Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Dynamically-Correct Automatic Transmission Modeling

동적 특성을 고려한 자동변속기의 모델링

  • 김정호 (서울대학교 공과대학 전기공학부 제어계측신기술연구센터) ;
  • 조동일 (정회원, 서울대학교 공과대학 전기공학부)
  • Published : 1997.09.01
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Abstract

An automatic transmission is an important element of automotive power systems that allows a driving convenience. Compared to a manual transmission, however, it has a few problems in efficiency, shift feel, and maintenance. To improve these, it is imperative to understand the dynamics of automatic transmissions. This paper develops a dynamically-correct model of an automatic transmission, using the bond graph method. The bond graph method is ideally suited for modeling power systems, because the method is based on generalized power variables. The bond graph method is capable of providing correct dynamic constraints and kinematic constraints, as well as the governing differential equations of motion. The bond graph method is applied to 1-4 in-gear ranges, as well as various upshifts and downshifts of an automatic transmission, which allows an accurate simulation of an automatic transmission. Conventional automatic transmission models have no dynamic constraint, which do not allow correct simulation studies.

Keywords

References

  1. SAE paper no. 654465 Measuring Automatic Transmission Shft Performance R. L. Anderson;R. L. Bierley
  2. Proc. of American Control Conf. v.2 Adaptive Control of Automotive Transmissions K. Glitzentstein;J. K. Hedrick
  3. The New York Times Shifting auto gears by computer L. M. Fisher
  4. Proc. of Symp. on Simulation of Ground Vehicles and Transportation Systems Modeling and Simulation of thePowertrain Dynamics of Vehicles Equipped with Automaic Transmission A. K. Tucgu;K. V. Hebbale;A. A. Alexandridis;A. M. Karmel
  5. presented at the ASME Winter Annual Meeting Bond Graph Modelig of Dominant Dynamics of Automotive Powertrains D. Hrovat;W. E. Tobler;M. C. Trangarides
  6. M.S.M.E. Thesis Modeling and Control of an Automatic Transmission J. Runde
  7. ASME J. Dyn. Sys. Meas. Contr. v.111 no.4 Automotive powertrain Modeling for Control D. Cho;J. K. Hedrick
  8. Dept. of Mech. Eng., Ph. D. Thesis Nonlinear Control Methods for Automotive Powertrain Systems D. Cho
  9. System Dynamics: A Unified Approach(2nd Ed.) D. C. Karnopp;D. L. Margolis;R. C. Rosenberg
  10. Proc. of American Cotrol Conf. v.1 Dynamic Modeling and Analysis of the Hydraulic System of Automotive Automatic Transmissions A. M. Karmel
  11. Principles of Operation: THM 440-T4(2nd Ed.) GM Hyera-matic
  12. ASME J. Dyn. Sys. Meas. Contr. v.110 no.2 Modeling and Analysis of the Dynamics of a Variable Displacement Vane Pump with a Pivoting Cam A. M. Karmel
  13. Proc. of American Cotnrol Conf. v.1 A Methodlogy for Modeling the Dynamics of the Mechanical Paths of Automotive Drivetrains with Automatic Step-Transmssions A. M. Karmel