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Phase Shift Calibration Method in Optical Sinusoidal Encoder Signals Applied to Servo Track Writer

机译:正弦编码器信号在伺服轨迹记录器中的相移校准方法

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Abstract: In this paper, an ultra high precision calibration method of optical sinusoidal encoder signals in spiral servo track writing is proposed to improve position (velocity) regulation in the constant velocity region. The proposed method has been aimed toward non-ideal signal calibration for the imperfect components existing sinusoidal encoders and it applies a digital encoder calibration using a fictitious cosine function. The fictitious cosine function is used for finding phase shift between sine and cosine signals. The proposed method is validated by the experimental implementation, showing noticeable improvement in the position (velocity) error signal. Tracking performance in position error signals is improved up to 40 [%] with a positioner.
机译:摘要:本文提出了一种超高精度的光学正弦编码器信号校准方法,用于螺旋伺服磁道写入中,以改善恒速区域的位置(速度)调节。所提出的方法旨在针对现有正弦编码器中不完美组件的非理想信号校准,并且它使用虚拟余弦函数应用数字编码器校准。虚拟余弦函数用于查找正弦和余弦信号之间的相移。实验方法验证了所提方法的有效性,表明位置(速度)误差信号得到了明显改善。使用定位器可以将位置误差信号的跟踪性能提高多达40 [%]。

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