摘要
介绍了一种利用VHDL语言描述的Mealy型状态机对光栅莫尔条纹进行8细分和辨向的方法。该方法通过状态机对经过预处理电路的光栅信号变化状态进行判断,从而输出计数脉冲和方向信号。通过一种改进的计数方法,避免了尖峰干扰脉冲对计数值的影响,提高了细分和计数精度。
This article describes a way of Moore stripes subdivision and the differentiation of direction based on the Mealy state machine and described by the VHDL language. By this method, the state machine judges the change of the grating signal of the pre-processed circuit and then proved counting method the effect of the peak interference division and counting is improved. outputs the count pulse and direction signal. By an im- pulse on the count is avoided and the accuracy of the sub-
出处
《电子科技》
2012年第8期67-69,共3页
Electronic Science and Technology
关键词
莫尔条纹
细分和辨向
VHDL
Mealy状态机
脉冲干扰
moore stripes
subdivide with differentiation toward
VHDL
Mealy state machine
pulse inter-ference
