CAJ | 학술논문

超磁致伸缩驱动器具有响应快、输出应变大、机电转化效率高等优点，但因受超磁致伸缩材料内在的磁滞效应与磁-机耦合效应等因素影响，导致其输出位移存在较大滞环，大大降低了驱动器的输出位移精度，也影响了该材料及其致动器更广泛的应用。为了有效地设计和使用超磁致伸缩驱动器，需要建立准确描述其磁滞非线性的数学模型。在经典Preisach模型的基础上建立了超磁致伸缩驱动器的Preisach磁滞数值模型，并通过对Preisach限制三角形的离散划分，依赖大量实验数据辨识了该模型的参数，并进行了超磁致伸缩驱动器磁滞输出实验研究。实验结果表明：该Preisach磁滞模型能较好地描述准静态下超磁致伸缩驱动器的磁滞现象，对指导超磁致伸缩驱动器位移精度的提高具有一定意义。
초자치신축구동기구유향응쾌、수출응변대、궤전전화효솔고등우점，단인수초자치신축재료내재적자체효응여자-궤우합효응등인소영향，도치기수출위이존재교대체배，대대강저료구동기적수출위이정도，야영향료해재료급기치동기경엄범적응용。위료유효지설계화사용초자치신축구동기，수요건립준학묘술기자체비선성적수학모형。재경전Preisach모형적기출상건립료초자치신축구동기적Preisach자체수치모형，병통과대Preisach한제삼각형적리산화분，의뢰대량실험수거변식료해모형적삼수，병진행료초자치신축구동기자체수출실험연구。실험결과표명：해Preisach자체모형능교호지묘술준정태하초자치신축구동기적자체현상，대지도초자치신축구동기위이정도적제고구유일정의의。
The giant magnetostrictive actuator (GMA)has some advantages,such as fast response,large magnetostrictive strain,high electromechanical transformation efficiency and so on. However,the GMA exhibites nonlinear characteristics of magnetic-elastic coupling and frequency-dependent hysteresis,which severely hinders the accuracy of GMA’s output displacement as well as its further applications. In order to design and use the GMA effectively,a suitable hysteresis nonlinearity model should be established. A Preisach-based numerical model for describing the nolinear hysteresis of GMA was derived on the study of the classic Preisach model, and the Preisach restrict plane was discretized into Levels uniformly,and a lot of experiment data were carried to identify the parame-ters of Preisach-based numerical model. The results reveal that the hysteresis nolinear model can well describe the practical situation. It has guiding significance for improving the positioning precision of GMA.