As the state of a cement mill can not be directly observed,a discrete-time design of state observer for LPV predictive control for the load of cement mill is proposed. The gain of the observer is obtained though solving the cement's LMI; At the same time,the input of LPV predictive control of cement mill is gained by the observer of cement's mill load LMI and the feedback value of observer. At last,the error of cement mill load value eventually converges to zero. It is verified asymptotically stable through...