An observer design for linear time-delay systems

Hou, M.; Zítek, P.; Patton, R. J.

doi:10.1109/9.981730

Active fault tolerant control for nonlinear systems with simultaneous actuator and sensor faults (2013)
Journal Article
Sami, M., & Patton, R. J. (2013). Active fault tolerant control for nonlinear systems with simultaneous actuator and sensor faults. International journal of control, automation, and systems, 11(6), 1149-1161. https://doi.org/10.1007/s12555-013-0227-1

The goal of this paper is to describe a novel fault tolerant tracking control (FTTC) strategy based on robust fault estimation and compensation of simultaneous actuator and sensor faults. Within the framework of fault tolerant control (FTC) the chall... Read More about Active fault tolerant control for nonlinear systems with simultaneous actuator and sensor faults.

The effect of osteocyte apoptosis on signalling in the osteocyte and bone lining cell network: A computer simulation (2012)
Journal Article
Jahani, M., Genever, P. G., Patton, R. J., Ahwal, F., & Fagan, M. J. (2012). The effect of osteocyte apoptosis on signalling in the osteocyte and bone lining cell network: A computer simulation. Journal of biomechanics, 45(16), 2876-2883. https://doi.org/10.1016/j.jbiomech.2012.08.005

Osteocytes play a critical role in the regulation of bone remodelling by translating strain due to mechanical loading into biochemical signals transmitted through the interconnecting lacuno-canalicular network to bone lining cells (BLCs) on the bone... Read More about The effect of osteocyte apoptosis on signalling in the osteocyte and bone lining cell network: A computer simulation.

An LPV pole-placement approach to friction compensation as an FTC problem (2012)
Journal Article
Chen, L., Patton, R., & Klinkhieo, S. (2012). An LPV pole-placement approach to friction compensation as an FTC problem. International Journal of Applied Mathematics and Computer Science, 22(1), 149-160. https://doi.org/10.2478/v10006-012-0011-z

The concept of combining robust fault estimation within a controller system to achieve active Fault Tolerant Control (FTC) has been the subject of considerable interest in the recent literature. The current study is motivated by the need to develop m... Read More about An LPV pole-placement approach to friction compensation as an FTC problem.

A novel mathematical model of bone remodelling cycles for trabecular bone at the cellular level (2012)
Journal Article
Ji, B., Genever, P. G., Patton, R. J., Putra, D., & Fagan, M. J. (2012). A novel mathematical model of bone remodelling cycles for trabecular bone at the cellular level. Biomechanics and Modeling in Mechanobiology, 11(7), 973-982. https://doi.org/10.1007/s10237-011-0366-3

After an initial phase of growth and development, bone undergoes a continuous cycle of repair, renewal and optimisation by a process called remodelling. This paper describes a novel mathematical model of the trabecular bone remodelling cycle. It is e... Read More about A novel mathematical model of bone remodelling cycles for trabecular bone at the cellular level.

Simulation of osteocyte apoptosis on signalling in the osteocyte-bone lining cell network and implications for osteoporosis (2010)
Journal Article
Ahwal, F., Patton, R., & Fagan, M. (2010). Simulation of osteocyte apoptosis on signalling in the osteocyte-bone lining cell network and implications for osteoporosis. Osteoporosis International, 21(Supp3), S514 - S514

Robust FDI applied to thruster faults of a satellite system (2010)
Journal Article
Patton, R. J., Polle, B., Simani, S., & Uppal, F. J. (2010). Robust FDI applied to thruster faults of a satellite system. Control engineering practice, 18(9), 1093-1109. https://doi.org/10.1016/j.conengprac.2009.04.011

This paper presents a practical solution to the problem of robust fault detection and isolation (FDI) for faults affecting the thrusters of a satellite system Mars Express (MEX). A non-linear model of MEX is used and the system is considered in the p... Read More about Robust FDI applied to thruster faults of a satellite system.

Friction compensation as a fault-tolerant control problem (2010)
Journal Article
Patton, R. J., Putra, D., & Klinkhieo, S. (2010). Friction compensation as a fault-tolerant control problem. International Journal of Systems Science, 41(8), 987-1001. https://doi.org/10.1080/00207720903434797

The control of systems that involve friction presents interesting challenges. Recent research has focused on detailed modelling of friction phenomena in order to use robust on-line friction compensation procedures, attempting to cancel out the fricti... Read More about Friction compensation as a fault-tolerant control problem.

