Self-Tuning Optimal Control of an Active Suspension

892485

11/01/1989

Event
SAE International Truck and Bus Meeting and Exposition
Authors Abstract
Content
The objective of this paper is to develop a self-tuning optimal control of an active suspension. An active suspension composed of an identifier and a controller is proposed in this paper. Although control strategies on active (or semi-active) suspensions have been investigated during the past few decades, some problems are not well understood yet. One of them arising from the ride control of an active suspension is that when the weight and the moments of inertia of the sprung mass are varied, the feedback gains of the controller should vary with the variation of parameters accordingly. Therefore, the identifier is proposed before the controller is designed. In the real situations, the parameter variation may occur when loadings on vehicles vary - either from passengers or payloads, especially, in the case of loading on a truck. An identification structure using parallel model reference adaptive system (MRAS) is proposed to identify the true parameters. Figures and numerical data will be presented as a comparison between using a self-tuning optimal control (with parameter identification) and an optimal control (from nominal parameters). Improvements on vehicle responses are expected.
Meta TagsDetails
DOI
https://doi.org/10.4271/892485
Pages
12
Citation
Chen, H., and Guenther, D., "Self-Tuning Optimal Control of an Active Suspension," SAE Technical Paper 892485, 1989, https://doi.org/10.4271/892485.
Additional Details
Publisher
Published
Nov 1, 1989
Product Code
892485
Content Type
Technical Paper
Language
English