ANALISIS RESPON PENGENDALI TEKANAN PADA SCRUBBER MENGGUNAKAN IDENTIFIKASI SISTEM KALANG TERTUTUP (STUDI KASUS PLTP UNIT IV PT. PGE KAMOJANG )

• Main Authors: , IDO FANDY DERMAWAN, , Dr.-Ing. Awang N.I. Wardana
• Format: Theses and Dissertations NonPeerReviewed
• Published: [Yogyakarta] : Universitas Gadjah Mada 2013
• Subjects: ETD
• Online Access: https://repository.ugm.ac.id/124586/; http://etd.ugm.ac.id/index.php?mod=penelitian_detail&sub=PenelitianDetail&act=view&typ=html&buku_id=64740
• Institution: Universitas Gadjah Mada

Identification in closed loop is the method to obtain a mathematics model or plant transfer function from data of a dynamic plant without switching the controller off and open the loop. Identification method consist of input and output data acquisition according to Nyquist�s criteria, selection of the model structure, estimation of the transfer function using cloe program, and validation of the identification model using clvalid program. This paper compares the result of old PI controller time respons in closed loop with new result from tuning. The tuning method used is Singular Frequency Based Tuning which have four criterion. The criterion are Integral of Absolute Error (IAE), Intergral of Squared Error (ISE), Integral of Time-Weighted Absolute Error (ITAE), and Integral of Time-Weighted Squared Error (ITSE). Control variation used is proporsional (P) controller, proporsional plus integral (PI) controller, and proporsional plus integral plus differential (PID) controller. The result of this identification in closed loop is overdamped plant model with 451 second settling time. The best tuning result is from PID controller with Kp = 6.9330, Ti = 1.13866, and Td = 0.264. The result of the new kontroller time respons can reduce settling time into 43 second, rise time 5.68 second, peak time 14.7 second and overshoot 19.5%