On the Design of New Planar Flapping Mechanism

• Main Authors: Shu-Hong Lin, 林書弘
• Other Authors: Jen-Yu Liu
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/t9wzyf

碩士 === 國立虎尾科技大學 === 動力機械工程研究所 === 92 === The planar flapping mechanism is a kind of mechanism that makes its two different links up and down motion. Generally, the types of planar flapping mechanism are classified into four types that are four-bar linkage with five-joints, five-bar linkage with seven joints, six-bar linkage with seven-joints and seven-bar linkage with nine-joints. The purpose of this research is to proceed systematic research for design of new planar flapping mechanism in order to obtain the new planar flapping mechanism. This research carrying on the analysis and inducement of the characteristics of topologic structure and establishing the design requirements and constraints from the present mechanism. Then, based on Yan''s creative mechanism design method, type synthesis of planar flapping mechanisms are proceed. By using weighted objectives method, higher feasible new planar flapping mechanisms are chosen, which include three of four-bar linkage type, four of five-bar linkage type, one of six-bar linkage type and eleven of seven-bar linkage type of new planar flapping mechanisms. In this research, the dimensional synthesis of four of new and one existing mechanisms are selected to proceed by using vector loop method and specified input and output relation. The kinematics analysis and computer simulation of those mechanism are carried for the purpose of examining the interference did not appear during motion and satisfying the design conditions in dimensional synthesis. This research is to design the new planar flapping mechanisms systematically. The principal and methods in the study can be the important reference basis for the design of planar flapping mechanism. The achievement of this research can also be applied to simulated bird fly vehicle design for planar flapping mechanism in industrial.