Tuning of Analog Controllers for Superheated Steam Temperature System using Simulated Annealing Algorithm

摘要

This paper explains the tuning of Proportional Integral controller (PI) for Superheated SteamTemperature System using Simulated Annealing Algorithm (SA) based on Integral Square Error (ISE) as the objective function. The analog controllers have a wide range of applications in Industrial Automation and Control. The controller parameters need to be tuned well to achieve desired response. The fifth order model of Superheated SteamTemperature System is taken for study. Most of the tuning algorithms are based on First Order plusTime Delay models which is given by G(s) = Ke ~(-τs)/(Ts+1). If the plant is not approximated well to FOPTD model, good controllers may not be designed using existing algorithms. SA is a numerical optimization technique based on the principles of thermodynamics. To tune the PI controller using SA, it does not require any FOPTD model. Hence the analog PI controller is tuned using SA algorithm for superheated steam temperature system and the Integral Square Error is compared with the PI controller tuned using Genetic Algorithm (GA) for Servo and Regulatory problem.