An Automated Model-Order Reduction Method for Automatic Transmissions (CROSBI ID 238899)
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Podaci o odgovornosti
Ranogajec, Vanja ; Deur, Joško
engleski
An Automated Model-Order Reduction Method for Automatic Transmissions
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.
Automatic transmissions, Mathematical model, Automated modeling, Model order reduction
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Podaci o izdanju
139 (7)
2017.
071004-1-071004-7
objavljeno
0022-0434
10.1115/1.4035607