Inside a direct-drive servo-valve (DDV), the motion of the spool controlling the direction of the hydraulic fluid flow is directly actuated by an electrical motor. Due to the small stroke needed, it is possible to use a linear amplified piezoelectric actuator directly connected to the spool. The aim of this paper is to investigate how to design the power and control electronics of a DDV based on a linear amplified piezoelectric actuator to take full advantage of such a motor. In particular, it will be shown that the voltage applied on the piezoelectric stacks may be successfully controlled by use of four-quadrant choppers with the benefits that the injected electrical charge stored in their capacity can be recovered. This leads to the low-consumption scheme presented which can be easily fed by a boost converter from the aircraft 28 Vdc.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Efficient Control of a Piezoelectric Linear Actuator Embedded Into a Servo-valve for Aeronautic Applications


    Beteiligte:
    Sente, P.A. (Autor:in) / Labrique, F.M. (Autor:in) / Alexandre, P.J. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2012


    Format / Umfang :

    9 Seiten, 27 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Servo valve with asymmetrical redundant piezoelectric actuator

    BERTRAND JEAN-LUC / MAILHAN CATHERINE | Europäisches Patentamt | 2020

    Freier Zugriff

    SERVO VALVE WITH ASYMETRICAL REDUNDANT PIEZOELECTRIC ACTUATOR

    BERTRAND JEAN-LUC / MAILHAN CATHERINE | Europäisches Patentamt | 2017

    Freier Zugriff

    Development of Piezoelectric Servo Flap Actuator

    Duquette, Scott / Wei, Fu-Shang (John) | AIAA | 2007


    AERONAUTIC CRAFT

    SHCHEPOCHKINA YULIYA ALEKSEEVNA | Europäisches Patentamt | 2018

    Freier Zugriff

    AERONAUTIC APPARATUS

    SHCHEPOCHKINA JULIJA ALEKSEEVNA | Europäisches Patentamt | 2016

    Freier Zugriff