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Design, analysis and simulation of magnetostrictive actuator and its application to high dynamic servo valve
Makaram Singaperumal
Published in
2010
Volume: 157
   
Issue: 2
Pages: 185 - 197
Abstract
Flapper-nozzle type Electro Hydraulic Servo Valve (EHSV) operated by conventional torque motor actuators has been used in wide range of industrial applications. As their bandwidths are limited, they are not suitable for high-speed applications. The work presented in this paper deals with the mechatronic approach for the design of a magnetostrictive actuator with flexure amplifier and a magnetically biased magnetostrictive actuator for application in high frequency flapper-nozzle servo valve. A magnetostrictive actuator has been designed, built and integrated into an existing flapper-nozzle servo valve by replacing the torque motor. Incorporating the dynamics of the magnetostrictive actuator, the dynamics of the valve was simulated. Necessary parameters for the actuator have been arrived by finite element model. No load flow characteristics are analyzed and compared with experimental values. Step response has been compared with conventional valve. The results show that the valve has satisfactory static and dynamic characteristics for applications in high-speed actuation systems. © 2009 Elsevier B.V. All rights reserved.
About the journal
JournalSensors and Actuators, A: Physical
ISSN09244247
Open AccessNo
Concepts (24)
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    ACTUATION SYSTEMS
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    Analysis and simulation
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    ELECTRO-HYDRAULIC SERVO VALVE
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    Experimental values
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    Finite element models
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    HIGH DYNAMIC
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    High frequency
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    High-speed
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    High-speed applications
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    MAGNETOSTRICTIVE ACTUATOR
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    NO-LOAD FLOW
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    SERVO-VALVE
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    Static and dynamic
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    Torque motors
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    Actuators
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    Industrial applications
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    Linear motors
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    Mechatronics
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    Motors
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    Nozzle design
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    Permanent magnets
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    PNEUMATIC SERVOMECHANISMS
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    Servomotors
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    MAGNETOSTRICTIVE DEVICES