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The Weir Position Control System Design by Two-Degree-of-Feeedom Controller

The weir to regulate water level in a tide generation tank is above and below carried by two screw jacks which are mounted on right and left of weir itself. In this case, a movement difference between right jack and left jack causes unbalance, chattering and jamming of the weir. And then the weir can not be movable. In this study, a synchronous control system is developed to take accurate and quick equilibrium of the weir. The control system based on master-slave methodology consists of I-PD and two-degrees-of-freedom controller. The I-PD controller is designed in order that the left screw jack may follow the reference signal without overshoot and input saturation. And the two-degrees-of-freedom controller is designed to remove movement difference generated between right jack and left jack. The simulation results show that the weir can be smoothly transferred in equilibrium state by two screw jacks.