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- 저자 : 현진섭(J. S. Hyun) (검색결과 2 건)
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스프링 블록 모델에 의한 평면 링크 기구의 자동 설계기법
현진섭(J. S. Hyun),징강원(G. W. Jang),박정훈(J. H. Park),남상준(S. J. Nam),김윤영(Y. Y. Kim) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Linkage mechanisms are most common motion-converting devices. In traditional linkage design practice, a specific linkage type such as a four- or six-bar linkage is first selected and then its joint locations and link lengths are varied until a desired linkage is found. In this approach, the selection of the initial linkage configuration would require many trials and errors unless the designer is well experienced. The objective of this research is to establish a so-called automatic mechanism synthesis method that determines not only the linkage type but also linkage dimensions during the synthesis process. After investigating several modeling possibilities, we developed an equivalent planar linkage model composed of a set of rigid rectangular blocks connected to each other by stiffness-varying springs. If necessary, link mechanism is further tuned by using shape optimization.
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강성가변 스프링연결 블록 모델을 이용한 평면 링크기구 자동 합성
남상준(S. J. Nam),현진섭(J. S. Hyun),장강원(G. W. Jang),김윤영(Y. Y Kim) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
A linkage mechanism in a machine or a robot is a device to convert an input motion into a desired motion. Machines and robots having improper mechanisms can be unstable, unnecessarily complicated or energy-inefficient. However, tradition linkage mechanism design practice based on trial-and-error approaches or mere size/shape changes of already-available mechanisms often results in improper designs. This observation has motivated us to develop a so-called “automatic” design methodology that can yield optimal at least sub-optimal mechanisms automatically by computer simulation and optimization algorithms. The specific target in this work is to design planar linkages consisting of links and revolute joints. One of the key ingredients to realize the automatic design is to find a computational efficient planar mo del that can simulate any possible planar linkage combinations; otherwise the automatic design process would require impractical computation time. The model proposed by our group is a so-called spring-connected rigid block model consisting of a group of rigid blocks connected by zero-length elastic springs. This work shows how this new idea works. We also pose several challenge problems to be solved in the future.
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