Research Of Predictive Control On Structural Vibration Control

China is one of the countries with serious earthquake disaster in the world. As to construction structural engineering, making its structure not or reduce the destruction thus reduce the earthquake disaster is vital significance. The ship lift is the important tool promoting the passing vessel in the large-scale water control pivot project, compare with multistage ship-strobe, which can make the time of vessel passing dam greatly reduce. The structure of ship lift is one kind of high supple structure, when affecting by earthquake, its underpants barrel side of structure moves in a big way, but the crown monolayer workshop column side moves to be very small, such enormous rigidity sudden change causes the ship lift crown workshop intense whipping effect. Therefore, reducing its whipping effect becomes an extremely important research topic at present.Predictive control is a kind of new computer control method in the late 1970s, it takes the system response predictive model as the foundation, uses the ideas of receding horizon and feedback proofread, to optimize the objective function and gain optimal control force, which could minimize the difference between the real output and the expected output. At present, the predictive control has been already getting more and more extensive application because of its characteristics.The development and status of Structural vibration control and Predictive Control is introduced and analyzed the profits of its characteristic in this dissertation, structural model and model predictive control (MPC ) algorithm are studied the that was first implemented for the structural vibration control of ship lift under earthquake excitation. Based on analyzing structural motion equation and the state space form equation of the earthquake-excited ship-lift's structural model, predictive model and control objective functions are defined and the MPC system of the ship-lift is set up. It can greatly reduce earthquake response of the tall building and mitigation effect is very available.