is converted into a digital value by the bias circuit, filter circuit and A / D conversion circuit 9 of the A / D conversion module, and then enters the FPGA system and passes through the speed loop controller in the Nios processor ...

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Abstract

This invention discloses a kind of numerical control device which consists of CPU module, switch module, power amplification module, and communication module. It could control Magnetic Suspended CMG servo system with high degree of accuracy. Data from the servo-actuator such as current, rotate speed and position signal was obtained by interface circuit and transported to CPU module; controlled quantity was created by operation to modulate the PWM; PWM with certain duty ratio was isolated and transported to the power amplification module to drive electric engine. Whole numeralization, integration, and high degree of accuracy control in CMG servosystem was realized in this invention.

Description

technical field [0001] The invention relates to a high-precision and low-power consumption magnetic suspension control torque gyro frame servo system digital control device, which is used for high-precision control of the magnetic suspension control torque gyro frame servo system, and is especially suitable for high-precision, low-power consumption precision spacecraft control execution mechanism. Background technique [0002] The control moment gyroscope is an important attitude control actuator on large spacecraft and space stations. Compared with the traditional mechanical control moment gyroscope, the magnetic levitation control moment gyroscope has the advantages of large torque output and low vibration, so it has a wide range of applications on high-precision large satellites prospect. In addition, the magnetic bearing support has no friction, which avoids the wear of the mechanical bearing itself due to friction. Its reliability depends on the reliability of the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 房建成李海涛于灵慧魏彤王宗省
Owner BEIHANG UNIV
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