Simultaneous fault detection and control for stochastic time-delay systems

Abstract

This paper is concerned with the simultaneous fault detection and control problem for Itô-type stochastic time-delay systems. A full-order dynamic output feedback controller is designed to achieve the desired control and detection objectives. The main contributions of this paper are as follows: (1) for stochastic time-delay systems, the controller design with multiple objectives can be addressed by employing the multiple Lyapunov functions approach, (2) the dynamic output feedback controller synthesis conditions described by linear matrix inequalities (LMIs) are derived and (3) within the proposed fault detection and control framework, a better integrated control and detection performance can be obtained. Some numerical examples including the comparison results are presented to show the advantages of the proposed method.

Keywords:

• stochastic systems
• fault detection
• dynamic output feedback control

Additional information

Notes on contributors

Xian-Ji Meng

Xian-Ji Meng received his BS and MS degrees from the School of Mathematics and Statistics, Northeast Normal University, Jilin, China. He is currently pursuing PhD at Northeastern University, Liaoning, China. His research interests include robust control and fault diagnosis.

Guang-Hong Yang

Guang-Hong Yang was born in 1963 in Jilin, China. He received his BS and MS degrees from Northeast University of Technology, Shenyang, China, in 1983 and 1986, respectively, and PhD degree in control engineering from Northeastern University, Shenyang, China (formerly Northeast University of Technology) in 1994. He was a lecturer/associate professor with Northeastern University from 1986 to 1995. He joined the Nanyang Technological University in 1996 as a postdoctoral fellow. From 2001 to 2005, he was a research scientist/senior research scientist with the National University of Singapore. He is currently a professor at the College of Information Science and Engineering, Northeastern University. His current research interests include fault-tolerant control, fault detection and isolation, non-fragile control systems design and robust control. Dr. Yang is an associate editor of the International Journal of Control, Automation, and Systems (IJCAS) and the International Journal of Systems Science (IJSS).