地下活套可逆计数器的改进

MODIFICATION OF UNDERGROUND LOOP REVERSIBLE COUNTER

针对该厂引进的Φ114mm焊管生产线地下活套在带钢往复振荡运行中，数字控制器发生计数偏差问题，分析了计数器的工作原理。增加计数脉冲限制电路以滤除无效计数脉冲，可消除计数误差，改善可逆计数器的运行效果。

Following the problem with the digital controller of the underground loop of the works' imported Φ114mm welded-pipe line that counting deviation occurred in the reciprocating vibration of the strip, the author analyses working theory of the said counter. It is concluded that the said counting deviation can be eliminated and the counter's operation effectiveness improved by means of adding counting pulse restricting circuits to filter off the ineffective counting pules.