Nonlinear Behaviors of Giant Magnetostrictive High Power Ultrasonic Transducer

摘要：

GMHPUT has a wide range of potential application in industrial. However, nonlinearity between exciting current and output displacement spoils GMHPUTs performance. To explore the nonlinearity behaviors of GMHPUT, a nonlinear dynamic model was established. The bifurcation diagrams, phase portrait, Poincare mapping diagrams, amplitude spectrum, Lyapunov exponent, etc. which demonstrate dynamical characteristics of the system were obtained by numerical integration. Analysis indicates: Nonlinearity of response could be improved by increasing of damping coefficient. Chaos would appear when stiffness of the system is low. At last experiments were done to verify the model. Calculation results and experimental results show a good agreement.

关键词： giant magnetostrictive material(GMM) giant magnetostrictive high power ultrasonic transducer(GMHPUT) nonlinear dynamics bifurcation chaos

作者: ZENG Haiquan ZENG Gengxin

作者单位: Department of Mechanical Engineering, Xiamen University of Technology, Xiamen,361024 School of Mechanical and Automotive Engineering, South China University of Technology,Guangzhou, 510

会议类型: 国际会议

会议名称: 4th International Conference on Measuring Technology and Mechatronics Automation(第四届检测技术与机电自动化国际会议 ICMTMA 2012)

会议地点: 三亚

会议语种:英文

页码: 918-922

在线出版日期: 2012-01-06（万方平台首次上网日期，不代表论文的发表时间）