Design of fault‐tolerant control for MTTF
Copyright policy )Design of fault‐tolerant control for MTTF
AbstractMean time to failure (MTTF) is an important reliability index of fault‐tolerant control systems, which is chosen as a design objective in this paper. However, it is usually evaluated from stochastic reliability models, and no analytical expression is available to relate MTTF to controller parameters. To overcome this difficulty, a two‐stage design scheme is proposed in this paper: A gradient‐based search is firstly carried out on probabilistic H∞ performance characteristics for MTTF requirement; a sequential randomized algorithm with a weighted violation function is then developed for a controller design to satisfy the required H∞ performance, and its convergence is guaranteed with probability 1. Two iterative algorithms are carried out alternately to implement this scheme, and a controller can be designed for MTTF requirement. Copyright © 2008 John Wiley & Sons, Ltd.
- University of Alberta Canada
reliability, Design techniques (robust design, computer-aided design, etc.), Computational methods in stochastic control, randomized algorithms, Stochastic stability in control theory, fault-tolerant control, probabilistic robustness
reliability, Design techniques (robust design, computer-aided design, etc.), Computational methods in stochastic control, randomized algorithms, Stochastic stability in control theory, fault-tolerant control, probabilistic robustness
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