Modeling and speed-control for the guid disk in a rotary piercer
斜轧穿孔机导盘转速的建模与控制

The guiding disc model is developed by analyzing the hydraulic system which drives the Diescher guiding disc. The load torque which is an important parameter in the model is predicted by the soft measure method. A feed-forward control algorithm is used to reject the load torque disturbance. An inferential control algorithm is also used to compensate the error caused by the soft measure method. The compound control algorithm combines the feed-forward and inferential control algorithm for controlling the speed of the guiding disc. Finally, the accuracy, robustness and fast response of the control system is demonstrated by the simulation.