Fault Detection and Isolation for a Rocket Engine Valve

In this article a fault detection and isolation scheme based on H∞ theory is presented for a rocket engine actuator valve. The simulation model of the engine corresponds to a Vulcain 2-like rocket engine used to study the applicability and capabilities of FDI techniques towards real-time validation in an engine test-bench. The obtained FDI design is capable of detecting and estimating (biases, ramps and including oscillatory) fault for the selected valve in a robust manner. The design methodology allows reuse of the design process for other valves with minor modifications and tuning.