A device and method for measuring torque device coil quadrature error

Abstract

The invention discloses a device and method for measuring the quadrature error of the torquer coil, which comprises a plurality of torquer coils arranged in the outer circumferential direction of the torquer to be measured, the acquisition board is electrically connected with the torquer to be measured, and the acquisition board Collect the induced voltage value of the torquer coil, the acquisition board is electrically connected with the encoder, and is used to collect the shaft angle value of the excitation coil obtained by the encoder, and the excitation coil rotates inside the torquer to be measured. When the magnetic axis of a torquer coil of the torquer coincides, the induced voltage value of the torquer coil will have a peak value, and the angle value of the excitation coil axis corresponding to the peak value is read by the encoder, and the acquisition board acquires the encoder to read the axis angle of the excitation coil The value is sent to the main board to calculate the quadrature error value of the torquer coil.

Description

technical field [0001] The invention relates to the technical field of flexible gyroscopes, in particular to a device and method for measuring the quadrature error of a torquer coil. Background technique [0002] Due to the influence of the detection means, most of the existing detection methods for the torquer coil of the flexible gyroscope only include DC resistance, insulation resistance, withstand voltage and polarity. However, more and more applications of torquer coils for flexible gyroscopes indicate that when manufacturing high-precision gyroscopes, quantitative requirements must be put forward for the quadrature error of torquer coils for flexible gyroscopes. In Zhang Aiping, Li Jincheng's "Instrument Technology and In the journal paper of the 5th issue of "Sensor" in 2003, the development of the orthogonality error detection device for the torquer fixed coil assembly of the dynamic gyro tuner is disclosed. The motor with a stable speed is used to drive the permanen...

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Problems solved by technology

[0003] However, the alternating magnetic field in the above-mentioned journal papers is generated by a high-speed rotating permanent magnet. In order to achieve a certain measurement accuracy, the rotational speed stability of the permanent magnet must be within 0.3%, which puts strict requirements on the motor itself and its control circuit. , at the same time, it is difficult for the hardware of the device to achieve the speed stability of the permanent magnet; secondly, in the above-mentioned journal papers, the moment of the peak value of the induced voltage is recorded, the number of times of its occurrence is counted, and finally the data processing is performed to obtain the value of each coil. position, if the above effects are to be achieved, the use of software and hardware is more complicated, and at the same time, the inspection time is also prolonged, resulting in a waste of manpower and material resources

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