An Automated Model-order Reduction Method for Automatic Transmissions
ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 139, No. 7, pp. 071004/1-72017New 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 10-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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Model Predictive Control for Automatic Transmission Upshift Inertia Phase🔗
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ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 139, No. 7, pp. 071004/1-7
2017
Cited by 12
▾
-
[1] Model Predictive Control for Automatic Transmission Upshift Inertia Phase🔗IEEE Transactions on Control Systems Technology, 2023
-
[4] Dynamic Modeling and Simulation of Double-Planetary Gearbox Based on Bond Graph🔗Mathematical Problems in Engineering, 2021
-
[5] Method of torque distribution between the axles and the wheels of the rear axle to improve the manageability of two-axle all-wheel drive vehicles🔗IOP Conference Series: Materials Science and Engineering, 2020
-
[6] Multi-objective parameter optimization of control profiles for automatic transmission double-transition shifts🔗Control Engineering Practice, 2019
-
[7] A modularization method of dynamic system modeling for multiple planetary gear trains transmission gearbox🔗Mechanism and Machine Theory, 2019
-
[8] Modeling and Formulation of Optimal Clutching Sequence in Automatic Transmission🔗Vehicle Power and Propulsion Conference, 2018
-
[9] Optimization-based assessment of automatic transmission double-transition shift controls🔗Control Engineering Practice, 2018