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Performance of a Fail-Safe Active Suspension with Limited State Feedback for Improved Ride Quality and Reduced Pavement Loading in Heavy Vehicles
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English
Abstract
The increased number of heavy trucks on today's highways, along with the extended driving hours, resulted in increased demand for improved driving conditions and prompted concern about the dynamic pavement loads. The dynamic pavement loads are one of the major causes of pavement deterioration. Passive suspensions, while being very reliable and easily implementable, fall short of satisfying the various conflicting design requirements. The overwhelming improvement of ride quality resulting from the use of active suspensions seems to have overshadowed their effect on tire generated pavement damage. An in-plane tractor-semitrailer model is used to evaluate the relative performance of fail-safe active and passive suspensions. Both full state feedback and limited state feedback are used in the design of the active suspension. Even when hard to measure road profile signals are eliminated from the feedback scheme, the performance of the active suspension is negligibly affected and remains superior to passive suspension performance. The design of an active suspension is partially governed by subjective choice of the scaling factors in the performance index. The desired vehicle performance can be achieved by tuning these scaling factors and consequently evaluating the suspension feedback gains.
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Citation
Queslati, F. and Sankar, S., "Performance of a Fail-Safe Active Suspension with Limited State Feedback for Improved Ride Quality and Reduced Pavement Loading in Heavy Vehicles," SAE Technical Paper 922474, 1992, https://doi.org/10.4271/922474.Also In
References
- Karnopp D. C. “ Are Active Suspensions Really Necessary? ” ASME Paper presented at the Winter Annual Meeting San Francisco, Calif. December 10-15 1978
- Goodall R.M. Kortum W. “ Active Control in Ground Transportation - A Review of the State of the Art and Future Potential ,” Vehicle System Dynamics 12 1983 225 227
- Stephens, David G. “ Comparative Vibration Environment of Transportation Vehicles ” Passenger Vibration in Transportation Vehicles 24 1979 59 72
- Ellis J. R. “ The Ride and Handling of Semitrailer Articulated Vehicle ” Automobile Engineering 26 1966 141 161
- Walter W. D. Gossard D. Fensel P. “ Truck Ride: A Mathematical and Empirical Study ” SAE paper No. 690099 January 13-17 1969
- Allan A. B. ElMadany M. M. Dokainish M. A. “ Articulated Vehicle Models ” SAE Paper No. 801420 1980
- ElMadany M. M. “ Stochastic Optimal Control of Highway Tractors with Active Suspensions ” Vehicle System Dynamics 17 1988 193 210
- ElMadany M. M. Samaha M. E. “ Optimum Response of a Stochastic Model of a Tractor Semitrailer Vehicle-Part II: Ride Control of an Actively Suspended vehicle ” ASME Vibration Conference, Proceedings on Vehicle Dynamics and Special Topics Montreal Sep. 17-21 1989 177 184
- Ervin, R. D. Guy, Y. “ The influence of Weights and Dimensions on the Stability and Control of Heavy-Duty Trucks in Canada ” UMTRI Report No. 86-35 July 1986
- Dodds C. J. “ The Laboratory Simulation of Vehicle Service Stress ,” Journal of Engineering for Industry, ASME Transactions May 1974 96 2 391 398
- Dodds, C. J. Robson, J. D. “ The Description of Road Surface Roughness ,” Journal of Sound and Vibration 1973 31 2 175 184
- Robson J. D. “ Road Surface Description and Vehicle Response ,” International Journal of Vehicle Design 1979 1 1 25 35
- Bendat J. S. Piersol A. G. “Random Data: Analysis and Measurement Procedures,” Whiley-Interscience 1971 Toronto, Ontario, Canada
- Patel Rajnikant V. Munro Neil “Multivariable System Theory and Design,” International Series on Systems and Control 4 1st Oxford, Eng. New York Pergamon Press 1982
- Levine William S. “ On the Determination of the Optimal Constant Output Feedback Gains for Linear Multivariable Systems ,” IEEE Transactions on Automatic Control February 1970 43 48
- Hoskins W. D. Meek D. S. Walton D. J. “ The Numerical Solution of A T Q+QA=-C ,” IEEE Transactions of Automatic Control AC-22 5 October 1977 882 883