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A Demodulation Technique for Spindle Rotor Position Detection With Resolver

机译：旋转变压器转子位置检测的解调技术

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摘要

This paper presents a demodulation technique for amplitude modulated signals from a resolver based on amplitude detection of a sinusoidal waveform by numerical integration. The proposed technique performs synchronous integration on output signals of the resolver. The integration period is determined from zero crossing detection of the same output signals. The actual envelopes of the signal waveforms are obtained by utilizing the phase relationship of the integrated waveforms with the delayed carrier signal. Due to integration, the noise and disturbance effects are averaged out and the achievable accuracy is improved without applying filters. The method is developed from exploration of detecting HDD spindle rotor position in high resolution. The effectiveness of the proposed technique is demonstrated with the simulations and compared to the other methods. Experimental results are also provided to support the proposed method.
机译：本文提出了一种解调器的调幅信号解调技术，该技术基于通过数值积分对正弦波形进行幅度检测的技术。所提出的技术对旋转变压器的输出信号执行同步积分。积分周期由相同输出信号的过零检测确定。通过利用积分波形与延迟载波信号的相位关系来获得信号波形的实际包络。由于集成，噪声和干扰效应得以平均，无需使用滤波器即可提高可达到的精度。该方法是从探索以高分辨率检测HDD主轴转子位置而开发的。仿真结果证明了该技术的有效性，并与其他方法进行了比较。实验结果也提供支持该方法。

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