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10. Internationales Fluidtechnisches

8. - 10. März | 2016
in Dresden

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12:40   ics       Großer Saal

A complete analysis for single rod electro hydrostatic actuators

First author:
Hakan Çaliskan, Middle East Technical University, Turkey


In the current study a variable speed pump controlled hydrostatic circuit where an underlapped shuttle valve is utilized to compensate the unequal flow rate of a single rod actuator is analyzed. Parameters of the shuttle valve are included in the system analysis, rather than treating it as an ideal switching element as handled in literature. A linearized model of the system is obtained. An inverse kinematic model, which calculates the required pump drive speed for a desired actuator speed and given pilot pressure input, is formed. A numerical stability analysis program is developed, and the stability of all possible shuttle valve spool positons is determined. The theoretical findings are validated by non-linear simulation model responses.