A Study on the Dynamic Characteristics of the Bi-modal Tram with All-Wheel-Steering System

전차륜 조향 장치를 장착한 굴절궤도 차량의 주행특성에 관한 연구

  • Published : 2007.08.31

Abstract

The bi-modal tram guided by the magnetic guidance system has two car-bodies and three axles. Each axle of the vehicle has an independent suspension to lower the floor of the car and improve ride quality. The turning radius of the vehicle may increase as a consequence of the long wheel base. Therefore, the vehicle is equipped with the All-Wheel-Steering(AWS) system for safe driving on a curved road. Front and rear axles should be steered in opposite directions, which means a negative mode, to minimize the turning radius. On the other hand, they also should be steered in the same direction, which means a positive mode, for the stopping mode. Moreover, only the front axle is steered for stability of the vehicle upon high-speed driving. In summary, steering angles and directions of the each axle should be changed according to the driving environment and steering mode. This paper proposes an appropriate AWS control algorithm for stable driving of the bi-modal tram. Furthermore, a multi-body model of the vehicle is simulated to verify the suitability of the algorithm. This model can also analyze the different dynamic characteristics between 2WS and AWS.

References

  1. Duane R Pillar, Eric E. Braun(1995) 'All-Wheel Steering System for Heavy Truck Applications', SAE Technical paper, 952680
  2. Schroeder C., Duchow, A. (1997), 'Heavy truck handling performance analysis in vehicle test and computer simulation', Tire science & technology, Vol.25 No.2, pp.119-136 https://doi.org/10.2346/1.2137534
  3. Thomas D. Gillespie (1992), 'Fundamentals of Vehicle Dynamics', SAE, Inc., Warrendale, PA, USA
  4. 宅野高明(1994), '車.運動性能とシャシ.メカニズム', グランプリ出版, 東京, Japan
  5. Hans B. Pacejka (2002). 'Tire and Behicle Dynamics', SAE, Inc., Warrendale, PA, USA
  6. ADAMS 2003 User Manual (2003), MSC. Software Corporation, USA
  7. 목재균, 임정환, 조세현(2005), '신에너지 Bimodal 저상굴절차량 기술 개발', 대한기계학회, 기계저널 제45권 제12호, pp.46-49
  8. Mark Sherman., George Myers (2000) 'Vehicle Dynamics Simulation for Handling Optimization of Heavy Trucks', SAE Technical paper, 2000-01-3437
  9. 문경호, 목재균, 장세기, 박우성(2006), '굴절차량의 전 차륜 조향 시스템 적용에 관한 검토', 한국철도학회 2006년도 춘계학술대회논문집, pp.1-6
  10. D. de Bruin, A.A.H. Damen, A. Pogromsky (2000), 'Backstep-ping Control for Lateral Guidance of All-Wheel Steered Multiple Articulated Vehicles', IEEE Intelligent Transportation Systems Conference Proceedings, pp.95-100
  11. D. de Bruin, P.P.J. van den Bosch (1999), 'Modelling and control of a double articulated vehicle with four steerable axles', Proceedings of the American Control Conference, pp.3250-3254