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A Study on Suspension Optimization of the Korean Personal Rapid Transit Vehicle

한국형 PRT차량의 현가장치 최적화 연구

  • Kim, Hyun Tae (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Kim, Jun Woo (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Cho, Jeong Gil (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Koo, Jeong Seo (Dept. of Rolling Stock System, Seoul Nat'l Univ. of Science and Technology) ;
  • Kang, Seokwon (On-Demand Transit Research Team, Korea Railroad Research Institute) ;
  • Jeong, Raggyo (On-Demand Transit Research Team, Korea Railroad Research Institute)
  • 김현태 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과) ;
  • 김준우 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과) ;
  • 조정길 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과) ;
  • 구정서 (서울과학기술대학교 철도전문대학원 철도차량시스템공학과) ;
  • 강석원 (한국철도기술연구원 수요응답형교통연구단TFT) ;
  • 정락교 (한국철도기술연구원 수요응답형교통연구단TFT)
  • Received : 2015.08.18
  • Accepted : 2016.01.18
  • Published : 2016.03.01

Abstract

In this study, running stability and ride quality analyses, applying the 'ISO 3888 (double lane change)' and 'ISO 2631-1' (mechanical vibration and shock) tests, were performed for the suspension optimization of the Korean personal rapid transit (PRT) vehicle. The suspension optimization results for running stability and ride quality were derived by applying the multiresponse surface method. From the comparisons of the optimization results for different ratios of the objective functions of running stability and ride quality, we derived the best objective function ratio of 3.9-to-6.1 to improve both the running stability and the ride quality. With the optimized results, the suspension stiffness became 30.68 N/mm, between the value of the $S_2$ and $S_3$ models, and the damping coefficient equaled that of the $D_1$ model. When compared with the suspension of the current PRT vehicle, the roll angle, yaw rate, sideslip angle, and ride comfort were improved by 0.37, 0.37, 2.8, and 5, respectively.

Keywords

Personal Rapid Transit;Running Stability;Ride Quality;Optimization;Suspension

Acknowledgement

Supported by : 서울과학기술대학교

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