Torque Weighting Vibration Dose Value to Improve Powertrain Calibration Process during Transient Torque Maneuvers Michigan Technological University

Format:

Book

Conference/Event

Author/Creator:

Furlich, Jon, author.

Contributor:

Blough, Jason

Robinette, Darrell

Conference Name:

Noise and Vibration Conference & Exhibition (2021-09-07 : Grand Rapids & Online, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

This paper investigates the application of torque weighting to vibration dose value as a means to enhance correlation of perceived drive comfort directly to driver pedals commands while rejecting uncorrelated inputs. Current industry standards for vehicle comfort are formulated and described by ISO2631, which is a culmination of research with single or multi-axis vibration of narrow or broadband excitation. The standard is capable of estimating passenger comfort to vibrations, however, it only accounts for reaction vibrations when viewed from a source-path-receiver paradigm. Metrics that account for torque inputs and the vibration response create actionable estimates of dosage due to driver torque requests without uncorrelated inputs eliminating the need for additional accelerometers and special compensating algorithms when road or track testing. The use case for the proposed modified metric is during the powertrain calibration process and more specifically driver commanded torque transients that cause torque reversal(s) of the drivertrain, e.g. coast to drive or drive to coast, through pedal tip-in or tip-out, respectively. The vehicle of used for this investigation is a body of frame, solid rear axle, full-size truck twin turbocharged GDI 10 speed automatic with four wheel drive. Accelerometer, noise, torque and CAN data acquired during road testing is presented along with the standard and modified dose metrics acquired in various gear states, powertrain calibration configurations and vehicle loading states

Notes:

Vendor supplied data

Publisher Number:

2021-01-1034

Access Restriction:

Restricted for use by site license