A new Smith predictor and controller for control of processes with long dead time

Kaya I.

ISA TRANSACTIONS, cilt.42, ss.101-110, 2003 (SCI İndekslerine Giren Dergi) identifier identifier identifier

  • Cilt numarası: 42 Konu: 1
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1016/s0019-0578(07)60117-7
  • Sayfa Sayıları: ss.101-110


Good control of processes. With long dead time is often achieved using a Smith predictor configuration. Typically a PI or PID controller is used; however, it is shown in this paper that for some situations improved set point and disturbance responses can be obtained if a PI-PD controller is Used. Several methods are possible for selecting the parameters of the PI-PD controller but when the plant transfer function has no zeros, the use of the standard forms provides a simple algebraic approach, and also reveals why difficulties may be encountered if a PID controller is used. Some examples are given to show the value of the approach presented. (C) 2003 ISA-The Instrumentation, Systems, and Automation. Society.