Fault-tolerant control by means of moving horizon virtual actuators: Concepts and experimental investigation

Costa, Thiago V.; Sencio, Rafael R.; Oliveira-Lopes, Luís Cláudio; Silva, Flávio V.

doi:10.1016/j.conengprac.2020.104683

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…Initially developed for LTI systems [9], virtual sensors and actuators have been applied successfully to piecewise affine [10], Hammerstein-Wiener [11], linear parameter varying (LPV) [12], [13], networked [14] and descriptor systems [15]. Practical validation of this FTC approach has been achieved using case studies such as turbofan engines [16] and pH neutralization plants [17], and a modelfree adaptive version has been recently proposed in [18]. Some works have described how virtual actuators could be applied in the multi-agent framework to achieve a faulttolerant consensus.…”

Section: Introductionmentioning

confidence: 99%

Virtual Actuator and Sensor Fault Tolerant Consensus for Homogeneous Linear Multi-Agent Systems

Rotondo,

Theilliol,

Ponsart

2024

IEEE Trans. Circuits Syst. I

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This paper presents a fault tolerant consensus protocol for homogeneous linear multi-agent systems using virtual actuators and virtual sensors. By means of the virtual actuators/sensors, the faulty system is reconfigured so that it can be brought into a block-triangular form through an appropriate change of variables. In this way, a Lyapunov-based approach can be used to obtain design conditions expressed as a feasibility problem involving linear matrix inequalities (LMIs). Both the linear time invariant (LTI) and the linear parameter varying (LPV) cases are discussed, the latter under the assumption of synchronized trajectories of the time-varying parameters. An academic example is used to illustrate the main features of the proposed fault tolerant consensus protocol. In particular, it is shown that by activating the virtual actuators/sensors, the agents achieve consensus in spite of severe faults, whereas instability of the synchronization errors occurs if no fault tolerant strategy is employed.

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Section: Introductionmentioning

confidence: 99%

Virtual Actuator and Sensor Fault Tolerant Consensus for Homogeneous Linear Multi-Agent Systems

Rotondo,

Theilliol,

Ponsart

2024

IEEE Trans. Circuits Syst. I

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“…With the development of the manufacturing industry, higher requirements are put forward for the control accuracy and safe operation of industrial actuator systems [1][2][3]. The establishment of an accurate industrial system model is necessary for implementing process control and safety monitoring [4].…”

Section: Introductionmentioning

confidence: 99%

Identification Modelling and fault-tolerant predictive control for industrial input nonlinear actuator system

Dong

Zhang

Wang

et al. 2022

Preprint

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Industrial control system plays an important role in process industry, chemical production and other manufacturing industries. It has important theoretical research significance and engineering application value to establish accurate models for industrial actuator system with dead-zone input nonlinearity. The structure and order of the typical system model are determined by analyzing the mechanism relationship of the system. Based on sampled data, a data-driven identification algorithm is proposed for industrial actuator system with dead-zone input nonlinearity to describe the main dynamic characteristics of the system output. The convergence property of the proposed algorithm is also analyzed. Process faults will reduce the tracking control accuracy of industrial actuator systems. An intermediate observer is used to estimate the faults. A fault-tolerant synchronous control feedback rate based on fault estimation is designed to compensate faults. The input dead zone block will weaken the feedback control performance of the input signal and reduce the control precision of the intermediate observer. According to the dead zone model, a compensator is introduced to transform the dead zone function into a linear function passing through the origin of coordinates. The transformed linear segment and the dynamic linear segment of the system constitute the generalized linear system. The model predictive control (MPC) strategy is designed to achieve robust and precise control by eliminating the effect of measurement noise. Finally, numerical simulation example and experimental test results verify the superiority and merit of the modeling method and fault-tolerant control strategy.

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“…Note that, in the input matrix, the elements related to u 2 were reduced in 20%, which may represent in practice an actuator fault called loss of effectiveness (COSTA et al, 2021). A persistent disturbance d = −0.1 enters the plant at time step k = 30.…”

Section: Case Study 1: Double-integrator Systemmentioning

confidence: 99%

Model predictive control based on the output prediction-oriented model: a dual-mode approach, and robust distributed algorithms.

Sêncio¹

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for their valuable comments and suggestions that helped me to improve the text.I am extremely grateful to Guilherme for his constant review of my texts, for our fruitful exchange of experience in MATLAB, CasADi and L A T E X, and for the numerous conversations we had about control theory and the stability ingredients of different MPC formulations.I would like to thank Prof. Thiago Costa for inviting me to collaborate on papers we published together during this period. I would also like to thank him for being the one who introduced me to this fascinating world of Model Predictive Control.Thanks should also go to my friends from the Department of Telecommunications and Control Engineering, Fábio, Leonardo, Mateus and Gabriel, for our exchange of knowledge on control theory, and for the great time we spent together during our trip to take the LMI course at UNICAMP and during the CBA 2018. I am also grateful for always being welcome in their laboratory and for the espressos we had together at LCA.

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Fault-tolerant control by means of moving horizon virtual actuators: Concepts and experimental investigation

Cited by 8 publications

References 28 publications

Virtual Actuator and Sensor Fault Tolerant Consensus for Homogeneous Linear Multi-Agent Systems

Virtual Actuator and Sensor Fault Tolerant Consensus for Homogeneous Linear Multi-Agent Systems

Identification Modelling and fault-tolerant predictive control for industrial input nonlinear actuator system

Model predictive control based on the output prediction-oriented model: a dual-mode approach, and robust distributed algorithms.

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