桥式起重机纠偏控制策略的研究

Research on the Correctional Deflection Control System of Bridge Crane

桥式起重机运行时存在的啃轨现象极大地影响了桥式起重机的安全性和工作效率,造成巨大的经济损失,制约了起重机自动化程度的进一步提高。本文在对目前治理啃轨问题的纠偏方法进行比较和分析之后,详细地研究了桥式起重机在纠偏时两侧驱动电动机转速不同的运动状态,得到了在此运动状态下的数学模型,并以此为基础提出了一种可同时纠正桥式起重机位置偏差和方向偏差的变频调速控制策略,最后通过MATLAB下的仿真试验验证了该策略的有效性。

Skew traveling in bridge crane greatly influences the safety and efficiency of bridge crane,which causes gigantic economic losses,and is an obstacle to further improvement of the automation of bridge crane.The paper compared and analyzed various solutions to skew traveling,and then studied the motion of bridge crane when the rotating speed of the motor of two sides is different.Based on that,the paper put forward a frequency conversion control method which can both correct the position error and the direction error of the bridge crane.At last,the result of the simulation in MATLAB shows that the method is effective.