Various PID controller tuning for air temperature oven system

Temperature controllers are needed in any situation requiring a given temperature be kept stable. This can be in a situation where an object is required to be heated, cooled or both and to remain at the desired temperature, regardless of the changing environment around it. The purpose of this study is to compare the performance of three controller tuning methods for an air oven temperature control system. The controller parameters, response rate and dead time are determined by using Reformulated Tangent Method in open- loop test. Then, the optimum Proportional-Integral-Derivative value are determined by using Ziegler-Nichols, Chien et al. and Takahashi tuning methods. The performance of each tuning rule is analyzed in the closed-loop characteristics such as percent overshoot, setting time, rise time and integral absolute error. The fine tuning technique was implemented to improve the result which the value of Proportional-Integral-Derivative gains were tuned. The result presented that the Ziegler-Nichols tuning method give better performance compared to Chien et al. and Takahashi tuning methods.