Magnetic suspension bearing control system and magnetic suspension bearing

A magnetic suspension bearing and control system technology, applied in the field of magnetic suspension, to increase the system response bandwidth, solve the contradiction between signal-to-noise ratio and dynamic response performance, and improve the response speed
CN112240346AActive Publication Date: 2021-01-19TIANJIN EMAGING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN EMAGING TECH
Publication Date
2021-01-19

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Abstract

The invention provides a magnetic suspension bearing control system and a magnetic suspension bearing, and relates to the technical field of magnetic suspension. The magnetic suspension bearing control system comprises a processor, a synchronization signal generation module, a displacement signal conversion circuit, a post-processing circuit, an A / D conversion module, a pulse width modulation module, a frequency division circuit, a synchronization module and a power amplifier. Under the common effect of all the elements, The A / D conversion module and the power amplifier are synchronized through the synchronization signal sent by the synchronization module, the impact current and impact voltage interference caused by a device switch in the power amplifier are effectively avoided, the response bandwidth of the system can be increased, the response speed is increased, and the contradiction between the signal-to-noise ratio and the dynamic response performance is effectively solved.
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Description

technical field

[0001] The invention relates to the technical field of magnetic suspension, in particular to a magnetic suspension bearing control system and a magnetic suspension bearing. Background technique

[0002] In order to make the structure of the existing magnetic bearing compact, and to make the position of the displacement signal and the force of the magnetic bearing as close as possible, the displacement sensor is usually installed at a position close to the electromagnet coil. It is easy to interfere with the sensor signal. In order to reduce electromagnetic interference and ensure a high signal-to-noise ratio, it is usually necessary to low-pass filter the sensor signal. In order to obtain smaller noise, the low-pass filter needs to use a higher order and a lower cut-off frequency. This method introduces The large delay reduces the dynamic performance of the magnetic suspension bearing; on the contrary, in order to obtain better dynamic performance, a low-pas...

Claims

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