Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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A Study on the Elevator Overbalance-Ratio Control and Improved Scheme for Safety

엘리베이터 오버밸런스율 제어와 안전을 위한 개선방안 연구

  • Lee, Ho-Cheol (Department of Electronic & Electrical Engineering, Pusan National University) ;
  • Choi, Young-Kiu (Department of Electrical Engineering, Pusan National University)
  • Received : 2013.07.17
  • Accepted : 2013.09.02
  • Published : 2013.12.31
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Abstract

An elevator is driven by the friction between the pulley and wire rope. A balancing counter weight is connected to the elevator car with a wire rope. This structure is essential to drive elevators while it always has weight unbalance problems on each side. The overbalance-ratio of elevators may be an important factor for safety and structural efficiency; however, it is not yet clearly defined in the Requirements of Korea Elevator Inspection. This paper describes these "weight unbalance ratio" for control of elevators to reduce the number of accidents. It includes the analysis of current elevator maintenance situations and also proposes some fundamental improvement schemes for safety.

엘리베이터는 도르래와 와이어로프 사이의 마찰력으로 구동된다. 균형추는 카의 반대편에 와이어로프로 연결되어 있다. 도르래를 기준으로 항상 무게의 불균형이 발생되는 이러한 구조는 엘리베이터 구동의 핵심이 된다. 이러한 구조 때문에 엘리베이터의 오버밸런스는 구조적 효율과 안전성 요인의 중요한 요소가 된다. 그러나 국내의 승강기 검사 기준에는 아직까지 이러한 부분이 명확하게 기준으로 정의되어 있지 않다. 이 논문에서는 엘리베이터의 사고를 줄이기 위하여 이러한 무게 불균형율 제어에 대하여 기술하였다. 또한 현재 엘리베이터 유지관리 현황을 분석해 보고 안전을 위한 근본적인 개선방안을 제안하고자 한다.

Keywords

References

  1. Korea Elevator Safety Institute, "Korea Elevator History for 100 Years", 2010.
  2. Ministry of Security and Public Administration, "A Study on the Elevator Safety Inspection Improvement based on the Accident Cases", 2009.
  3. Winfried Quadfasel, Brakes for Lift Systems, pp. 2-3, March 2004.
  4. Kyung-Taek Chung, Dong-Bok Kim, "An Experimental Study of Spring Acting Rope Brake for Lift", SARK Summer conference, pp. 1258-1261, 2011.
  5. Joosup Jang, "Design Parameters Considering Friction Characteristics for Rope Brake System of Elevator", KSTLE, vol. 29, No. 3, pp. 171-179, June 2013. https://doi.org/10.9725/kstle-2013.29.3.171
  6. K. Rajaraman and S. K. Nagaraja, "An elevator speed-control system using squirrel-cage induction motors," IEEE Transactions on Industrial Electronics, vol. IE-31, no.2, pp.164-167, May 1984. https://doi.org/10.1109/TIE.1984.350063
  7. Hiromi Inaba, K. Hirasawa, Takeki Ando, Mitsuyuki Hombu, and M. Nakazato, "Development of a high-speed elevator controlled by current source inverter system with sinusoidal input and output", IEEE Transactions on Industry Applications, vol. 28, no. 4, July 1992.
  8. N. Mutoh, N. Ohnuma, A. Omiya, and M. Konya, "A motor driving controller suitable for elevators," IEEE Transactions on Power Electronics, vol. 13, no. 6, pp. 1123-1134, Nov, 1998. https://doi.org/10.1109/63.728339
  9. D.N. Dyck and P.E. Caines, "The logical control of an elevator," IEEE Transactions on Automatic Control, vol. 40, no. 3, pp. 480-486, Mar 1995. https://doi.org/10.1109/9.376063