Simulation-Based System Reliability Analysis of Electrohydraulic Actuator with Dual Modular Redundancy

“Simulation-Based System Reliability Analysis of Electrohydraulic Actuator with Dual Modular Redundancy” published as a paper at the 12th International Fluid Power Conference 2020 in Dresden, Germany.

Abstract. The paper describes a failure detection system of an electro-hydraulic actuator with dual modular redundancy based on ESI's Hybrid Twin™ concept. ESI's Hybrid Twin™ is a combination of a virtual twin, which operates in parallel with the actuator and represents its ideal behavior, and a digital twin, which identifies possible failures based on the residuals of sensor readings. Simulation-based system reliability analysis helps in creating a data set to train the digital twin with machine learning algorithms. A systematic approach to detect failures based on decision trees as well as the process used to analyze the quality of the result is described.