无锁存功能脉冲计数器的改进读取方法

在电机伺服控制系统中,需要一个脉冲计数器对电机码盘输出的脉冲进行计数。但是如果脉冲计数器没有数据锁存功能,单片机读出的数值可能不准确,进而影响伺服控制系统的性能。针对没有锁存功能的脉冲计数器,提出了一种改进的读取方法,有效的避免了在读取过程中由于计数器进位或借位造成的读数偏差。

We need a pulse counter to take count of the number of puls e from photoelectric encoder in the motor control system. If the pulse counter has no latch function, the data read from the pulse counter maybe wrong, and the pe rformance of control system will deteriorate. This paper brings forward an impro ved method to read the data from the pulse counter, which get over effectively t he data error when MCU reads the pulse counter while carrying or borrowing.

国家863计划(2001AA422170)资助项目