Preview Control of Active Vehicle Suspensions Based on a State and Input Estimator

981121

02/23/1998

Event
International Congress & Exposition
Authors Abstract
Content
Wheelbase preview control system that uses state and input estimator to reconstruct state and preview information is proposed. Conventional preview control systems use Kalman-Bucy filters of augmented system, which is composed of dynamics of a vehicle and a road profile for estimation scheme. Use of road model makes control performance sensitive to model errors that are inevitable in real applications. Compared with the conventional preview control systems, the proposed control system adopts a state and input estimator to estimate state and road input simultaneously. The state and input estimator does not require a road model, which makes it not robust to road model errors. However, the state and input estimator is sensitive to measurement noises, since it uses inverse dynamics of a system to estimate unknown inputs. To cope with the susceptibility of the estimator to measurement noises, we will develop a state and input estimator that minimizes the noise effect on control performance. We demonstrate performance improvement of the proposed control system over the conventional ones through computer simulations of a half car model.
Meta TagsDetails
DOI
https://doi.org/10.4271/981121
Pages
10
Citation
Roh, H., and Park, Y., "Preview Control of Active Vehicle Suspensions Based on a State and Input Estimator," SAE Technical Paper 981121, 1998, https://doi.org/10.4271/981121.
Additional Details
Publisher
Published
Feb 23, 1998
Product Code
981121
Content Type
Technical Paper
Language
English