This paper proposes a new predictive control algorithm for system equipment with smooth input requirements. The algorithm introduces a softening coefficient matrix to constrain the input increment, avoiding the calculation of matrix inversion, greatly reducing the amount of calculation, ensuring the rapidity of the system, and retaining the basic characteristics of generalized predictive control. Secondly, the control algorithm improves the singleness of the traditional generalized predictive control algorithm, fully utilizes the compensation effect of the prediction information for weighted averaging, and effectively suppresses the occurrence of overshoot. The simulation test of the pressure system of the extruder was carried out, and the results verified the effectiveness of the algorithm. Key words Generalized predictive control; A fast speed; Non-overshoot; inverse matrix Abstract : Considering some industry system equipments are ordered smoothing input signalsagainst some sharp signals damages equipments, A kind of new control algorithm is presented, which not only makes input increase constrainted by softing coefficient matrix to obtain smoothing input, overcoming the disadvantage of calculating inverse matrix to increase responding speed of the system, but also makes full use of compensations of predictive information to form weighted average to restrain overshoot. The simulation results have proved the validity of the algorithm by comparative study for extruder pressure system.Key words Generalized predictive control; A fast speed; Non-overshoot; inverse matrix
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