N. Srinivas et M. Chidambaram, COMPARISON OF ONLINE CONTROLLER TUNING METHODS FOR UNSTABLE SYSTEMS, Process control and quality, 8(4), 1996, pp. 177-183
Citations number
13
Categorie Soggetti
Instument & Instrumentation","Engineering, Chemical
Methods of closed loop identification of a delay plus unstable first o
rder model for controller tuning are proposed by the extension of the
methods of Jutan and Rodrigues [1], Lee [2] and Chen [3], which are or
iginally suggested for stable systems. Based on the identified model,
PI controllers are designed and the performance of the closed loop sys
tem is compared with all three methods and with the extension of the Y
uwana and Seborg method [4]. Two simulated systems are considered: an
unstable first order plus delay system and an unstable second order pl
us delay system. The extension of the Chen [3] method gives the lowest
ISE value among the four methods.