Loading...

Predictive directional compensator for systems with input constraints

Haeri, M ; Sharif University of Technology | 2006

300 Viewed
  1. Type of Document: Article
  2. DOI: 10.1016/S0019-0578(07)60220-1
  3. Publisher: ISA - Instrumentation, Systems, and Automation Society , 2006
  4. Abstract:
  5. Nonlinearity caused by actuator constraint plays a destructive role in the overall performance of a control system. A model predictive controller can handle the problem by implementing a constrained optimization algorithm. Due to the iterative nature of the solution, however, this requires high computation power. In the present work we propose a new method to approach the problem by separating the constraint handling from the predictive control job. The input constraint effects are dealt with in a newly defined component called a predictive directional compensator, which works based on the directionality and predictive concepts. Through implementation of the proposed method, the computational requirement is greatly reduced with the least degradation of the closed-loop performance. Meanwhile, a new characteristic matrix has been defined by which directionality of SISO as well as nonminimum phase systems can be determined. © 2006 ISA - The Instrumentation, Systems, and Automation Society
  6. Keywords:
  7. Closed loop control systems ; Constraint theory ; Optimization ; Problem solving ; Compensation ; Discrete characteristic matrix ; Index of directionality ; Input constraints ; Predictive compensator ; Saturation ; Predictive control systems ; Algorithm ; Feedback system ; Statistical model ; Algorithms ; Computer Simulation ; Feedback ; Linear Models ; Quality Control ; Systems Theory
  8. Source: ISA Transactions ; Volume 45, Issue 3 , 2006 , Pages 393-405 ; 00190578 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0019057807602201