Abstract:
A gear position decision method used in automated mechanical
transmission is introduced. The algorithm of the method is
composed of a driving environment and driver's intention
estimator, the shift schedules suit for each typical driving
environment and driver's intention situation, and an inference
ligic to determine the most proper gear position for the present
situation. The estimator identifies the driving environment and
driver's intention features which are divided into some typical
models. Based on the identified results, the algorithm works out
the best gear position. It just simulates the course of driver's
making gear position decision when driving a automobile with
manual transmission. The test results show that the automated
mechanical transmission with the method gives less unnecessary
shifting and more proper gear position than common shift
schedules.
Key words: Automatic
transmission Gear position decision Driving environment
identification Fuzzy logic control
*
This project
is supported by National Natural Science Foundation of China. Manuscript received on
July 27, 1998; revised manuscript August 28, 1998
|