起重机双马达同步控制策略分析

Analysis of crane with double motor synchronous control strategy

大型起重机常采用两个马达共同提升负载,往往存在同步误差,致使其控制精度有所下降。为解决这个问题,笔者在对起重机的液压起升系统研究的基础上,提出了一种基于模糊PID的控制策略,并与其它控制方法相对比。研究结果表明,所采用的方法能有效减少两个马达的同步误差,提高了起重机的控制精度,有一定的参考价值。

In order to ensure work safety ,large cranes generally use two motors together to upgrade the load ,so often there is a synchronization error ,control accuracy is affected .To address this issue ,the paper crane hydraulic lifting system to study proposed control strategy based on fuzzy PID′s .T he results show that the method used to effectively reduce the syn‐chronization error between the two motors to improve the control precision crane ,a certaln reference value .