Design and Evaluation of a Direct Drive Valve Actuated by Piezostack Actuator

Design and Evaluation of a Direct Drive Valve Actuated by Piezostack Actuator

This paper presents performance characteristics of a new type of direct drive valve (DDV) system driven by a piezostack actuator. The flexible beam mechanism is employed to amplify the output displacement from the piezostack actuator. After describing the operational principle of the proposed piezo...

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Veröffentlicht in:Advances in Mechanical Engineering 2013, Vol.2013 (2013), p.1-12
Hauptverfasser: Jeon, Juncheol, Nguyen, Quoc-Hung, Han, Young-Min, Choi, Seung Bok
Format: Artikel
Sprache:eng
Schlagworte:
Actuators
Design engineering
Displacement
Mathematical analysis
Mathematical models
Matlab
Spools
Valves
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container_end_page 12
container_issue 2013
container_start_page 1
container_title Advances in Mechanical Engineering
container_volume 2013
creator Jeon, Juncheol
Nguyen, Quoc-Hung
Han, Young-Min
Choi, Seung Bok
description This paper presents performance characteristics of a new type of direct drive valve (DDV) system driven by a piezostack actuator. The flexible beam mechanism is employed to amplify the output displacement from the piezostack actuator. After describing the operational principle of the proposed piezo DDV system, the governing equation of the whole piezo DDV system is then obtained by integrating the equations of the valve components. Based on the proposed model, significant structural components of the piezo DDV system are designed in order to achieve operational requirements (operating frequency: over 100 Hz; flow rate: 20 liter/Min.). An optimal design method is proposed for obtaining the geometry of the flexible beam mechanism by considering spool displacement, required operating frequency, and available space of the valve. After deciding the specific geometric dimensions of the piezo DDV system, a PID control algorithm is designed to enforce the spool position to the desired position trajectories by activating the piezostack actuator. Characteristics and control performances of the proposed piezo DDV system are evaluated using the MATLAB Simulink.
doi_str_mv 10.1155/2013/986812
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subjects Actuators
Design engineering
Displacement
Mathematical analysis
Mathematical models
Matlab
Spools
Valves
title Design and Evaluation of a Direct Drive Valve Actuated by Piezostack Actuator
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