RVDT (rotary variable differential transformer) signal simulation circuit, method and device

Abstract

The invention provides an RVDT (rotary variable differential transformer) signal simulation circuit, method and device. The circuit comprises a signal acquisition circuit, a controller and a signal output circuit, wherein the signal acquisition circuit is used for acquiring a simulation excitation signal input by a sensor primary coil of an RVDT, converting the simulation excitation signal into a digital excitation signal and transmitting the digital excitation signal to the controller; the controller is used for determining a current wiring mode of the RVDT, determining a differential signal and excitation signal function relation corresponding to the current wiring mode of the RVDT from differential signal and excitation signal function relations corresponding to preset wiring modes of the RVDT, calculating a digital differential signal corresponding to the digital excitation signal according to the determined function relation and transmitting the digital differential signal to a signal output circuit; the signal output circuit is used for converting the digital differential signal into a simulation differential signal. Signal simulation of the RVDT in different wiring modes can be compatible at a lower cost conveniently.

Description

technical field [0001] The invention relates to the technical field of signal simulation, in particular to an RVDT (Rotary Variable Differential Transformer, rotary variable differential transformer) signal simulation circuit, method and device. Background technique [0002] The Chinese interpretation of RVDT is a rotary variable differential transformer, which is a kind of angular displacement sensor. RVDT can convert mechanical displacement signal into electrical signal output; RVDT can be applied to ball valve position, hydraulic pump, forklift, robot, fan and other equipment Transmission and feedback control, especially in aircraft and other spacecraft has a wide range of applications. Therefore, it is of great significance to simulate the RVDT signal, especially in the application of aircraft and other spacecraft, the RVDT signal simulation can simulate the real RVDT sensor signal in the airborne system to verify the correctness of the ground test equipment and assist t...

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Problems solved by technology

[0004] At present, RVDT signal simulation is mainly realized through the combination of multiplier, adder, subtractor and other simulation hardware circuits; For RVDT in wiring mode, the functional relationship between the differential signal output by analog and the excitation signal input is different, and a set of simulation hardware circuits can only realize signal simulation in one wiring mode of RVDT, and cannot be used in a set of simulation hardware circuits. In order to realize the signal simulation of RVDT with multiple wiring modes; in order to realize the signal simulation of RVDT with multiple wiring modes, it is necessary to set up corresponding simulation hardware circuits for RVDTs with different wiring modes, which makes the simulation cost higher and the simulation implementation more difficult. cumbersome

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