Quantitative feedback theory technique and applications

Houpis, Constantine H.; Sating, Richard R.; Rasmussen, Steven J.; Sheldon, Stuart

doi:10.1080/00207179408923069

Cited by 27 publications

(16 citation statements)

References 5 publications

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“…It should be noted that experience has shown that the optimum selection of v h is dependent on the nature of the system and the desired specifications, [19,21].…”

Section: Tracking Constraintmentioning

confidence: 99%

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Robust fault detection and isolation technique for single-input/single-output closed-loop control systems that exhibit actuator and sensor faults

Alavi

Izadi‐Zamanabadi

Hayes

2008

IET Control Theory Appl.

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Document VersionPublisher's PDF, also known as Version of record Link to publication from Aalborg University Citation for published version (APA):Izadi-Zamanabadi, R., Alavi, S. M. M., & Hayes, M. J. (2008). Robust fault detection and isolation technique for single-input/single-output closed-loop control systems that exhibit actuator and sensor faults. IET Control Theory and Applications, 2(11), 951-965. https://doi.org/10.1049/iet-cta:20070382 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.? Users may download and print one copy of any publication from the public portal for the purpose of private study or research. ? You may not further distribute the material or use it for any profit-making activity or commercial gain ? You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access to the work immediately and investigate your claim. Abstract: An integrated quantitative feedback design and frequency-based fault detection and isolation (FDI) approach is presented for single-input/single-output systems. A novel design methodology, based on shaping the system frequency response, is proposed to generate an appropriate residual signal that is sensitive to actuator and sensor faults in the presence of model uncertainty and exogenous unknown (unmeasured) disturbances. The key features of this technique are: (1) the uncertain phase information is fully addressed by the design equations, resulting in a minimally conservative over-design and (2) a graphical environment is provided for the design of fault detection (FD) filter, which is intuitively appealing from an engineering perspective. The FD filter can easily be obtained by manually shaping the frequency response into the complex plane. The question of interaction between actuator and sensor fault residuals is also considered. It is discussed how the actuator and sensor faults are distinguished from each other by appropriately defining FDI threshold values. The efficiency of the proposed method is demonstrated on a single machine infinite bus power system wherein a stabilised coordinate power system incorporating a robust FDI capability is achieved.

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“…It should be noted that experience has shown that the optimum selection of v h is dependent on the nature of the system and the desired specifications, [19,21].…”

Section: Tracking Constraintmentioning

confidence: 99%

“…1, the limiting value of the plant TF approaches lim v!1 P( jv) ¼K =s r , whereK is a real value and r represents the excess of poles over zeros of P(s). Finally, the critical point (21808, 0 dB) must also be avoided, [19,21].…”

Section: Loop-shaping Proceduresmentioning

confidence: 99%

Robust fault detection and isolation technique for single-input/single-output closed-loop control systems that exhibit actuator and sensor faults

Alavi

Izadi‐Zamanabadi

Hayes

2008

IET Control Theory Appl.

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“…Design process allows a designer to see what trade-offs are necessary to achieve a desired performance level. QFT technique procedure implies the next 4 basic steps: plant templates, frequency bounds, loop shaping and prefilter design (see [10]). …”

Section: A Qft Descriptionmentioning

confidence: 99%

Low level control of an omnidirectional mobile robot

Comasolivas

Quevedo

Escobet

et al. 2015

2015 23rd Mediterranean Conference on Control and Automation (MED)

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Abstract-This paper presents the low level control of an holonomic robot with four omnidirectional wheels. A robust control technique named Quantitative Feedback Theory (QFT), based on an uncertain linear model has been selected to design the PID speed controllers for the four-wheeled robot. A piecewise model has been estimated by means of the least squares estimation approach based on experimental results of the robot in closed loop. In particular, the control is designed using this piecewise model. The performances of the proposed approach are analyzed in real time domain.

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“…The toolbox imposes restrictions on the model structure as it is not possible to specifyḠ d (s). The controller design is based on Nichols plots, see Houpis et al [2006]. The desired stability specification is marked with black in Fig.…”

Section: Feedback Control -Qftmentioning

confidence: 99%

Exhaust Gas Recirculation Control for Large Diesel Engines – Achievable Performance with SISO Design

Hansen

Blanke

Niemann

et al. 2013

IFAC Proceedings Volumes

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This paper investigates control possibilities for Exhaust Gas Recirculation (EGR) on large diesel engines. The goal is to reduce the amount of N O x in the exhaust gas by reducing the oxygen concentration available for combustion. Control limitations imposed by the system are assessed using linear analysis of the highly non-linear dynamics. Control architectures are investigated and performance in terms of disturbance rejection and reference tracking are investigated under model uncertainty. Classical feed-forward and feedback controller designs are investigated using classical and Quantitative Feedback Theory (QFT) designs. Validation of the controller is made on the model with focus on disturbance reduction ability.

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Quantitative feedback theory technique and applications

Cited by 27 publications

References 5 publications

Robust fault detection and isolation technique for single-input/single-output closed-loop control systems that exhibit actuator and sensor faults

Robust fault detection and isolation technique for single-input/single-output closed-loop control systems that exhibit actuator and sensor faults

Low level control of an omnidirectional mobile robot

Exhaust Gas Recirculation Control for Large Diesel Engines – Achievable Performance with SISO Design

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