An Analytical Control Systems Approach to Steering Shudder 951254
Historically, power steering shudder, a vibration which occurs while steering a vehicle at low speeds, has been approached with systematic component-swapping experiments. This approach was time consuming and did not necessarily yield satisfactory results. In this paper it is shown that steering shudder can be analytically approached as a control system with a closed-loop limit cycle caused by the interaction of the chassis and the steering system. This approach provides a metric for determining a vehicle's propensity to shudder and allows quick predictions of the results of changing components.
The approach is model-based, and incorporates chassis and hydraulic system components. Results obtained from the control systems analysis have been validated by a vehicle study, which showed a strong correlation between subjective evaluations and the stability metric provided by the analysis. The control systems approach has been used to develop robust shudder solutions for a number of vehicle platforms.
Citation: Smith, J., Ferries, G., and Arbanas, R., "An Analytical Control Systems Approach to Steering Shudder," SAE Technical Paper 951254, 1995, https://doi.org/10.4271/951254. Download Citation
Author(s):
Jarett M. Smith, Gary R. Ferries, R. Larry Arbanas
Affiliated:
General Motors
Pages: 5
Event:
SAE Noise and Vibration Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Proceedings of the 1995 Noise and Vibration Conference-P-291
Related Topics:
Control systems
Power steering
Steering systems
Hydraulic systems
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