Full digital driving controller of permanent magnetic linear voice coil motor used for direct driving valve

A drive controller and digital controller technology, applied in digital control, motor control, control using feedback, etc., can solve the problems of temperature drift, inconvenient debugging, and inability to directly realize the interface, so as to improve reliability, data The transmission rate is fast and the effect of electrical isolation is realized
CN101576745BInactive Publication Date: 2011-04-13BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2011-04-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a full digital driving controller of a permanent magnetic linear voice coil motor used for a direct driving valve, consisting of three parts: a digital controller, a power circuit and a signal detection circuit; the digital controller circuit comprises a 32-bit floating point DSP, a field programmable logic device FPGA and an external Flash ROM; the power circuit comprisesa high-speed optical coupling isolation circuit, and an H-bridge power main circuit consisting of intelligent power modules IPM; the signal detection circuit comprises an A / D converter, a multi-pathanalogue switch, a Hall current sensor used for detecting the moving coil winding current, a non-contact eddy current displacement sensor used for detecting the position of the moving coil and an amplification and active power filter circuit for analogue signals. The full digital driving controller of the permanent magnetic linear voice coil motor used for the direct driving valve has the advantages of high integration, good extensibility, high reliability, high frequency response and high precision.
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Description

technical field

[0001] The invention belongs to the field of motor automatic control, in particular to an all-digital drive controller for a permanent magnet linear voice coil motor directly driving a valve. Background technique

[0002] Permanent magnet linear voice coil motor has the advantages of high acceleration, high speed, small size, good force characteristics, and convenient control. It is used in motion systems that require high acceleration, high frequency response, fast and high-precision positioning. Therefore, in recent years, almost all direct drive servo valves with high frequency response and large flow rate above hundreds of hertz adopt the direct drive structure of linear voice coil motor. To achieve these excellent performances, higher requirements are put forward for the calculation accuracy and calculation speed of the drive controller of the permanent magnet linear voice coil motor. At the same time, in industrial applications, the drive controller is...

Claims

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