Browse Publications Technical Papers 2019-01-1529

The Utilization of Onboard Sensor Measurements for Estimating Driveline Damping 2019-01-1529

The proliferation of small silicon micro-chips has led to a large assortment of low cost transducers for data acquisition. Production vehicles on average exploit more than 60 on board sensors and that number is projected to increase beyond 200 by 2020 per vehicle. Such a large increase in sensors is leading the fourth industrial revolution of connectivity and autonomy. One major downfall to installing many sensors is compromises in their accuracy and processing power due to cost limitations for high volume production. The same common errors in data acquisition such as sampling, quantization, and multiplexing on the CAN bus must be accounted for when utilizing an entire array of vehicle sensors. A huge advantage of onboard sensors is the ability to calculate vehicle parameters during a daily drive cycle to update ECU calibration factors in real-time. One such parameter is driveline damping that changes with gear state and drive mode. A damping value is desired for every gear state and recent years has seen an increasing number of forward gear ratio’s ranging from 8-10 in production vehicles. This study will estimate such a driveline damping value while analyzing the influence of the afore mentioned data acquisition parameters. Final conclusions are drawn for implementing best practices for processing vehicle sensor data.


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