This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Preview Control of Active Vehicle Suspensions Based on a State and Input Estimator
Annotation ability available
Sector:
Language:
English
Abstract
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.
Recommended Content
Authors
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.Also In
Developments in Tire, Wheel, Steering, and Suspension Technology
Number: SP-1338; Published: 1998-02-13
Number: SP-1338; Published: 1998-02-13
References
- Bender, E.K. 1968 “Optimum Linear Preview Control with Application to Vehicle Suspension,” ASME Journal of Basic Engineering 90 2 213 221
- Yoshimura, T. Edokoro, K. 1993 “An Active Suspension Model for Rail/Vehicle Systems with Preview and Stochastic Optimal Control,” Journal of Sound and Vibration 116 3 507 519
- Roh, H.-S. Park, Y. 1997 “Observer-Based Wheelbase Preview Control of Active Vehicle Suspensions,” Korea Society of Mechanical Engineers
- Huisman, R.G.M. 1994 “A Controller and Observer for Active Suspensions with Preview,” Eindhoven University of Technology, Department of Mechanical Engineering
- Antonio, M. Masao, N. 1992 “Optimal Preview Control of Rear Suspension Using Nonlinear Neural Networks,” Proceeding of the International Symposium on Advanced Vehicle Control 117 122
- Roh, H.-S. Park, Y. 1996 “Design of Active Suspension Controller for Commercial Vehicles,” Proceedings of International Symposium on Advanced Vehicle Control 77 86
- Park, Y. Stein, J.L. 1989 “Steady State Optimal State and Input Observer for Discrete Stochastic System,” ASME Journal of Dynamic Systems, Measurement and Control 111 2 121 127
- Hac, A. Youn, I. 1993 “Optimal design of active and semi-active suspensions including time delays and preview,” ASME Journal of Vibration and Acoustics 115 498 508
- Franklin, G.F. Powell, J.D. Workman, M.L. 1990 “Multivariable and Optimal Control,” Digital Control of Dynamic Systems 2nd Addison Wesley 417 482
- Roh, H.-S. Park, Y. 1997 “Stochastic Optimal Preview Control of Active Suspension,” Vehicle System Dynamics
- Kwak, B.-H. 1993 “A Study on the Robust Active Suspension Controller Design,” Korea Advanced Institute of Science and Technology, Dept. of Mechanical Engineering