High-performance integrated magnetic suspension flywheel magnetic bearing digital controller

A digital control and magnetic bearing technology, applied in the direction of the magnetic attraction or thrust holding device, bearing, shaft and bearing, etc., can solve the problems of insufficient DSP floating-point computing ability and the unsatisfactory number of pulse width modulation signal channels, etc., to achieve The effect of meeting real-time requirements, realizing digitization and integration, and improving data processing capabilities

Inactive Publication Date: 2006-01-11
BEIHANG UNIV
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Problems solved by technology

[0005] The technology of the present invention solves the problem: to overcome the lack of floating-point computing capability of the existing Ti-based C2000 series DSP and the number of pulse width modulation signals provided cannot meet the requirements of PWM when each bridge arm

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  • High-performance integrated magnetic suspension flywheel magnetic bearing digital controller
  • High-performance integrated magnetic suspension flywheel magnetic bearing digital controller
  • High-performance integrated magnetic suspension flywheel magnetic bearing digital controller

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[0029] Such as figure 1 As shown, the hardware module of the present invention is mainly composed of interface circuit 14, displacement signal analog to digital conversion chip 12, current signal analog to digital conversion chip 19, FPGA module 7, DSP module 8, and power module 22. The interface circuit 14 Including speed signal interface circuit 13, displacement sensor interface circuit 17, current sensor interface circuit 18. The power module 22 includes high-speed optocoupler isolation circuit 4, pulse drive circuit 3, full-bridge transducer circuit 2, current sensor 24, and overcurrent protection Signal generation circuit 23, FPGA module 7 includes configuration chip 5, FPGA chip 6, DSP module 8 includes DSP chip 9, externally expanded Flash10, externally expanded RAM11, displacement sensor interface circuit 17 converts the displacement signal detected by displacement sensor 16 into displacement The 0V-5V range required by the signal analog-to-digital conversion chip 12, the...

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Abstract

An integrated magnetic suspension flywheel magnetic bearing digital control device includes an interface circuit, an A/D conversion chip, a FPGA module and a DSP module. The device obtains data of the magnetic bearing rotor displacement signals, circuit of the coil and rotating velocity, the DSP module generates a control volume in terms of a control algorithm and delivers it to the FPGA, which carries out PWM modulation based on the control volume and current signals to transfer its signal to a full-bridge energy conversion circuit to generate control current needed by the magnetic bearing coils to realize the active control to magnetic suspension flywheel magnetic bearing system.

Description

Technical field [0001] The invention relates to a high-performance, integrated magnetic bearing digital control device for a magnetic levitation flywheel, which is used for high-precision control of the magnetic bearing system of a magnetic levitation flywheel, and is especially suitable for applications such as high performance and high integration. The control device is also suitable for Control of other magnetic bearing systems using full bridge power conversion modules. Background technique [0002] The flywheel is the basic attitude control actuator on small and medium-sized satellites. Compared with the traditional mechanical bearing flywheel, the maglev flywheel has the advantage of active vibration control, so it has broad application prospects in high-precision satellites. In addition, the magnetic bearing has no friction, which avoids the wear of the mechanical bearing itself due to friction. Its reliability depends on the reliability of the electronic components o...

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Application Information

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IPC IPC(8): H02N15/00F16C32/04
Inventor 房建成刘虎刘刚田希晖樊亚洪
Owner BEIHANG UNIV
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