Abstract
In this paper, the control of open-loop unstable processes with deadtime is considered. Astrom's relay auto-tuning for PID regulators is extended to such processes. Some conditions for limit cycles under relay feedback are given. A first-order unstable rational function plus deadtime is employed to model a class of the processes with a single employed to model a class of the processes with a single unstable pole and deadtime. Its parameters are extracted from a relay feedback experiment. The modified finite spectrum assignment is used to control such a process and a simple method is then developed to obtain the closed-form control law for ease of real-time implementation. It is also shown that so auto-tuned MFSA system is practically stable in the face of perturbations in process dynamics. Simulation examples are included for illustration.
Original language | English |
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Pages (from-to) | 311-315 |
Number of pages | 5 |
Journal | Proceedings of the American Control Conference |
Volume | 1 |
Publication status | Published - 1995 |
Externally published | Yes |
Event | Proceedings of the 1995 American Control Conference. Part 1 (of 6) - Seattle, WA, USA Duration: 21 Jun 1995 → 23 Jun 1995 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering