منابع مشابه
Inverse Compensation for Hysteresis in Magnetostrictive Transducers
This paper addresses the development of inverse compensation techniques for a class of ferromagnetic transducers including magnetostrictive actuators. If unaccommodated, the hys-teresis and nonlinear dynamics can produce severe loss of control authority and potential instabilities when the actuators are incorporated in control design. In this work, hysteresis is modeled through the domain wall ...
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Flexural ultrasonic transducers are principally used as proximity sensors and for industrial metrology. Their operation relies on a piezoelectric ceramic to generate a flexing of a metallic membrane, which delivers the ultrasound signal. The performance of flexural ultrasonic transducers has been largely limited to excitation through a short voltage burst signal at a designated mechanical reson...
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Flexural transducers are well suited for power emission in fluids, thanks to their low mechanical impedance. Their performance is nevertheless compromised by the occurrence of non-linearities stemming from high-deflection andlor high electric field. This experimental work catalogs typical alterations of the transducers' dynamics resulting specifically from high electrical field non-linearities....
متن کاملA Structural-magnetic Strain Model for Magnetostrictive Transducers
This paper addresses the modeling of strains generated by magnetostrictive transducers in response to applied magnetic elds. The measured strains are dependent upon both the rotation of moments within the material in response to the eld and the elastic properties of the material. The magnetic behavior is characterized through the consideration of the Jiles-Atherton mean eld theory for ferromagn...
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We consider the modeling of strains generated by magnetostrictive materials in response to applied magnetic elds. The active or external component of the strain is due to the rotation of magnetic moments within the material to align with the applied eld. This is characterized through consideration of the Jiles-Atherton mean eld theory for ferromagnetic hysteresis in combination with a quadratic...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1961
ISSN: 0001-4966
DOI: 10.1121/1.1936805