Active Front Steering (Part 1): Mathematical Modeling and Parameter Estimation

2004-01-1102

03/08/2004

Event
SAE 2004 World Congress & Exhibition
Authors Abstract
Content
Active Front Steering (AFS) provides an electronically controlled superposition of an active angle to the steering wheel angle. This steering system developed by ZF Lenksysteme and BMW AG enables driver dependent as well as automatic steering interventions. The permanent mechanical connection between steering wheel and road wheels remains. Since the AFS system was recently introduced together with the new BMW 5 series, the most of the investigations of steering systems do not include the dynamic behavior of such mechatronic actuators. On the other hand, these kind of models are required to design control algorithms and model based monitoring functions that provide the desired accuracy and real-time algorithms that run on a series electronical control unit. This paper summarizes a validated mathematical model of the AFS actuator including 8 rigid bodies, 46 constraint relations and a synchronus motor.
Meta TagsDetails
DOI
https://doi.org/10.4271/2004-01-1102
Pages
11
Citation
Klier, W., and Reinelt, W., "Active Front Steering (Part 1): Mathematical Modeling and Parameter Estimation," SAE Technical Paper 2004-01-1102, 2004, https://doi.org/10.4271/2004-01-1102.
Additional Details
Publisher
Published
Mar 8, 2004
Product Code
2004-01-1102
Content Type
Technical Paper
Language
English