Naslov
An Automated Model-Order Reduction Method for Automatic Transmissions

Autori
Ranogajec, Vanja ; Deur, Joško

Izvornik
Journal of dynamic systems, measurement, and control (0022-0434) 139 (2017), 7; 071004-1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Automatic transmissions, Mathematical model, Automated modeling, Model order reduction

Sažetak
New generation of torque converter automatic transmissions (AT) includes a large number of gears for improved fuel economy and vehicle performance, which leads to exponentially increasing number of shift types and shift events. In order to facilitate various numerical/simulation analyses of AT dynamics, shift control optimization, and control strategy design, a full-order AT model is usually reduced by eliminating state variables related to locked clutches in particular gears or shifts. The paper proposes an automated model-order reduction method for an arbitrary, user-specified clutch state, and demonstrates its application on an example of ten-speed AT. The method is based on determining the locked- clutch torque variables and their substitution into the full-order state-space model input vector, as well as finding a linear relation between the reduced-order and full-order model state-space variables.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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