https://users.encs.concordia.ca/~ymzhang/publications/ARC32-2-98Zhang_pp.229-252.pdf

Bibliographical review on reconfigurable fault-tolerant control systems

A novel fault tolerant attitude tracking control scheme is developed for flexible spacecraft with partial loss of actuator effectiveness fault. Neural networks are first introduced to account for system uncertainties, and an adaptive sliding mode controller is derived by using on-line updating law to estimate the bound of actuator fault such that any information of the fault is not required. To further address actuator saturation problem, a modified fault tolerant control law is then presented to ensure that the resulting control signal will never incur saturation. It is shown that the roll, pitch and yaw angle trajectories can globally asymptotically track the desired attitude in the face of faulty actuator, system uncertainties, external disturbances and even actuator saturation. A simulation example of a flexible spacecraft is given to illustrate the effectiveness of the proposed controller.

/pdf/adaptive-sliding-mode-fault-tolerant-attitude-tracking-4mdhd7qg0k.pdf

Adaptive Sliding Mode Fault Tolerant Attitude Tracking Control for Flexible Spacecraft Under Actuator Saturation

Motivated by several accidents, attitude control of a spacecraft subject to faults/failures has gained considerable attention in a wider range of aerospace engineering and academic communities. This paper is concerned with industrial practices and theoretical approaches for fault tolerant control (FTC) and fault detection and diagnosis (FDD) in spacecraft attitude control system. An overview on recent development of spacecraft attitude FTC system design is presented. The basis of a FTC system is introduced. The existing engineering FTC techniques and theoretical methodologies, including their advantages and disadvantages, are discussed. Moreover, closely associated with the reliability-relevant issues, recent progress in attitude FTC design strategies is reviewed. A brief review of some open problems in the general area of spacecraft attitude control design subject to components faults/failures is further concluded.

A Review on Recent Development of Spacecraft Attitude Fault Tolerant Control System

Review: A review of active structural control: challenges for engineering informatics

This survey of model-based fault diagnosis focuses on those methods that are applicable to aerospace systems. To highlight the characteristics of aerospace models, generic non-linear dynamical modelling from flight mechanics is recalled and a unifying representation of sensor and actuator faults is presented. An extensive bibliographical review supports a description of the key points of fault detection methods that rely on analytical redundancy. The approaches that best suit the constraints of the field are emphasized and recommendations for future developments in in-flight fault diagnosis are provided.

/pdf/model-based-fault-diagnosis-for-aerospace-systems-a-survey-jpkifgdebi.pdf

Model-based fault diagnosis for aerospace systems: a survey:

Fault Tolerant Flight Control

Surviving the Improbable: Towards Resilient Aircraft Control.- Fault Tolerant Flight Control - A Survey.- Fault Detection and Diagnosis for Aeronautic and Aerospace Missions.- Real-Time Identification of Aircraft Physical Models for Fault Tolerant Flight Control.- Industrial Practices in Fault Tolerant Control.- RECOVER: The Benchmark Challenge.- RECOVER: A Benchmark for Integrated Fault Tolerant Flight Control Evaluation.- Assessment Criteria as Specifications for Reconfiguring Flight Control.- Design Methods and Benchmark Analysis.- Fault Tolerant Control Using Sliding Modes with On-Line Control Allocation.- An Adaptive Fault-Tolerant FCS for a Large Transport Aircraft.- Subspace Predictive Control Applied to Fault-Tolerant Control.- Fault-Tolerant Control through a Synthesis of Model-Predictive Control and Nonlinear Inversion.- A FTC Strategy for Safe Recovery against Trimmable Horizontal Stabilizer Failure with Guaranteed Nominal Performance.- Flight Control Reconfiguration Based on Online Physical Model Identification and Nonlinear Dynamic Inversion.- A Combined Fault Detection, Identification and Reconfiguration System Based around Optimal Control Allocation.- Detection and Isolation of Actuator/Surface Faults for a Large Transport Aircraft.- Real-Time Flight Simulator Assessment.- Real-Time Assessment and Piloted Evaluation of Fault Tolerant Flight Control Designs in the SIMONA Research Flight Simulator.- Piloted Evaluation Results of a Nonlinear Dynamic Inversion Based Controller Using Online Physical Model Identification.- Model Reference Sliding Mode FTC with SIMONA Simulator Evaluation: EL AL Flight 1862 Bijlmermeer Incident Scenario.- Conclusions.- Industrial Review.- Concluding Remarks.

Fault tolerant flight control : a benchmark challenge

This paper presents a description of a large transp ort aircraft simulation benchmark that includes a suitable set of assessment criteria , for the integrated evaluation of fault tolerant flight control systems (FTFC). These syste ms consist of a combination of novel fault detection, isolation (FDI) and reconfigurable contr ol schemes. In 2004, a research group on Fault Tolerant Control, comprising a collaboration of nine European partners from industry, universities and research institutions, w as established within the framework of the Group for Aeronautical Research and Technology in Europe (GARTEUR) co-operation program. The aim of the research group, Flight Mechanics Action Group FM-AG(16), is to demonstrate the capability and viability of modern FTFC schemes when applied to a realistic, nonlinear design problem and to assess t heir capability to improve aircraft survivability. The test scenarios that are an integ ral part of the benchmark were selected to provide challenging assessment criteria to evaluate the effectiveness and potential of the FTFC methods being investigated. The application of fault reconstruction and modelling techniques based on (accident) flight data, as desc ribed in this paper, has resulted in high fidelity non-linear aircraft and fault models for t he design and evaluation of modern FTFC methods.

A Simulation Benchmark for Integrated Fault Tolerant Flight Control Evaluation

Adverse rotorcraft pilot couplings¿Past, present and future challenges

Fault tolerant flight control (FTFC), or intelligent self-adaptive control, enables improved survivability and recovery from adverse flight conditions induced by faults, damage and associated upsets. This can be achieved by ’intelligent’ utilisation of the control authority of the remaining control effectors in all axes consisting of the control surfaces and engines or a combination of both. In this technique, control strategies are applied to restore vehicle stability, manoeuvrability and conventional piloting techniques for continued safe operation and a survivable landing of the aircraft.

Hafid Smaili

Papers

Fault Tolerant Flight Control

Fault tolerant flight control : a benchmark challenge

A Simulation Benchmark for Integrated Fault Tolerant Flight Control Evaluation

Adverse rotorcraft pilot couplings¿Past, present and future challenges

RECOVER: A Benchmark for Integrated Fault Tolerant Flight Control Evaluation