Experimental Study of Sensor Fault-Tolerant Control for an Electro-Hydraulic Actuator Based on a Robust Nonlinear Observer

Nonlinear observer based sensor fault tolerant control for nonlinear systems

This paper deals with the problem of sensor fault tolerant control for Takagi-Sugeno nonlinear systems. Firstly, a residual generator is designed in order to detect and isolate sensor faults. Secondly, a nonlinear observer based controller, adopting the so-called parallel distributed compensation structure is designed. This controller is based on a weighted blending of the estimated states prov...

Robust Takagi-Sugeno sensor fault tolerant control strategy for nonlinear system

Fault Identification in an Electro-Hydraulic Actuator and Experimental Validation of Prognosis Based Life Extending Control

In this paper we present an application of fault identification and control reconfiguration in the context of a high performance aircraft. A second order divided difference filter is used to identify an internal leakage fault in an electrohydraulic actuator found in the aircraft elevator. The identified fault information is then utilized in the formulation of an aircraft systems model for progn...

Observer Based Fault-tolerant Control for Fuzzy Systems with Sensor and Actuator Failures

This paper proposed an observer based fault-tolerant control approach for the fuzzy T-S systems with sensors and actuators faults. By establishing the actuator fault and sensor fault models, an observer based fuzzy output feedback fault tolerant controller is developed and new stabilization conditions of the fuzzy fault tolerant control systems are given, which are formulated in terms of linear...

Robust Control of a Hydraulic Cylinder using Observer-based Nonlinear Controllers: Theoretical Development and Experimental Validation

Hydraulic cylinders are actuators with strongly nonlinear behavior. They are widely used in several industrial areas, such as heavy machines, cranes, robots, and so on. The dynamical behavior of hydraulic differential cylinders can be described by a coupled set of nonlinear differential equations. Motion control of power trains, drive trains, or even actuators has been in the focus of several s...