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This paper proposes a sliding mode observer scheme to reconstruct actuator and sensor faults in a situation where the scheduling parameters are imperfectly known.
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This paper presents evaluation results from using second order sliding mode observer FDI schemes on the ADDSAFE Functional Engineering Simulator.
Using a nonlinear complete order model of a synchronous motor, a robust second order sliding mode observer based control scheme is proposed.
For the jam/runaway actuator benchmark problem, a more classical sliding mode observer based FDD scheme is considered in which the fault reconstruction is obtained from the equivalent output error injection signals associated with a second order sliding mode structure.
This paper describes the development and the evaluation of a robust sliding mode observer fault detection scheme applied to an aircraft benchmark problem as part of the ADDSAFE project.
The key merit of the presented scheme lies in its simplicity and integrity in design process of the traditional sliding mode observer (SMO) strategy, i.e., the state observer and sliding surface design as well as the associated sliding mode controller synthesis.
Here, we focus on the theoretical development of the estimator design for a realistic case of variable engine speed using the "sliding mode observer" and "nonlinear asymptotic observer" schemes.
In this article, the verification and validation (V&V) of a fault detection and isolation scheme based on sliding mode observer residual evaluators and threshold-based residual analysis of gyro and thruster faults for the Mars EXpress MEXX) satellite is presented.
A generic state space linear model of the system is first derived, and then a fault diagnosis scheme is designed, based on sliding mode observer (SMO) theory.
The FDI scheme is based on a second order sliding mode observer (SOSMO).
The adaptive control scheme and optimal slip estimator, which are built with the second-order sliding mode observer, can overcome all of the drawbacks in the studies in the existing literature.
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