摘要
为了提高光电编码器的反馈精度和消除正交波形中的抖动,提出了一种基于复杂可编程逻辑器件且具有倍频鉴相和滤波功能的光电编码器测量系统。介绍了光电编码器测量原理,将系统划分为滤波鉴相、倍频、计数3个模块,并对这3个模块进行了电路设计和仿真。仿真结果表明,该设计方法能够满足高精度伺服电机正交编码的信号处理要求。
To improve the feedback precision of the photoelectric encoder and remove the disturbance of the rectangular waveform, a photoelectric encoder measuring system based on complex programmable logic device（CPLD） was offered, which had the ability of frequency multiplication and filtering. The photoelectric encoder measurement principle was introduced. The system was divided into three modules, including filtering phase, frequency and the counter. These three modules were designed and simulated. The simulation results show that the design methods meet signal processing requirements of high-precision servo motor orthogonal coding.
出处
《机电工程》
CAS
2009年第1期77-79,共3页
Journal of Mechanical & Electrical Engineering
基金
浙江省科技厅面上项目(2008C21106)
关键词
光电编码器
滤波鉴相
倍频
计数
复杂可编程逻辑器件
photoelectric encoder
filtering and phase demodulation
frequency multiplication
count
complex programmable logic device （ CPLD ）
