Title :
Application of direct adaptive generalized predictive control to an automatic gear box with a continuous variable transmission
Author :
Ramond, G. ; Dumur, D. ; Boucher, P.
Abstract :
Even if predictive control has proved to be an efficient strategy, the maintenance of a high level of performances may be impossible to reach with a fixed predictive controller in case of important parameter variations. A solution is then to develop an adaptive version of the predictive controller for systems with parametric disturbances. This paper presents a direct version of adaptive generalized predictive control, based on the work of Wang and Henriksen. The algorithm is rewritten in an original form minimizing a performance index, using a least-squares type strategy for the controller parameter online identification, including a conditional updating test in the adaptation loop. An application of this structure to an engine drive with an automatic gear box with continuous variations of the reduction ratio is finally developed. The model of this system is derived as a starting point from the well-known two-masses problem. In this study, only the engine speed is measured, the acceleration (variable to be controlled) remains not measurable
Keywords :
acceleration control; adaptive control; identification; least squares approximations; minimisation; online operation; optimal control; performance index; predictive control; road vehicles; acceleration control; adaptation loop; adaptive predictive controller; automatic gear box; conditional updating test; continuous variable transmission; controller parameter online identification; direct adaptive generalized predictive control; engine drive; engine speed measurement; fixed predictive controller; least-squares type strategy; parameter variations; performance index minimization; Adaptive control; Automatic control; Control systems; Engines; Gears; Performance evaluation; Predictive control; Programmable control; Testing; Velocity measurement;
Conference_Titel :
Control Applications, 2000. Proceedings of the 2000 IEEE International Conference on
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-6562-3
DOI :
10.1109/CCA.2000.897441