Scheduling schemes for an integrated flight and propulsion control system

Aouf, Nabil; Bates, Declan G.; Postlethwaite, Ian; Boulet, Benoît

doi:10.1016/s0967-0661(02)00028-x

Cited by 27 publications

(18 citation statements)

References 20 publications

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“…active vision systems [316], airplanes [14,314], bioreactors [185], canals [82], CD players [75], container crane load swing [128], control moment gyroscopes [1], electromagnetic actuators [102], engines [51], flexible ball screw drives [121], fuel cells [32,69], glycemic regulation [60], induction motors [233], internet web servers [234], inverted pendula [239], ionic polymer-metal composites [181], magneto-rheological dampers [294], robots [122], unmanned aerial vehicles (UAVs) [184,211], vehicle suspensions [101,231,232], wafer scanners [114], wind turbines [293] and winding machines [241]. Recently, the LPV paradigm has also been applied to time delay systems with time varying delays [44][45][46].…”

Section: Gain-scheduling: Lpv Systems and Ts Systemsmentioning

confidence: 99%

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Rotondo¹

2018

Springer Theses

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This thesis presents some contributions to the state-of-the-art of the fields of gainscheduling and fault tolerant control (FTC).In the area of gain-scheduling, the connections between the linear parameter varying (LPV) and Takagi-Sugeno (TS) paradigms are analyzed, showing that the methods for the automated generation of models by nonlinear embedding and by sector nonlinearity, developed for one class of systems, can be easily extended to deal with the other class. Then, two measures, based on the notions of overboundedness and region of attraction estimates, are proposed in order to compare different models and choose which one can be considered the best one. Later, the problem of designing state-feedback controllers for LPV systems has been considered, providing two main contributions. First, robust LPV controllers that can guarantee some desired performances when applied to uncertain LPV systems are designed, by using a double-layer polytopic description that takes into account both the variability due to the varying parameter vector and the uncertainty. Then, the idea of designing the controller in such a way that the required performances are scheduled by the varying parameters is explored, which provides an elegant way to vary online the behavior of the closed-loop system. In both cases, the problem reduces to finding a solution to a finite number of linear matrix inequalities (LMIs), which can be done efficiently using the available solvers.In the area of fault tolerant control, the thesis first shows that the aforementioned double-layer polytopic framework can be used for FTC, in such a way that different strategies (passive, active and hybrid) are obtained depending on the amount of available information. Later, an FTC strategy for LPV systems that involves a reconfigured reference model and virtual actuators is developed. It is shown that by including the saturations in the reference model equations, it is possible to design a model reference FTC system that automatically retunes the reference states whenever the system is affected by saturation nonlinearities. In this way, a graceful performance degradation in presence of actuator saturations is incorporated in an elegant way. Finally, the problem of FTC of unstable LPV systems subject to actuator saturations is considered. In this case, the design of the virtual actuator is performed in such a way that the convergence of the state trajectory to zero is assured despite the saturations and the appearance of faults. Also, it is shown that it is possible to obtain some guarantees about the tolerated delay between the fault occurrence and its isolation, and that the nominal controller can be designed so as to maximize the tolerated delay.i Resum Aquesta tesi presenta diverses contribucions a l'estat de l'art del control per planificació del guany i del control tolerant a fallades (FTC).Pel que fa al control per planificació del guany, s'analitzen les connexions entre els paradigmes dels sistemes lineals a paràmetres variants en el temps (LPV) i d...

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Section: Gain-scheduling: Lpv Systems and Ts Systemsmentioning

confidence: 99%

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Rotondo¹

2018

Springer Theses

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“…Controller output unification is such a technique, for example used in Ref. [3], where different controllers are applied at the same time, then outputs are interpolated to determine controller output. Concerning closed-loop behavior, this attitude brings on fine outcomes; nonetheless, the closed-loop stability is only guaranteed for selected fixed operating points.…”

Section: Gain-scheduling Adaptive Control Schemementioning

confidence: 99%

Embedded Controller Design for Mechatronics System

Engin¹

2017

Design, Control and Applications of Mechatronic Systems in Engineering

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Many mechatronic systems have challenging control difficulties due to the high nonlinear structures and time-varying dynamic behaviors. In addition to these, there are external disturbances, which cannot be predicted and change according to uncontrolled working environments. Conventional controllers are insufficient to solve the aforementioned problems and to compensate the environmental disturbances. Therefore, adaptive controllers have been proposed as a solution to these inefficiencies of conventional controllers. Adaptive control is applied for solving the control problem of the mechatronic sun tracker that ensures the movement of the mechanism to harvest maximum energy coming from solar to the PV module surface during the sunshine duration. For this type of control problems, conventional controllers are very limited and they have a lot of deficiencies. The adaptive mechanism governed by an adaptation law is the heart of any adaptive controller. We establish the adaptation law for the plant control system using Lyapunov stability theory. This adaptation law is precise for a generic second-order system; hence, it is obviously applicable for adaptive control of other second-order systems in different realms, such as industrial production system, military, and robotics.

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“…On the other hand, the work in [14] dealt with the design of a gain scheduling PI controller for the process; the gain scheduling design is done according to the operating input voltages. In this paper, three well-known controllers consisting of a gain scheduling control [15][16][17], a linear parameter varying control [18][19][20][21] and an input-output feedback linearization control [22,23] are designed and implemented to control the water levels in the quadruple tank process over the whole range of operation of the process. Moreover, an integral action is included in the three control schemes in order to achieve good tracking performances [22].…”

Section: Introductionmentioning

confidence: 99%

Control Schemes for a Quadruple Tank Process

Abdullah

Zribi

2014

INT J COMPUT COMMUN

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This paper deals with the control of a quadruple tank process. A gain scheduling controller, a linear parameter varying controller and an input-output feedback linearization controller are proposed for the quadruple tank process. The derivation of the three control schemes is presented in details. Moreover, the proposed control schemes are implemented using an experimental setup. The experimental results indicate that the developed control schemes work well and are able to regulate the output of the process to its desired value. Additionally, the implementation results demonstrate that the input-output feedback linearization controller gave the best performance.

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Scheduling schemes for an integrated flight and propulsion control system

Cited by 27 publications

References 20 publications

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Advances in Gain-Scheduling and Fault Tolerant Control Techniques

Embedded Controller Design for Mechatronics System

Control Schemes for a Quadruple Tank Process

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