Design and testing of a bidirectional magnetostrictive-hydraulic hybrid actuator

Ellison, Joshua A.; Sirohi, Jayant; Chopra, Inderjit

doi:10.1117/12.539919

Cited by 15 publications

(13 citation statements)

References 14 publications

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“…The values will decrease in the structure of no outside highpermeability shell and no inside Terfenol-D rod, as shown in Fig.2. Using equation (5) for calculation, the quasistatic inductance value of solenoids coil in transducer is 5.04mH (μ r =10 is used in its calculation), similarly to its experimental result of 5.15mH. Fig.2 introduces the inductance-frequency characteristics of solenoids coil in different structure.…”

Section: Impedance Characteristic Of Magnetostrictive Transducermentioning

confidence: 89%

“…For magnetostrictive materials, due to the magnetomechanical effect, the change in strain along the axial direction can be produced by the magnetic field, leading to the conversion of the electric energy into mechanical energy [3][4]. Magnetostrictive materials exhibit highly power density and energy conversion efficiency, more suitable to be considered to design smart transducer [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Research on Dynamic Characteristic of High-Power Magnetostrictive Transducer in high frequency application

Yan¹,

Zhang²,

Li³

et al. 2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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The emphasis of this paper is to study the high frequency dynamic characteristic of highpower transducer based on giant magnetostrictive material. A prototype of high-power magnetostrictive transducer using in kHz magnitude frequency situation is introduced. The accurate inductance relation in magnetostrictive transducer is calculated, and its dynamic impedance characteristics of the transducer are summarized. Then, the experimental test-bench is set, the impedance-frequency characteristics and high frequency dynamic characteristics are discussed. The results show that magnetostrictive transducer has predominant mechanical strain effect at mechanical resonance situation, its magnetostriction coupling coefficient can up to 0.592, and has 0.05mm output strain at 1200Hz frequency. Researches and its results in this paper can helps for the calculation and construction of magnetostrictive transducer using in high frequency application.

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Section: Impedance Characteristic Of Magnetostrictive Transducermentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Research on Dynamic Characteristic of High-Power Magnetostrictive Transducer in high frequency application

Yan¹,

Zhang²,

Li³

et al. 2015

Proceedings of the 5th International Conference on Advanced Design and Manufacturing Engineering

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show abstract

“…Their device achieved a stroke of up to 1.3 mm with a blocked force of up to 6.5 N. Hydraulic amplification can also be achieved with smart material pumps driven at high frequency along with fluid rectification valves. Various pumps have been developed which utilize either magnetostrictive [8][9][10] or piezoelectric materials [11,12]. The current designs are too bulky and complex for use in engine mounts due to the presence of various pumping componentsaccumulator, check valves, direction control valve, and pistontype hydraulic actuator.…”

Section: Introductionmentioning

confidence: 99%

Hydraulically Amplified Terfenol-D Actuator for Adaptive Powertrain Mounts

Chakrabarti

Dapino

2011

Journal of Vibration and Acoustics

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A magnetostrictive actuator with a stroke of ±1 mm and a blocked force of ±25 N has been developed based on a Terfenol-D driver and a hydraulic stroke amplification mechanism. A mechanical model for this magneto-hydraulic actuator (MHA) is formulated by combining linear piezomagnetic relations for Terfenol-D and a lumped parameter mechanical system model describing the system vibrations. Friction at the fluid seals is described by the LuGre model. The model accurately describes the frequency-domain behavior of the actuator in mechanically-blocked and mechanically-free conditions. The MHA is benchmarked against a commercial electromagnetic driver used in active powertrain mounts in terms of mechanical performance (blocked force and unloaded displacement) and electrical power consumption. Measurements show that the MHA achieves more than twice the frequency bandwidth of the commercial device in the free displacement response, along with comparable static displacements. The commercial device produces higher blocked forces in the frequency range of 10 Hz to 120 Hz beyond which the generated forces are comparable up to 400 Hz. Spectral analysis reveals significant second order components in the commercial actuator displacement response which are absent in the MHA. Further, the MHA achieves superior performance than the commercial actuator operated at maximum current (6 A) with power consumption identical to that of the commercial actuator operated at minimum current (4 A).

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“…Besides the piezohydraulic actuators mentioned above, other kind of solid-fluid hybrid actuators are also developed recently, which are driven by magnetostrictive (Terfenol-D) and electrostrictive (PMN, PMN-PT) stacks. Previously, the magnetostrictive hydraulic actuator presented limited frequency of 10 Hz, at which the achieved unloaded velocity and blocked force are 15.25 cm/s and 44.5 N (Ellison et al, 2004). A nonlinear time-domain model for the hybrid magnetostrictive hydraulic actuators was formulated and validated experimentally (Chaudhuri et al, 2006(Chaudhuri et al, , 2009.…”

Section: Introductionmentioning

confidence: 99%

Development of piezohydraulic actuator driven by piezomembrane pump

Kan

Wang

Zhang

et al. 2011

Journal of Intelligent Material Systems and Structures

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A piezohydraulic actuator (piezopump-driven cylinder system) has the advantage over the conventional contact/non-contact piezoelectric motors in terms of achieving large thrust, high velocity, and long traveling distance. In this study, a serial-connection 5-chamber piezomembrane pump (SCCPP) was introduced and used for replacing piezostack pumps so as to decrease cost of piezohydraulic actuators. The border-upon piezomembranes work in anti-phase, a SCCPP is equivalent to several single-chamber pumps running in series. The theoretical study suggests that the performance of a SCCPP-driven actuator depends mainly on the efficiency of check valves, structural parameters of piezomembrane/pump chamber/cylinder, the number of pump chambers, and liquid bulk modulus. A piezomembrane has an optimal thickness ratio (metal to piezoelectric) for the actuator to achieve maximal power. A SCCPP-driven actuator was fabricated and tested under three/four/five chambers running. The testing results show that the thrust, velocity, power, and even optimal frequency of the piezohydraulic actuator all increase linearly with number of working chambers and driving voltage. At 180 V and 280 Hz, the achieved thrust, velocity, power, and step length from the actuator under five piezomembranes running are 75 N, 9.8 mm/s, 184.5 mW, and 35.2 µm, respectively, which are about 2.1/2.7/5.7/2.7 times than those of three piezomembranes running.

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Design and testing of a bidirectional magnetostrictive-hydraulic hybrid actuator

Cited by 15 publications

References 14 publications

Research on Dynamic Characteristic of High-Power Magnetostrictive Transducer in high frequency application

Research on Dynamic Characteristic of High-Power Magnetostrictive Transducer in high frequency application

Hydraulically Amplified Terfenol-D Actuator for Adaptive Powertrain Mounts

Development of piezohydraulic actuator driven by piezomembrane pump

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