2019 : Comparison on PID controller performance for multivariable system between de-tuned method and optimization method

Dr.Ir. Ali Musyafa M.Sc.
Hendra Cordova ST.,MT.
Totok Ruki Biyanto S.T., M.T., Ph.D.


In this paper, a decentralized PID controller in PI mode is tuned using Biggest-Log Modulus (BLT) tuning method and a stochastic optimization method i.e. Duelist Algorithm (DA) for multivariable system. A TITO system with FOPDT model is considered to examine the performance of the controller using those two different methods. In BLT method, the PID controller tuning parameters were first designed by using Ziegler-Nichols (ZN) method from S-curve, then the biggest log modulus is obtained to find the F factor and detuned the ZN value using the factor of BLT method. In DA method, the Integral Absolute Error (IAE) was utilized as objective function to determine optimal PID controller settings. The two PID controllers are simultaneously being optimized to find the optimal PID parameters. The performances of the control system are observed for both the changes of set point and disturbance value. The performance├é┬á…