“…In order to solve the problem of time-varying parameters and disturbance in the system, many effective methods such as sliding mode control (12,13) , robust control (14,15) and intelligent control (16)(17)(18) were proposed. Subsequently, in order to solve the problems of pure time delay, time-varying parameters and disturbance in the system, many effective methods, such as sliding-mode Smith predictor method (19,20) , sliding-mode predictive control algorithm (21,22) , robust Smith predictive method (23,24) , robust predictive control algorithm (25,26) , Smith-fuzzy predictive control algorithm (27,28) and neural Smith predictive method (29,30) had been formed by combining sliding-mode control, robust control and intelligent control with Smith predictor method, and predictive algorithm.…”