A novel piezoelectric double-flapper servovalve pilot stage: Operating principle and performance prediction

Paolo Tamburrano; Riccardo Amirante; Elia Distaso; Andrew R. Plummer

doi:10.1115/FPMC2018-8864

A novel piezoelectric double-flapper servovalve pilot stage: Operating principle and performance prediction

Paolo Tamburrano, Riccardo Amirante, Elia Distaso, Andrew R. Plummer

Politecnico di Bari

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

9 Citations (SciVal)

Abstract

This paper proposes a novel architecture for the pilot stage of electro-hydraulic two-stage servovalves that does not need a quiescent flow and a torque motor as well as a flexure tube to operate. The architecture consists of two small piezoelectric valves, coupled with two fixed orifices, which allow variation of the differential pressure at the main stage spool extremities in order to move it with high response speed and accuracy. Each piezoelectric valve is actuated by a piezoelectric ring bender, which exhibits much greater displacement than a stack actuator of the same mass, and greater force than a rectangular bender. The concept is intended to reduce the influence of piezoelectric hysteresis. In order to assess the validity of the proposed configuration and its controller in terms of spool positioning accuracy and dynamic response, detailed simulations are performed by using the software Simscape Fluids. At 50% amplitude the -90? bandwidth is about 150Hz.

Original language	English
Title of host publication	BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018
Publisher	American Society of Mechanical Engineers (ASME)
Pages	V001T01A032
Number of pages	10
ISBN (Electronic)	9780791851968
DOIs	https://doi.org/10.1115/FPMC2018-8864
Publication status	Published - 14 Sept 2018
Event	BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018 - Bath, UK United Kingdom Duration: 12 Sept 2018 → 14 Sept 2018

Conference

Conference	BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018
Country/Territory	UK United Kingdom
City	Bath
Period	12/09/18 → 14/09/18

Bibliographical note

Paper No. FPMC2018-8864
This research has been supported by the European Commission under the Marie Curie Intra-European fellowship Programme. EC Grant Agreement n. 701336, H2020 MSCA Individual Fellowship: Development of a novel servovalve concept for aircraft (DNSVCFA). Start date: 01/09/2017, End date: 19/10/2019, Location of the project: University of Bath

Keywords

Piezoelectric
Ring bender
Servovalve
Simscape

ASJC Scopus subject areas

Fluid Flow and Transfer Processes
Control and Systems Engineering

Access to Document

10.1115/FPMC2018-8864

Cite this

A novel piezoelectric double-flapper servovalve pilot stage: Operating principle and performance prediction. / Tamburrano, Paolo; Amirante, Riccardo; Distaso, Elia et al.
BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018. American Society of Mechanical Engineers (ASME), 2018. p. V001T01A032.

Research output: Chapter or section in a book/report/conference proceeding › Chapter in a published conference proceeding

Tamburrano, P, Amirante, R, Distaso, E & Plummer, AR 2018, A novel piezoelectric double-flapper servovalve pilot stage: Operating principle and performance prediction. in BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018. American Society of Mechanical Engineers (ASME), pp. V001T01A032, BATH/ASME 2018 Symposium on Fluid Power and Motion Control, FPMC 2018, Bath, UK United Kingdom, 12/09/18. https://doi.org/10.1115/FPMC2018-8864

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abstract = "This paper proposes a novel architecture for the pilot stage of electro-hydraulic two-stage servovalves that does not need a quiescent flow and a torque motor as well as a flexure tube to operate. The architecture consists of two small piezoelectric valves, coupled with two fixed orifices, which allow variation of the differential pressure at the main stage spool extremities in order to move it with high response speed and accuracy. Each piezoelectric valve is actuated by a piezoelectric ring bender, which exhibits much greater displacement than a stack actuator of the same mass, and greater force than a rectangular bender. The concept is intended to reduce the influence of piezoelectric hysteresis. In order to assess the validity of the proposed configuration and its controller in terms of spool positioning accuracy and dynamic response, detailed simulations are performed by using the software Simscape Fluids. At 50% amplitude the -90? bandwidth is about 150Hz.",

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N2 - This paper proposes a novel architecture for the pilot stage of electro-hydraulic two-stage servovalves that does not need a quiescent flow and a torque motor as well as a flexure tube to operate. The architecture consists of two small piezoelectric valves, coupled with two fixed orifices, which allow variation of the differential pressure at the main stage spool extremities in order to move it with high response speed and accuracy. Each piezoelectric valve is actuated by a piezoelectric ring bender, which exhibits much greater displacement than a stack actuator of the same mass, and greater force than a rectangular bender. The concept is intended to reduce the influence of piezoelectric hysteresis. In order to assess the validity of the proposed configuration and its controller in terms of spool positioning accuracy and dynamic response, detailed simulations are performed by using the software Simscape Fluids. At 50% amplitude the -90? bandwidth is about 150Hz.

AB - This paper proposes a novel architecture for the pilot stage of electro-hydraulic two-stage servovalves that does not need a quiescent flow and a torque motor as well as a flexure tube to operate. The architecture consists of two small piezoelectric valves, coupled with two fixed orifices, which allow variation of the differential pressure at the main stage spool extremities in order to move it with high response speed and accuracy. Each piezoelectric valve is actuated by a piezoelectric ring bender, which exhibits much greater displacement than a stack actuator of the same mass, and greater force than a rectangular bender. The concept is intended to reduce the influence of piezoelectric hysteresis. In order to assess the validity of the proposed configuration and its controller in terms of spool positioning accuracy and dynamic response, detailed simulations are performed by using the software Simscape Fluids. At 50% amplitude the -90? bandwidth is about 150Hz.

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A novel piezoelectric double-flapper servovalve pilot stage: Operating principle and performance prediction

Abstract

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Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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