Abstract: An investigation is made to the friction clutch engagement
control of automotive AMT systems based on a nonlinear dynamic
model with double inputs. According to friction torque
transmission characteristics during clutch engagement, an
equivalent, fully controllable and linearized model and the
feedback linearization control are derived from the original
system with nonlinearities via homomorphic transforms. By the
resulting mathematical modeling, computer simulations are made
both for the original nonlinear and feedback linearized systems
with incorporation of ordinary PID controllers to follow ideal
vehicle dynamic responses. It has been shown by comparison
between the two sets of numerical results that the feedback
linearization control designed for the nonlinear system is of
fine accuracy and robustness in model tracking behaviors of
clutch engagements.
Key words: Automated
clutch Nonlinear system dynamics Feedback linearization
*
This project
is supported by National Natural Science Foundation of China. Manuscript
received on December 29, 1998; revised manuscript March 2, 1999
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