Robust FDI for FTC coordination in a distributed network system (2008)
Journal Article
Klinkhieo, S., Patton, R. J., & Kambhampati, C. (2008). Robust FDI for FTC coordination in a distributed network system. IFAC Proceedings Volumes/ International Federation of Automatic Control, 41(2), 13551-13556. https://doi.org/10.3182/20080706-5-KR-1001.0468

This paper focuses on the development of a suitable Fault Detection and Isolation (FDI) strategy for application to a system of inter-connected and distributed systems, as a basis for a fault-tolerant Network Control System (NCS) problem. The work fo... Read More about Robust FDI for FTC coordination in a distributed network system.

Reliable fault diagnosis scheme for a spacecraft attitude control system (2008)
Journal Article
Patton, R. J., Uppal, F. J., Simani, S., & Polle, B. (2008). Reliable fault diagnosis scheme for a spacecraft attitude control system. Proceedings of the Institution of Mechanical Engineers. Part O, Journal of risk and reliability, 222(2), 139-152. https://doi.org/10.1243/1748006xjrr98

This paper presents a scheme for fault detection and isolation (FDI) of on-board gyroscope sensors and thrusters for spacecraft attitude control, based on the example of the Mars Express (MEX) satellite. The main contribution of the paper is related... Read More about Reliable fault diagnosis scheme for a spacecraft attitude control system.

A generic strategy for fault-tolerance in control systems distributed over a network (2007)
Journal Article
Patton, R. J., Kambhampati, C., Casavola, A., Zhang, P., Ding, S., & Sauter, D. (2007). A generic strategy for fault-tolerance in control systems distributed over a network. European journal of control / EUCA, European Control Association, 13(2-3), 280-296. https://doi.org/10.3166/ejc.13.280-296

This paper provides a tutorial overview, of a number of aspects and approaches to Control over the Network for Network Control Systems (NCS) that are likely to lead to good fault-tolerant control properties, subject to network faults. In order to ana... Read More about A generic strategy for fault-tolerance in control systems distributed over a network.

Fault diagnosis of an industrial gas turbine prototype using a system identification approach (2007)
Journal Article
Simani, S., & Patton, R. J. (2008). Fault diagnosis of an industrial gas turbine prototype using a system identification approach. Control engineering practice, 16(7), 769-786. https://doi.org/10.1016/j.conengprac.2007.08.009

In this work, a model-based procedure exploiting analytical redundancy for the detection and isolation of faults on a gas turbine simulated process is presented. The main point of the paper consists of exploiting an identification scheme in connectio... Read More about Fault diagnosis of an industrial gas turbine prototype using a system identification approach.

An interaction predictive approach to fault-tolerant control in network control systems (2007)
Journal Article
Kambhampati, C., Perkgoz, C., Patton, R. J., & Ahamed, W. (2007). An interaction predictive approach to fault-tolerant control in network control systems. Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 221(6), 885-894. https://doi.org/10.1243/09596518jsce377

This paper illustrates some of the capabilities of previously proposed network control system (NCS) architectures to carry on functioning in the event of faults, without recourse to system reconfiguration. The principle of interaction prediction is u... Read More about An interaction predictive approach to fault-tolerant control in network control systems.

Observing a three-tank system (2005)
Journal Article
Hou, M., Xiong, Y., & Patton, R. (2005). Observing a three-tank system. IEEE Transactions on Control Systems Technology, 13(3), 478-484. https://doi.org/10.1109/TCST.2004.839578

Observability analysis and observer synthesis are studied for a three-tank water process. Observability of the process is considered under various assumptions on measurements. The observer design takes into account singularity of nonlinear observers.... Read More about Observing a three-tank system.

An observer design for linear time-delay systems (2002)
Journal Article
Hou, M., Zítek, P., & Patton, R. J. (2002). An observer design for linear time-delay systems. IEEE transactions on automatic control, 47(1), 121-125. https://doi.org/10.1109/9.981730

An observer design is proposed for linear systems with time delay. The key of the design is to find a generalized coordinate change such that in the new coordinates all the time-delay terms are injected by the system's output. The existence of such a... Read More about An observer design for linear time-delay systems.

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