公开(公告)号：KR101468323B1

公开(公告)日：2014-12-02

申请号：KR1020130089183

申请日：2013-07-26

Applicant: 성균관대학교산학협력단

Inventor： 전재욱 ,  조성진 ,  후앙반홍

IPC: G01P3/44 ,  G01P3/487

CPC classification number: H04L1/0042 ,  G01D5/2448 ,  G01P3/487 ,  G01P3/489

Abstract: An output signal compensation device of a magnetic encoder of the present invention includes: a pre-compensator which obtains two phase-corrected waveforms in order to have a same phase through a trigonometric function calculation of waveforms separately normalizing a magnetic encoder (ME) output sine wave outputted from an ME and digital converted sine and cosine waves converted from an ME output cosine wave, and generates an input sine wave and an input cosine wave which have a same phase and a same amplitude by adjusting the phase-corrected waveforms to have the same amplitude; a phase detector which generates an error output signal in order to have information of a phase error between a phase of the input sine and cosine waves and a predicted phase of compensated sine and cosine waves; a loop filter which filters the error output signal using an active lead-lag filter which has a filter transfer function which is set by an attenuation factor and a unique frequency determined adaptively; a voltage control oscillator which generates a compensation sine wave and a compensation cosine wave which have a predicted phase based on the filtered error output signal; and a pulse generator which generates two output pulses in order to have a predetermined pulse level corresponding to a current phase index among multiple phase indexes segmented from a phase within a cycle of the compensation sine and cosine waves and have a phase difference of a 90 degree.

Abstract translation: 本发明的磁编码器的输出信号补偿装置包括：预补偿器，其通过三角函数计算获得两相相位校正波形，以分别对磁编码器（ME）输出正弦 从ME输出的波形和从ME输出余弦波转换的数字转换的正弦和余弦波，并且通过调整相位校正的波形来产生具有相同相位和相同幅度的输入正弦波和输入余弦波，以具有 幅度相同 相位检测器，其产生误差输出信号，以便具有输入正弦和余弦波的相位与补偿的正弦和余弦波的预测相位之间的相位误差的信息; 使用具有滤波器传递函数的有源超前延迟滤波器对误差输出信号进行滤波的环路滤波器，该滤波器传递函数由衰减因子和自适应确定的唯一频率设定; 电压控制振荡器，其产生补偿正弦波和补偿余弦波，所述补偿余弦波具有基于滤波后的误差输出信号的预测相位; 以及脉冲发生器，其产生两个输出脉冲，以便具有对应于在补偿正弦和余弦波的周期内的相位分割的多个相位索引中的当前相位索引的预定脉冲电平，并且具有90度的相位差 。