Title of article :
PID controller tuning for the first-order-plus-dead-time process model via Hermite-Biehler theorem
Author/Authors :
Roy، نويسنده , , Anindo and Iqbal، نويسنده , , Kamran، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
16
From page :
363
To page :
378
Abstract :
This paper discusses PID stabilization of a first-order-plus-dead-time (FOPDT) process model using the stability framework of the Hermite-Biehler theorem. The FOPDT model approximates many processes in the chemical and petroleum industries. Using a PID controller and first-order Padé approximation for the transport delay, the Hermite-Biehler theorem allows one to analytically study the stability of the closed-loop system. We derive necessary and sufficient conditions for stability and develop an algorithm for selection of stabilizing feedback gains. The results are given in terms of stability bounds that are functions of plant parameters. Sensitivity and disturbance rejection characteristics of the proposed PID controller are studied. The results are compared with established tuning methods such as Ziegler-Nichols, Cohen-Coon, and internal model control.
Keywords :
FOPDT process , PID control , Hermite-Biehler theorem , stability analysis
Journal title :
ISA TRANSACTIONS
Serial Year :
2005
Journal title :
ISA TRANSACTIONS
Record number :
2382697
Link To Document :
بازگشت