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Abstract: Research
on dynamic characteristics of giant magnetostrictive thin films is
crucial important for further description of its kinemics behavior of
micro mobile mechanism, therefore a new method about its dynamic
characteristics analysis on giant magnetostrictive thin films is
proposed , whose principle is to analyze its dynamic behavior of giant
magnetostrictive thin films based on force oscillation theory, by
establishing its force oscillation model on which equivalent drive
torque, converted from magnetostrictive drive stress, is exerted based
on equivalent deformation of compound magnetostrictive thin films beam.
Simulations and experiments on the model show its effectiveness to
describe the dynamic behavior of giant magnetostrictive thin films. This
method has significance for reference to its dynamics analysis, as well
as structural design and optimization as finally to realize its close-up
control on giant magnetostrictive thin films actuator by magnetic field
sensor.
Key words: Giant magnetostriction thin films Equivalent torque Dynamic
model Dynamic characteristics
CLC No: TP242.2
国家自然科学基金(60275034，50275021)和辽宁省自然科学基金(20021061，20032119)资助项目.
Received 20040803, received in revised form 20050117
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