Design and Investigations into the Piezobender Controlled Servovalve
Electrohydraulic servo drives can be found in many industrial applications. A typical design of a servovalve uses the known torque motor. The main concept of designing the modification of the servovalve described in the paper was concern about the application of a piezobender as an actuator, working between nozzles as a flapper, at a control stage. The paper presents and investigates the design of a power amplifier for piezobenders and a digital controller for an electrohydraulic servo valve with a piezobender element. The article shows and discusses the main concept of design and the results of experimental investigation.
Algirdas V. Valiulis, Olegas Černašėjus and Vadim Mokšin
D. Sędziak and R. Regulski, "Design and Investigations into the Piezobender Controlled Servovalve", Solid State Phenomena, Vols. 220-221, pp. 520-525, 2015