Shift Pattern Fuzzy Control of Automatic Transmission for Ride Quality Improvement

승차감 향상을 위한 자동변속기의 퍼지제어

  • Published : 2002.05.01


In general, jerk phenomenon appeared because of gear changing, when a vehicle starts off or climbs an incline. Therefore, it makes ride quality worse. In this paper, an optimal pattern of automatic transmission was designed using fuzzy logic in order to improve ride quality. After del eloping fuzzy rule for shift pattern control of automatic transmission, dynamic characteristics (i.e. acceleration, velocity, distance and so on) were simulated using dynamic model of a car. To do this he powertrain model of a vehicle with automatic transmission including torque converter, gear box, and final gear drive - from engine to tire - is developed.


Automatic Transmission;Fuzzy Control;Powertrain


  1. Scientific Systems Co., 1995, Active Suspension using Preview Information and Model Predictive Control, Scientific Systems Company Monthly Report
  2. 현대자동차중앙연구소, 1996, Design Theory of Automatic Transmission
  3. 서영덕, 여문수, 이승종, 1999, '퍼지논리를 이용한 차량구동력 제어 시스템,' 한국자동차공학회논문집 Vol. 6, Number 5
  4. Powertrain Library for Easy 5, 1999, User Manual Ricardo Powertrain Library Version
  5. 자동차공학회, 1996, 자동차기술핸드북(기초, 이론편)
  6. Masashi Fujiwara, 1992, Automotive Engineering, Over Vocational Training Association
  7. Gillespie, T. D., 1992, Fundamentals of Vehicle Dynamics, SAE
  8. Lucau, G. G., 1986, Road Vehicle Performance, Gordon and Breach Publishers
  9. Witold Pedrycz, 1989, Fuzzy Control and Fuzzy System, Research Studies Press LTD.
  10. M. Sugeno, M. Nishida, 1985, Fuzzy Control of Model Car,' Fuzzy Sets and Syst, Vol. 16
  11. Zadeh, L. A., 1965, 'Fuzzy Set,' Inf. Control, Vol. 8
  12. Klir, G. J. and Folger, T. A., 1988, Fuzzy Sets Uncertainty and Information, Prentice Hall
  13. 이근진, 1995, 'Design of Fuzzy Control System using Micro-Genetic Algorithm,' 중앙대학교, 석사학위논문