• ISSN 0258-2724
  • CN 51-1277/U
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Volume 21 Issue 6
Dec.  2008
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Article Contents
WU Shijing, ZHU Enyong, LI Qunli, WANG Xiaosun. Simulation Research on Fuzzy Shift Strategy of Automobile[J]. Journal of Southwest Jiaotong University, 2008, 21(6): 756-761.
Citation: WU Shijing, ZHU Enyong, LI Qunli, WANG Xiaosun. Simulation Research on Fuzzy Shift Strategy of Automobile[J]. Journal of Southwest Jiaotong University, 2008, 21(6): 756-761.

Simulation Research on Fuzzy Shift Strategy of Automobile

  • Received Date: 21 Mar 2008
  • Publish Date: 25 Dec 2008
  • In order to avoid shift cycle in the process of fuzzy control for automatic transmission shift,a new fuzzy control strategy was designed.A shift map obtained from an experiment was divided into an upshifting map and a downshifting map,and two corresponding fuzzy controllers,upshifting controller and downshifting controller,were designed.It was put forward that the controllers should work in the light of the acceleration,i.e.,the system is controlled by the upshifting controller when the acceleration is positive,and it is controlled by the downshifting controller when the acceleration is negative or zero.A simulation model was built to achieve the control strategy,and a simulation was carried out to validate the correctness and feasibility of the fuzzy shift strategy designed.The simulation result shows that an automobile with this shift strategy can effectively avoid shift cycle even if it is running in a complicated driving condition and this shift strategy can obtain the optimal power and economic performances.

     

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