Title :
Reliable control using the primary and dual Youla parameterizations
Author :
Niemann, Henrik ; Stoustrup, Jakob
Author_Institution :
Tech. Univ. Denmark, Lyngby, Denmark
Abstract :
Different aspects of modeling faults in dynamic systems are considered in connection with reliable control (RC). The fault models include models with additive faults, multiplicative faults and structural changes in the models due to faults in the systems. These descriptions are considered in connection with reliable control and feedback control with fault rejection. The main emphasis is on fault modeling. A number of fault diagnosis problems, reliable control problems, and feedback control with fault rejection problems are formulated/considered, again, mainly from a fault modeling point of view. Reliability is introduced by means of the (primary) Youla parameterization of all stabilizing controllers, where an additional loop is closed around a diagnostic signal. In order to quantify the level of reliability, the dual Youla parameterization is introduced which can be used to analyze how large faults can be tolerated without losing, e.g., stability.
Keywords :
closed loop systems; controllers; fault diagnosis; feedback; robust control; Youla parameterizations; additional loop; additive faults; diagnostic signal; dynamic systems; fault detection systems; fault diagnosis; fault rejection; fault rejection problems; feedback control; modeling faults; multiplicative faults; reliable control; stability; stabilizing controllers; structural changes; Actuators; Automation; Books; Computer hacking; Fault detection; Fault diagnosis; Feedback control; Radio control; Robust control; Stability;
Conference_Titel :
Decision and Control, 2002, Proceedings of the 41st IEEE Conference on
Print_ISBN :
0-7803-7516-5
DOI :
10.1109/CDC.2002.1185057