Abstract
Multiple model adaptive PID strategies are considered for a diversified small-quantity production issue of a temperature control system. The dynamics of the plant are different for each system change and also time varying. The system must also satisfy the mechanical conditions. This paper especially focuses on system changes for an extruder control system to verify the proposed method. For a wide range operation, the partition of plant parameters, design of the controller bank and model bank, and the control algorithm itself for the extruder control system were developed. The computer simulation and experiment have shown that MMAC can be successfully applied to the extruder despite uncertainty in the time delays, time constant, and gains.
