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Electromechanical Active Suspension Demonstration for Off-Road Vehicles
Technical Paper
2000-01-0102
ISSN: 0148-7191, e-ISSN: 2688-3627
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Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
The University of Texas Center for Electromechanics (UT-CEM) has been developing active suspension technology for off-road and on-road vehicles since 1993. The UT-CEM approach employs fully controlled electromechanical (EM) actuators to control vehicle dynamics and passive springs to efficiently support vehicle static weight. The program has completed three phases (full scale proof-of-principle demonstration on a quarter-car test rig; algorithm development on a four-corner test rig; and advanced EM linear actuator development) and is engaged in a full vehicle demonstration phase. Two full vehicle demonstrations are in progress: an off-road demonstration on a high mobility multiwheeled vehicle (HMMWV) and an on-road demonstration on a transit bus. HMMWV test results are indicating significant reductions in vehicle sprung mass accelerations with simultaneous increases in cross-country speed when compared to conventional passive suspension systems.
Additionally, original projections of low power requirements for suspension actuators are being confirmed. The 3,400 kg (3.75 ton) vehicle being tested utilizes a 5 kW alternator to provide suspension power. Power conditioning circuits limit the continuous deliverable power to 4 kW, which corresponds to 1.2 kW/metric ton (1.4 hp/ton).
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Citation
Weeks, D., Beno, J., Guenin, A., and Bresie, D., "Electromechanical Active Suspension Demonstration for Off-Road Vehicles," SAE Technical Paper 2000-01-0102, 2000, https://doi.org/10.4271/2000-01-0102.Also In
References
- Beno J. H. Bresie D. A. Guenin A. M. Weeks D. A. “Control System for Single Wheel Station Heavy Tracked Vehicle Active Electromagnetic Suspension,” SAE International Congress and Exposition Detroit, Michigan February 24-27 1997
- Beno J. H. Bresie D. A. Guenin A. M. Weeks D. A. “Laboratory Testing of Active Electromechanical Near Constant Force Suspension (NCFS) Concept on Subscale Four Corner, Full Vehicle Test-Rig,” SAE International Congress and Exposition Detroit, Michigan February 24-27 1997
- Beno J. H. Bresie D. A. Guenin A. M. Weeks D. A. “The Design of an Electromagnetic Linear Actuator for an Active Suspension,” SAE International Congress and Exposition Detroit, Michigan March 1-4 1999