功能材料与器件学报
功能材料與器件學報
공능재료여기건학보
JOURNAL OF FUNCTIONAL MATERIALS AND DEVICES
2010年
1期
41-46
,共6页
超磁致伸缩执行器%磁滞模型%磁机耦合
超磁緻伸縮執行器%磁滯模型%磁機耦閤
초자치신축집행기%자체모형%자궤우합
giant magnetostrictive actuator%hysteresis model%magneto-mechanical coupling
通过分析超磁致伸缩材料磁畴在外加磁场作用下的运动规律,建立了超磁致伸缩执行器基于磁化机理的磁滞模型.该模型结合执行器的工作条件,充分考虑了材料的非线性和滞回特性.模型包括磁致伸缩和磁化两个子模型,磁致伸缩模型描述了材料应变λ跟磁化强度M之间的关系;磁化模型描述了有效磁场H_(eff)、无磁滞磁化M_(an)、可逆磁化M_(rev)、不可逆磁化M_(irr)、总磁化强度M之间的关系.通过对实验测试结果进行分析,验证了模型能准确描述输入电流I与输出应变λ之间的关系.
通過分析超磁緻伸縮材料磁疇在外加磁場作用下的運動規律,建立瞭超磁緻伸縮執行器基于磁化機理的磁滯模型.該模型結閤執行器的工作條件,充分攷慮瞭材料的非線性和滯迴特性.模型包括磁緻伸縮和磁化兩箇子模型,磁緻伸縮模型描述瞭材料應變λ跟磁化彊度M之間的關繫;磁化模型描述瞭有效磁場H_(eff)、無磁滯磁化M_(an)、可逆磁化M_(rev)、不可逆磁化M_(irr)、總磁化彊度M之間的關繫.通過對實驗測試結果進行分析,驗證瞭模型能準確描述輸入電流I與輸齣應變λ之間的關繫.
통과분석초자치신축재료자주재외가자장작용하적운동규률,건립료초자치신축집행기기우자화궤리적자체모형.해모형결합집행기적공작조건,충분고필료재료적비선성화체회특성.모형포괄자치신축화자화량개자모형,자치신축모형묘술료재료응변λ근자화강도M지간적관계;자화모형묘술료유효자장H_(eff)、무자체자화M_(an)、가역자화M_(rev)、불가역자화M_(irr)、총자화강도M지간적관계.통과대실험측시결과진행분석,험증료모형능준학묘술수입전류I여수출응변λ지간적관계.
Based upon an analysis of the motion law of giant magnetostrictive material magnetic domain under magnetic field, a hysteresis model of magnetization-based for a giant magnetostrictive actuator is established. The model incorporates operating conditions of the actuator and fully considers nonlinear and hysteresis characteristics of the material. It includes two sub-models: magnetostriction and magnetization. The relationship between the strain λ and the magnetization M is illustrated in the magnetostriction model. The magnetization model describes the relationships amongst the effective field H_(eff), the anhysteretic magnetization M_(an), the reversible magnetization M_(rev), the irreversible magnetization M_(irr) and the total magnetization M, The model is proved to be able to describe the relation accurately between the input current I and the output strain λ by analyzing the experimental result.
