An Analytical Control Systems Approach to Steering Shudder
951254
05/01/1995
- Event
- Content
- 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.
- Pages
- 5
- 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.