A tristable compliant micromechanism with two serially connected bistable mechanisms

被引：11
|
作者：
Wang, Dung-An [1 ]
Chen, Jyun-Hua [1 ]
Huy-Tuan Pham [2 ]
机构：
[1] Natl Chung Hsing Univ, Grad Inst Precis Engn, Taichung 40227, Taiwan
[2] Univ Tech Educ, Fac Mech Engn, Ho Chi Minh City, Vietnam
来源：
MECHANISM AND MACHINE THEORY | 2014年 / 71卷
关键词：
Tristable micromechanism; Bistable; DESIGN; SIMULATION; SWITCH;
D O I：
10.1016/j.mechmachtheory.2013.08.018
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A tristable micromechanism with a bistable mechanism embedded in a surrounding bistable mechanism is developed. Three stable equilibrium positions are within the range of the linear motion of the mechanism. The proposed mechanism has no movable joints and gains its mobility from the deflection of flexible members. The tristability of the mechanism originates from the different actuation loads of the two bistable mechanisms. Finite element analyses are used to characterize the tristable behavior of the mechanism under static loading. An optimal design formulation is proposed to find the geometry parameters of the mechanism. Prototypes of the mechanism are fabricated by a simple electroforming process. The characteristics of the mechanism are verified by experiments. The force versus displacement curve of the mechanism exhibits the tristable behavior within a displacement range of 260 mu m. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：27 / 39
页数：13
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