【摘要】 本文介绍了一种基于FPGA的增量式光电角度编码器信号处理系统,利用光电角度编码器输出信号的状态转换和电平保持时间,设计了有限状态机实现了系统的测量辨向,通过PCI总线与上位机进行通讯。采用XILINX公司的Spartan2E系列XC2S50E型FGPA进行了设计验证和室内试验,并对试验结果的精度进行了分析。结果表明该方案在保证测量精度的前提下,可以有效滤除噪声干扰和消除抖动,增强了系统的干扰抑制和容错能力,可移植性强,便于系统升级。更多还原

【Abstract】 A kind of angle measurement system based on FPGA is introduced, a finite-state machine for direction identify and meaurement based on state-switch and the level keep-time of the Photoelectric Encoder signal is designed.The system communicate with computer by PCI bus.Laboratory experiment and design is complemented based on chip Spartan2E-XC2S50E of XILINX company, and the experimental result accuracy is analyzed.The result indicates that the system can effectively eliminate noise and dither.The capability of restraining disturbing is improved.It is heritable and upgraded.更多还原