NUMERICAL MODELING AND VIBRATION CONTROL OF TRANSDUCER IN ULTRASONICALLY ASSISTED MACHINING

摘要：

Ultrasonic assisted machining has been applied in machining brittle and hard material.The critical problem of ultrasonic assisted machining is to get a proper adaptive controller of the ultrasonic vibration.In this paper,a numerical vibration model is established by a mass-damper-elastic component.The loading effect on dynamics of ultrasonic transducer is investigated.The transfer function of transducer is obtained and simulation calculation model is carried out in Matlab.The effects of different damper and elastic component on frequency characteristic of ultrasonic transducer are found.The PID algorithm and the H∞ algorithm for vibration control are established and simulated in the Matlab Simulink,and proves both PID algorithm and H∞ algorithm can achieve the accurate and fast controlling results.Finally,some experiments are carried out to verify the simulation calculation.

关键词： Ultrasonic transducer Loading Vibration controller Ultrasonic assisted machining

作者: Zhi-li LONG Jian-jun ZOU Shuang ZHAO Wen-dong SUN Zhen-dong SUN

作者单位: Harbin Institute of Technology Shenzhen Graduate School, Shenzhen, 518000, China Department of Mechanics Engineering, Dongguan University of Technology, Dongguan, 523000, China

会议类型: 国际会议

会议名称: The 2016 Symposium on Piezoelectricity,Acoustic Waves and Device Applications(2016全国压电和声波理论及器件技术研讨会)

会议地点: 西安

会议语种:英文

页码: 283-287

在线出版日期: 2016-10-21（万方平台首次上网日期，不代表论文的发表时间）