Powertrain Model Selection and Reduction for Real Time Control Algorithm Design and Verification in Rapid Controller Prototyping Environment 2010-01-0236
New systems or functionalities have been rapidly introduced for fuel economy
improvement. Active vibration suppression has also been introduced. Control
algorithm is required to be verified in real time environment to develop
controller functionality in a short term. Required frequency domain property
concept is proposed for representation of target phenomena with reduced models.
It is shown how to select or reduce engine, transmission and vehicle model based
on the concept.
Engine torque profile which has harmonics of engine rotation is required for
engine start, take-off from stand still, noise & vibration suppression and
misfire detection for OBD simulation. An engine model which generates torque
profile synchronous to crank angle was introduced and modified for real time
simulation environment where load changes dynamically.
Selected models and control algorithms were modified for real time environment
and implemented into two linked universal controllers. A virtual vehicle on
those controllers was run. System behavior was measured. Crank angle signal
delayed slightly. The delay is small and does not effect on controller
functionality verification. Plant model selection and reduction can be made
systematically with the proposed method. That will help effective rapid
controller prototyping in shorter time.
Citation: Togai, K., Kido, K., and Yamaura, H., "Powertrain Model Selection and Reduction for Real Time Control Algorithm Design and Verification in Rapid Controller Prototyping Environment," SAE Technical Paper 2010-01-0236, 2010, https://doi.org/10.4271/2010-01-0236. Download Citation