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Road Dynamic Simulation for Vehicle Driveline Experiments
Technical Paper
2018-01-5016
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
Automotive Technical Papers
Language:
English
Abstract
The dynamic simulation technology for a powertrain test bench is discussed in
this paper. Dynamic emulation of mechanical loads is the key technology of
laboratory tests in cases when the test site is moved from the road to an indoor
laboratory test bench. The combustion engine is replaced by an electric drive
motor, which replicates the torque and speed signature of an actual engine. The
road load resistance of the vehicle on a real test road is accurately simulated
using a load dynamometer motor. In this study, we analyzed and compared the
advantages and disadvantages of the inverse dynamics model and the forward model
based on the speed closed loop control method, from the perspective of the
high-order, nonlinear, and multi-variable characteristics of the test bench
system. We developed a load simulation method based on the speed adaptive
predictive control (SAPC). It avoids the complex algorithm of closed loop speed
compensation and reduces the effects of inaccurate model parameters on the
control precision of the simulation system. On the test bench, the vehicle start
and dynamic shift process are simulated, and the test results are presented here
to demonstrate successful emulation.
Authors
Topic
Citation
Wang, J., Li, W., Zhang, X., Yi, P. et al., "Road Dynamic Simulation for Vehicle Driveline Experiments," SAE Technical Paper 2018-01-5016, 2018, https://doi.org/10.4271/2018-01-5016.Also In
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