基于PLC的水下切割装置速度控制系统研制

Design of Speed Control System of Cutting Equipment under Water

水下切割装置在进行切割作业时,在水面不能直接获知其运行状态。原有系统用液压马达的流量对水下切割装置的运行速度进行估计,误差较大,响应速度慢。为解决速度检测精度等问题,对原有系统进行改造,采用深水码盘实现切割速度检测,使用比例流量阀调整液压马达流量,实现转速的实时精确控制。基于可编程逻辑控制器实现了水下切割装置的速度控制。

The working station can not be obtained directly while the cutting equipment operates under water. In original opera-tor,the speed of cutting operations was estimated by the flow quantity of hydraulic motor. Obviously it has a high distortion and low re-sponse speed. To improve the precision of speed detection,a deepwater encoder,which was used to detect the speed,and a propor-tional flow valve,which was used to adjust the traffic speed of hydraulic motor,were employed to achieve real-time and accurate con-trol of speed. The control strategy proposed was realized by using a programmable logic controller.