Notice of RetractionDesign and research of piezoelectric actuator with ER fluid valve

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

A long stroke precise actuator driven by piezoelectric stack which acts in together with ER fluid valve is presented in this paper. The actuator is characterized by high-speed, long stroke, low power consumption, etc. The prototype of the actuator is fabricated by precise manufacturing. Simulations and experiments showed that the piezoelectric actuator has high efficiency and good performance. With a voltage less than 100 V, the precise actuator can move 0.2 mm per second and its power consumption is only 27 mW. A robust active high frequency ER valve is developed for the piezoelectric actuator. A high voltage power is used to increase the valve´s responsiveness with frequency up to 500 Hz. A symmetrical two valves and PZT stack pump increases actuator´s resolution.