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Fault-surface geometry controlled by faulting mechanisms: Experimental observations in limestone faults [PDF]
Geology, 2017 Surface geometry is an essential component in faulting and earthquake dynamics, yet its evolution and interrelationship with friction are poorly understood. The geometric characteristics of smooth fault surfaces are herein investigated by combining direct shear experiment results with statistical analysis of the surface topography.
Sagy, Amir +2 more
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2020
Fault tolerant control (FTC) builds up on fault diagnosis and is of major importance for systems of systems such as commercial aircrafts and autonomously operating systems. The task is to react to a fault that has been detected and isolated by providing new appropriate command inputs so that the system can continue its operation in the presence of a ...
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Fault tolerant control (FTC) builds up on fault diagnosis and is of major importance for systems of systems such as commercial aircrafts and autonomously operating systems. The task is to react to a fault that has been detected and isolated by providing new appropriate command inputs so that the system can continue its operation in the presence of a ...
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Fault Tolerant Control for Uncertain Systems with Parametric Faults
IFAC Proceedings Volumes, 2006Abstract A fault tolerant control (FTC) architecture based on active fault diagnosis (AFD) and the YJBK (Youla, Jarb, Bongiorno and Kucera) parameterization is applied in this paper. Based on the FTC architecture, fault tolerant control of uncertain systems with slowly varying parametric faults is investigated.
Henrik Niemann, Niels Kjølstad Poulsen
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2016
Control is used extensively in industry where it plays an important role in increasing productivity, but it is required to operate safely—especially where interaction with humans takes place. Particularly in safety critical systems like chemical plants, nuclear reactors, aircraft etc., reliability of the system is very important.
Mirza Tariq Hamayun +2 more
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Control is used extensively in industry where it plays an important role in increasing productivity, but it is required to operate safely—especially where interaction with humans takes place. Particularly in safety critical systems like chemical plants, nuclear reactors, aircraft etc., reliability of the system is very important.
Mirza Tariq Hamayun +2 more
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Fault-tolerant model predictive control with active fault isolation
2013 Conference on Control and Fault-Tolerant Systems (SysTol), 2013A robust control method is presented for linear systems subject to input and state constraints, bounded disturbances and measurement noise, and discrete faults in sensors, actuators, and system dynamics. The approach uses set-based fault detection and isolation techniques to coordinate switching between controllers designed for each fault scenario.
RAIMONDO, DAVIDE MARTINO +3 more
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Active fault tolerant control for networked control systems with actuator fault
2016 35th Chinese Control Conference (CCC), 2016This paper investigates the problem of active fault tolerant control for networked control systems with network delay, package loss, as well as actuator fault. Treating the aforementioned communication constraints as a unified definition of view, called the round-trip time (RTT) delay. An adaptive fault observer is devised in the sensor to evaluate the
Ji Zhang +3 more
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Integrated Fault-Detection and Fault-Tolerant Control
2013This chapter focuses on actuator faults for single-input nonlinear systems and presents a methodology to detect and handle the actuator fault through controller reconfiguration. First, the problem is considered under the assumption that state feedback is available; and then the approach is extended to the case where only certain outputs are available ...
Prashant Mhaskar +2 more
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Fault tolerant control for discrete networked control systems with random faults
International Journal of Control, Automation and Systems, 2012This paper concerns the fault tolerant control for discrete networked control systems (NCSs) with probabilistic sensor and actuator fault, random delay and packet dropout. The fault of each sensor or actuator happens in a random way, which is described by an individual random variable satisfying a certain probabilistic distribution.
Engang Tian, Chen Peng, Zhou Gu
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FAULT DIAGNOSIS OF NETWORKED CONTROL SYSTEMS
IFAC Proceedings Volumes, 2006Abstract Networked control systems (NCS) are feedback systems closed through data networks. NCS have many advantages compared with traditional systems; however, the network-induced delay and other characteristics of data networks may degrade the performance of feedback systems designed without taking the network into account.
Huajing Fang, Hao Ye, Maiying Zhong
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2019
This chapter explains the principles of fault-tolerant control. Points of main emphasis are FTC for continuous processes and discrete event systems, fault identification, fault-tolerant controllers and the prognosis of faults.
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This chapter explains the principles of fault-tolerant control. Points of main emphasis are FTC for continuous processes and discrete event systems, fault identification, fault-tolerant controllers and the prognosis of faults.
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