Furnace temperature control by self-tuning control theory

Abstract

The rapid progress of micro-precessing techniques enables us to simulate the complex system by using the micro-computer. In this paper, the adaptive temperature control of a furnace is considered based on the multi-variable self-tuning control(STC) theory.The main reason to adopt the multi-variable STC algorithm is that the measurement data looks like random signal and the control system can be modelled as minimum-phase. The control input has been determined by using the multi-variable STC method in the microcomputer. Awrdmg to the control input, sohd state relays(SSFb) are controlled such that the desired power can be supplied. The experimental results are illustrated to show the effectiveness of the present algorithm compared with the results using, PID control methods by Ziegler-Nichols and conventional PID controller.