QFT Synchronous Control System of Ring Gate for Hydraulic Turbine

The nonlinear dynamic mathematical model was proposed based on the hydrodynamic force analysis of ring gate by CFD simulation in order to satisfy the need for multi-cylinder displacement and velocity control. According to ring gate motion style, QFT synchronous control mode was made into use in the ring gate opening and closing process. It shows that the controller with use of QFT acquires the requirement of trace ability, robust stability and input disturbance restraint ability, which keeps from unfavorable influence of non-linear and uncertain factors in the opening and closing process of ring gate located in hydropower plant.