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Ratio Control of Metal Belt CVT
Technical Paper
2000-01-0842
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
A fuzzy logic ratio control algorithm for a metal belt CVT is suggested considering the on-off characteristics of the ratio control valve and the nonlinear characteristics of the CVT shift dynamics. In the fuzzy logic, variable computation time for the error of the ratio and the rate of the error is suggested depending on the velocity of the rate of the CVT ratio. Experimental results show that a desired speed ratio can be achieved at a steady state by the fuzzy logic in spite of the fluctuating primary pressure. In addition, it was found that a faster response and better robustness can be obtained when compared with those of the PID control. It is expected that the ratio control algorithm suggested in this study can be implemented in a prototype CVT.
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Authors
Citation
Kim, T., Kim, H., Yi, J., and Cho, H., "Ratio Control of Metal Belt CVT," SAE Technical Paper 2000-01-0842, 2000, https://doi.org/10.4271/2000-01-0842.Also In
References
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