Design and Finite Element Analysis of the Vibrator of a New Type Multi-mode Linear Ultrasonic Motor
In the present paper,a prototype for multi-mode linear ultrasonic motor has been proposed and designed.It is designed using a combination of the first longitudinal and the first bending mode.The piezoelectric ceramics convert energy using the longitudinal d33 effect which allows an improved reliability,large vibration amplitudes and excellent piezoelectric coupling.The normal direction motion of the driving element is excited by the first longitudinal mode.The lateral motion of the driving element is excited by the first bending mode.The resulting displacement of the driving element is transmitted by the frictional force between the motor and the rail in a linear motion.The transducer is designed so that these vibration modes are degenerated.The basic design is discussed and simulations are compared with the experimental results.The paper analyzes the modals of the composite vibrator by using the ANSYS finite element software and the influence of the vibrators structural parameters on the modals of the LUSM stator.Finally,the vibrator structure of the motor and the motors own structures are designed.Experimental results show that the motor characteristics can be optimized for a particular task by choosing the appropriate operating parameters such as exciting voltage,exciting frequency and normal force.
linear ultrasonic motor finite element analysis composite vibrator modal
Ping Luo Tiemin Zhang Liang Li Jin Xin
College of Engineering,South China Agricultural University,Guangzhou 510642,China
国际会议
南京
英文
232-238
2007-09-09（万方平台首次上网日期，不代表论文的发表时间）