Study of leakage model for servo valve

This paper presents a new empirical leakage model of valve. The whole hydraulic system is studied: the system´s model utilizing the proposed leakage formula is compared against another model, a known semi-empirical model employing the idea of pseudo section in flowrates. One statistical analysis approach is applied to modeling, using the noise-corrupted physical data. The robustness of models is verified with two new independent situations. Results from fitting and verification have shown that the system model with the proposed leakage formula describes the system dynamics more properly and matches the real responses better.