The nonlinear characteristic analysis of giant magnetostrictive actuator based on ezperiment
Based on the experiment study of giant magnetostrictive actuator(GMA) which applied in noncircular turning process, the function among the current, the axis-direction position of giant magnetostrictive material(GMM) and magnetic fields intensity is established. Combined with the function, the nonlinear dynamics model and differential equation of the GMA are established by taken the mandril as the research object. The relationship between current and displacement at different frequency are studied, and the effects on hysteresis loops in different bias magnetic field and inner damp are discussed. The results indicate that the relationship between output displacement and input excitation current forms hysteresis loop, and the excitation frequency has distinct effect on its area and loop swing trend position, and there are resonance and anti-resonance characteristics. And the bias magnetic field and inner damp have great effect on the hysteresis loop. Meanwhile, by compared with the hysteresis loop in the case of using the linear expression between magnetic fields intensity and the current, the correctness of fitting relationship in this paper has been proved, and the deficiency of existing formula has been indicated.
giant magnetostrictive actuator(GMA) nonlinear hysteresis characteristic surface fitting resonance and anti-resonance
Li dong Yuan huiqun Dai Zhigang
College of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China College of Sciences, Northeastern University, Shenyang, 110004,China
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
1244-1247
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）