SBHS: Some control investigations

The main motive of this paper is to implement, analyze and compare few standard closed loops PID tuning methods and to develop auto tuning for single board heater system (SBHS) using relay feedback method. For system identification, step test method is used to find out system parameters. Widely accepted PID controller is used to control the temperature of the system with the PID controller parameter values obtained from Zeigler Nichol´s tuning method. Better to this conventional ZN, Relay Feedback tuning based PID controller is used, whose main idea was proposed by Amstrom-Hagglund in 1984. This paper also includes implementation of LQR(linear quadratic regulator) controller over linear system i.e. SBHS to reject disturbances with set point tracking, number of analysis and results has been taken for both LQR and PID controller.