Abstract:

Due to heavy calculation burden for solving Diophantine’s equation and inverse matrix，the traditional GPC （generalized predictive control）algorithm is unsuitable in some areas where both small system overshoot and fast track speed are required.In this paper，an improved generalized predictive control algorithm for fast restraining overshoot is proposed.Firstly，the calculation of inverse matrix is not necessary by softening coefficient matrix to obtain smoothing current input.Secondly，the next input increment is estimated by simple GPC.Finally，the current input is combined by next input increment in order to overcome potential overshoot.The simulation results show the effectiveness of the algorithm.