Finite Element Analysis of Vibration Modal of a New Type of Piezoelectric Walking Mechanism
-
摘要: 压电行走机构上的压电片在交流电信号激励下产生振动,使与地面接触的机构足部能产生微小的局部椭圆运动。为了分析激励信号的频率与机构出现的前进、倒走、左转、右转等运动姿态之间的关系,以便对机构运动姿态进行精确控制,从机构的结构和工作机理出发,提出了一种新型的压电行走机构,利用有限元分析软件ANSYS对机构的振动元件以及机构本身进行了模态分析和谐响应分析。研究了该机构振动模态与运动姿态之间的关系,初步对机构出现的"倒走"等新现象给出了合理的解释。Abstract: Excited by alternative current,the piezoelectric patch on the piezoelectric walking mechanism will vibrate and makes the feet of the piezoelectric walking mechanism produce local elliptical motion.In order to analyze the relationship between the frequency of excitation signal and mechanism moving states,such as moving forward,moving backward,left-handed rotation,right-handed rotation,and to control mechanism moving states precisely,a new type of piezoelectric walking mechanism was proposed based on the working principle of structure.Modal analysis and response analysis of the vibration component of mechanism was carried out using finite element analysis software.The analysis of the relationship between vibration modal and moving states explained why the machine moved backward.
-
Key words:
- piezoelectric walking mechanism /
- finite element /
- vibration mode
-
[1] 李欣欣,卢全国,程光明,杨志刚,王忠伟.压电型步进式精密直线驱动器的实验研究[J].压电与声光,2005,27(2):136～138 [2] 许黎明,胡德金,张广鹏,赵晓明.压电陶瓷微位移驱动技术的研究[J].制造技术与机床,2003,(9):31～36 [3] Cheng G M,Yang Z G.Study of piezoelectric locomotive mecha-nism[J].Piezoelectric and Acoustooptics,2003,25(2) [4] 赵韩,吕召全,沈健.压电式微位移机构的现状与趋势[J].现代机械,2001,(4):33～36 [5] 罗怡,龚振邦,孙麟治,汪勤悫.双压电薄膜微机器人驱动器的模态分析[J].高技术通讯,2001,(3):85～87 [6] 钱晋武等.微小机器人移动机构研究[J].高技术通讯,1999,(1):18～21 -
点击查看大图
计量
- 文章访问数: 119
- HTML全文浏览量: 8
- PDF下载量: 3
- 被引次数: 0
下载:
