Title :
A pseudo-feedback linearization formulation for uncertain wet friction
Author :
Thompson, David F.
Author_Institution :
Dept. of Mech. Ind. & Nucl. Eng., Cincinnati Univ., OH, USA
Abstract :
Some automotive clutches, in particular the torque converter bypass clutch, are now often required to operate in continuous slip for certain periods of time. The presence of negative slope in the friction characteristic can present a local region of instability, leading to stick-slip or shudder. Under the assumption of continuous slip, it is shown that an elementary form of feedback linearization can be applied, based upon a nominal friction law. Conditions are given under which the error in feedback linearization due to an uncertain friction law introduces a sector-bounded nonlinearity, thus implying conditions for robust stability
Keywords :
absolute stability; automobiles; clutches; feedback; friction; linearisation techniques; mechanical stability; sliding friction; automotive clutches; continuous slip; pseudo-feedback linearization; robust stability; sector-bounded nonlinearity; torque converter bypass clutch; uncertain wet friction; Automotive engineering; Engines; Equations; Force feedback; Friction; Fuel economy; Industrial control; Robust stability; Torque control; Torque converters;
Conference_Titel :
Decision and Control, 1995., Proceedings of the 34th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-2685-7
DOI :
10.1109/CDC.1995.479139
