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High-performance integrated magnetic suspension flywheel magnetic bearing digital controller

A digital control, magnetic bearing technology, applied in the direction of holding devices, bearings, shafts and bearings using magnetic attraction or thrust, can solve the problems such as the insufficiency of the number of pulse width modulation signal paths and the lack of DSP floating-point computing capability, and achieve Meet real-time requirements, realize digitization and integration, and ensure the effect of system delay

Inactive Publication Date: 2007-05-09
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 of the digital switching power amplifier of the magnetic levitation flywheel magnetic bearing system is independently controlled. The shortcomings of the number of channels required to provide a highly integrated magnetic levitation flywheel digital control device

Method used

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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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Embodiment Construction

[0027] As shown in Figure 1, the hardware module of the present invention is mainly made up 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, wherein interface circuit 14 Including speed signal interface circuit 13, displacement sensor interface circuit 17, current sensor interface circuit 18, power module 22 includes high-speed optocoupler isolation circuit 4, pulse drive circuit 3, full bridge transducer circuit 2, current sensor 24, overcurrent protection Signal generating circuit 23; FPGA module 7 includes configuration chip 5, FPGA chip 6, wherein FPGA chip 6 adopts XC3S chip as the processor of power module 22 control algorithms, and FPGA module 7 and DSP module 8 work in parallel; DSP module 8 includes DSP Chip 9, externally expanded Flash10, externally expanded RAM11; the displacement sensor interface circuit 17 converts the displacement...

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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 an integrated magnetic suspension flywheel magnetic bearing digital control device, which is used for high-precision control of the magnetic suspension flywheel magnetic bearing system, and is especially suitable for applications such as high performance and high integration. Control of a magnetic bearing system for a bridge power conversion module. 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 of the control system, so it has a longer service life than the mechanical beari...

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Application Information

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Patent Type & Authority Patents(China)
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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