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고속 전환특성을 가진 자동부하전환 개폐기의 구동메커니즘의 동적 해석
정원선(Won Sun Chung),권병희(Byung Hee Kwon),안길영(Kil Young Ahn),오일성(Il Sung Oh) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
The automatic load transfer switch (ALTS) typically automatically transfers electrical loads from a normal<br/> electrical power source to an emergency electrical power source upon reduction or loss of normal power<br/> source voltage. It can also automatically re-transfer the load to the normal power source when the normal<br/> voltage has been restored within acceptable limits. The transfer operation of ALTS is accomplished by a<br/> spring-driven linkage mechanism. In this paper we build a dynamic model of driving mechanism for ALTS<br/> using ADAMS and checked the characteristics of the transfer operation. Finally we performed a detailed<br/> design of the driving mechanism through results of analysis and confirmed it to satisfy design requirements.
박태원(Tae-Won.Park),정원선(Won-Sun.Chung),한상원(Sang-Won.Han),김춘삼(Chun-Sam.Kim),채장수(Jang-Su.Chae),서현석(Hyun-Suk.Seo) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
The driving torque and damping cbaracteristic of a SEH(Strain Energy Hinge) used in a satellite deployment mechanism depend on the geometrical shape and material property of the. thin plate spring used in the SEH. To obtain the desired motion of a deployment system, the SEH must be designed carefully. The design factors of a SEH include curvature, length and fixing method of the thin plate spring. Design factors are analyzed using experiments but a computational method must be developed to design the SEH effectively.<br/> The buckling load of the SEH is the most important characteristic. to select the design factors. So in this paper: a computational method for the buckling analysis of a thin plate spring is presented. First, a nonlinear analysis method for the buckling load of a thin plate spring is presented. Next, finite element analysis of a presented method is applied to the SEH. Finally, the analysis result is compared with the testing result to show the effectiveness of the presented method.
평판스프링을 가진 열동형 과부하 릴레이 메커니즘의 모델링 및 동적해석
안길영(K. Y. Ahn),정원선(W. S. Chung),오일성(I. S. Oh),신봉수(B. S. Shin),오승우(S. W. Oh),강병덕(B. D. Kang) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
A thermal overload relay is a device that transmits the off signal to the magnetic contactor before an<br/> electric motor or machine is damaged due to over current. Such a relay generally uses a reversal mechanism<br/> to change rapidly the steady state into the configuration for transmitting the off signal. Here, the mechanism<br/> consists of a flexible flat spring and coil spring. Also, in such a relay, the bimetal used to compensate for the<br/> effect of surrounding temperature acts like a flat spring. In this paper, the dynamic behavior of the relay<br/> mechanism with a reversal mechanism is modeled and analyzed using ADAMS. The flexible flat spring is<br/> modeled using a beam element and its model is verified through the free vibration experiment of the spring.<br/> Comparing the simulation results of the relay with experimental responses, the derived dynamic model is<br/> verified.