Analogies between simple mechanical systems and electrohydraulic and electromechanical servomechanism

Alimhillaj, Parid and Minisci, Edmondo and Dallavedova, Matteo D.L. and Dorri, Altin (2024) Analogies between simple mechanical systems and electrohydraulic and electromechanical servomechanism. International Journal of Mechanics and Control, 25 (1). pp. 45-52. ISSN 1590-8844 (https://doi.org/10.69076/jomac.2024.0007)

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Abstract

Contemporary flight control system design necessitates the use of intricate models to analyse individual components or subsystems. However, fundamental and synthetic models with sufficient accuracy are essential for preliminary design, monitoring, or diagnostic purposes. Understanding primary flight commands, particularly those represented as position servo commands with a high degree of accuracy, is greatly enhanced through analogies drawn between simple mechanical systems and electrohydraulic as well as electromechanical servomechanisms. By employing these analogies, complex systems can be simulated using simpler yet still accurate models. In this study, we present methods of simplification aimed at simulating electrohydraulic and electromechanical servomechanisms using a second-order dynamic system with two degrees of freedom. This approach preserves the desired accuracy in the simulation while comparing favourably with results obtained from more complex validated mathematical models in MATLAB/Simulink.

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