中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 15 No. 2 April 2005 |
Model of magnetostrictive actuator
LI Lin(李 琳), ZHANG Yuan-yuan(張媛媛)
（School of Jet Propulsion, Beijing University of Aeronautics and Astronautics,
Beijing 100083, China）
Abstract:The hysteresis of the magnetostrictive actuator was studied. A mathematical model of the hysteresis loop was obtained on the basis of experiment. This model depends on the frequency and the amplitude of the alternating current inputted to the magnetostrictive actuator. Based on the model, the effect of hysteresis on dynamic output of the magnetostrictive actuator was investigated. Then how to consider hysteresis and establish a dynamic model of a magnetostrictive actuator system is discussed when a practical system was designed and applied.
Key words: magnetostrictive actuator; hysteresis loop; dynamic feature
