Uncertainty Modeling for Robustness Analysis of Aircraft Control Upset Prevention and Recovery Systems

Belcastro, Christine M.; Khong, Thuan; Shin, Jeeyoung; Kwatny, Harry G.; Chang, Bill C.H.; Balas, Gary J.

doi:10.2514/6.2005-6427

Cited by 11 publications

(13 citation statements)

References 5 publications

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“…[1,3] is briefly summarized for completeness of this paper. Suppose the class of systems is described as…”

Section: Numerical Parameter Lft Modeling Approachmentioning

confidence: 99%

“…The detailed procedures are described in Refs. [1,3]. There are other available software tools developed by ONERA [15] and MuSyn.…”

Section: Numerical Parameter Lft Modeling Approachmentioning

confidence: 99%

“…Aircraft loss-of-control accidents [1] comprise the largest and most fatal aircraft accident category across all civil transport classes, and can result from a large array of causal and contributing factors (e.g., system and component failures, control system impairment or damage, inclement weather, inappropriate pilot inputs, etc.) occurring either individually or in combination.…”

Section: Introductionmentioning

confidence: 99%

“…Ref. [1] presents a numerical matrix-based modeling method and preliminary software tool for computing LFT models from a linear parameter varying (LPV) model of the system. This paper presents practical uses of LFT models in robustness analysis of the integrated fault tolerant control (IFTC) system for a Boeing 747-100/200 aircraft.…”

Section: Introductionmentioning

confidence: 99%

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Closed-Loop Evaluation of An Integrated Failure Identification and Fault Tolerant Control System for A Transport Aircraft

Shin

Belcastro

Khong

2006

AIAA Guidance, Navigation, and Control Conference and Exhibit

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Formal robustness analysis of aircraft control upset prevention and recovery systems could play an important role in their validation and ultimate certification. Such systems developed for failure detection, identification, and reconfiguration, as well as upset recovery, need to be evaluated over broad regions of the flight envelope or under extreme flight conditions, and should include various sources of uncertainty. To apply formal robustness analysis, formulation of linear fractional transformation (LFT) models of complex parameter-dependent systems is required, which represent system uncertainty due to parameter uncertainty and actuator faults. This paper describes a detailed LFT model formulation procedure from the nonlinear model of a transport aircraft by using a preliminary LFT modeling software tool developed at the NASA Langley Research Center, which utilizes a matrix-based computational approach. The closed-loop system is evaluated over the entire flight envelope based on the generated LFT model which can cover nonlinear dynamics. The robustness analysis results of the closed-loop fault tolerant control system of a transport aircraft are presented. A reliable flight envelope (safe flight regime) is also calculated from the robust performance analysis results, over which the closed-loop system can achieve the desired performance of command tracking and failure detection. * Senior Staff Scientist, Robust and Adaptive Control, AIAA Member, email:shinjy@nianet.org.† Senior Researcher, Dynamic Systems and Control Branch, AIAA Member. ‡ Researcher, Dynamic Systems and Control Branch, AIAA Member.

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“…[1,3] is briefly summarized for completeness of this paper. Suppose the class of systems is described as…”

Section: Numerical Parameter Lft Modeling Approachmentioning

confidence: 99%

“…The detailed procedures are described in Refs. [1,3]. There are other available software tools developed by ONERA [15] and MuSyn.…”

Section: Numerical Parameter Lft Modeling Approachmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Closed-Loop Evaluation of An Integrated Failure Identification and Fault Tolerant Control System for A Transport Aircraft

Shin

Belcastro

Khong

2006

AIAA Guidance, Navigation, and Control Conference and Exhibit

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“…Aircraft loss-of-control (LOC) accidents [1] comprise the largest and most fatal aircraft accident category across all civil transport classes, and can result from a large array of causal and contributing factors (e.g., system and component failures, control system impairment or damage, inclement weather, inappropriate pilot inputs, etc.) occurring either individually or in combination.…”

Section: Introductionmentioning

confidence: 99%

Robust Gain-Scheduled Fault Tolerant Control For A Transport Aircraft

Shin

Gregory

2007

2007 IEEE International Conference on Control Applications

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Abstract-This paper presents an application of robust gainscheduled control concepts using a linear parameter-varying (LPV) control synthesis method to design fault tolerant controllers for a civil transport aircraft. To apply the robust LPV control synthesis method, the nonlinear dynamics must be represented by an LPV model, which is developed using the function substitution method over the entire flight envelope. The developed LPV model associated with the aerodynamic coefficient uncertainties represents nonlinear dynamics including those outside the equilibrium manifold. Passive and active fault tolerant controllers (FTC) are designed for the longitudinal dynamics of the Boeing 747-100/200 aircraft in the presence of elevator failure. Both FTC laws are evaluated in the full nonlinear aircraft simulation in the presence of the elevator fault and the results are compared to show "pros" and "cons" of each control law.

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Validation and Verification Techniques and Tools

Belcastro¹

2015

Encyclopedia of Systems and Control

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Uncertainty Modeling for Robustness Analysis of Aircraft Control Upset Prevention and Recovery Systems

Cited by 11 publications

References 5 publications

Closed-Loop Evaluation of An Integrated Failure Identification and Fault Tolerant Control System for A Transport Aircraft

Closed-Loop Evaluation of An Integrated Failure Identification and Fault Tolerant Control System for A Transport Aircraft

Robust Gain-Scheduled Fault Tolerant Control For A Transport Aircraft

Validation and Verification Techniques and Tools

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