Optimal control of automated transmission engagement process

Tepeš, Bojan and Kasać, Josip and Deur, Joško (2012) Optimal control of automated transmission engagement process. = Optimal control of automated transmission engagement process. In: 2012 IEEE International Conference on Control Applications, CCA 2012, 03-05.10.2012., Dubrovnik, Croatia.

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Official URL: https://doi.org/10.1109/CCA.2012.6402737

Abstract

A back propagation through time algorithm is used to optimize control variable trajectories of an automated automotive transmission for the engagement task. The optimization criterion is to maximize the end vehicle speed, and minimize the dissipated clutch energy and the shuffle mode vibration content. The optimization gives optimal profiles of the engine speed and clutch slip speed state variables, which are then used as reference variables of an optimal feedback controller. Since the engagement is carried out over a finite time horizon, a time-variant form of the linear quadratic regulator (LQR) is designed. The design is based on a transformation of the nonlinear Riccati matrix equation into a linear differential equations in the controller gains using the properties of Kronecker product. The time-variant LQR controller is examined by computer simulation and compared with the constant-gain controller.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): automated transmission; automotive transmissions; back-propagation through time; clutch slip; control variable; controller gain; engine speed; finite time horizon; kronecker product; linear differential equation; linear quadratic regulator; LQR controller; optimal controls; optimal Feedback; optimization criteria; Riccati matrix equations; state variables; time variant; vehicle speed; computer simulation; controllers; differential equations; linear transformations; mathematical transformations; matrix algebra; vibrations (mechanical); optimization
Subjects: TECHNICAL SCIENCE
Divisions: 900 Department of Robotics and Production System Automation > 910 Chair of Engineering Automation
Indexed in Web of Science: Yes
Indexed in Current Contents: No
Citations JCR: 1 (12.09.2018.)
Date Deposited: 30 Apr 2015 11:06
Last Modified: 13 Dec 2018 15:22
URI: http://repozitorij.fsb.hr/id/eprint/3887

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