正弦输出磁编码器在线分步校正方法

摘要

磁编码信号往往存在直流偏置、幅值不等和相位偏移等问题，需要对其进行校正。为解决Hydemann校正方法参数选择困难的问题，提出了一种在线分步校正方法。采用数字峰峰值检测算法，获取磁编码器输出信号的幅度及直流偏置；采用简化的Hydemann方法获取相移信息。试验结果表明，该算法响应速度快、校正精度高、参数选择容易、便于计算机的实现，具有一定的工程应用价值。%Very often, the magnetic encoding signals are featuring with DC offset, unequal amplitudes, and phase shift, etc. , so it is necessary to correct the signals. In order to solve the problem of Hydemann correction method about difficult to select parameters, an online step▬to▬step correction method is proposed. By adopting digital peak▬peak value detection algorithm, the amplitude and DC offset of the output signals of magnetic encoder are obtained, and the phase shift information is got by adopting simplified Hydemann method. The result of tests shows that the algorithm features fast response, high correction accuracy, easy to select parameters, and convenient to be implemented by computer, it possesses certain engineering applicable values.