Rainer Haas, Evgeny Lukachev, Rudolf Scheidl,
"An RC Filter for Hydraulic Switching Control with a Transmission Line Between Valves and Actuator"
, in M. Ivantysynova, in International Journal of Fluid Power, Vol. 15, Nummer 3, Taylor & Francis, Seite(n) 139-151, 11-2014, ISSN: 1439-9776
Original Titel:
An RC Filter for Hydraulic Switching Control with a Transmission Line Between Valves and Actuator
Sprache des Titels:
Englisch
Original Kurzfassung:
Hydraulic switching control with fast switching valves may excite unacceptable hydraulic and mechanical oscillations. Particularly if transmission lines are used, which have many oscillation modes, the avoidance of resonances by a proper timing of the switching pulses is hardly feasible. Then, passive filters may be a good solution. A simple RC filter applied to a cylinder drive with a transmission line to the switching valves is investigated by a transfer function analysis, numerical methods, and experiments. Properties of the dynamic behaviour are elucidated by approximate relations derived from the transfer function by asymptotic methods. A simple dimensioning rule recommends sizing the filter resistance close to the hydraulic impedance of the transmission line. The capacitance?s sizing is a trade off between a potential reduction of the resonance peak due to the cylinder natural frequency and a softness of the hydraulic drive system.
Forschungs-