This paper presents a novel method for identifying in real-time the sprung mass of a 2-DOF quarter-car suspension model. It does so by uniquely combining the base-excitation concept with polynomial chaos estimation. This unique combination of the two methods provides two important benefits. First, the base-excitation concept makes it possible to estimate the sprung mass without explicitly measuring or knowing the terrain profile prior to estimation. Second, the polynomial chaos estimation strategy makes it possible to perform such mass estimation using sprung and unsprung acceleration measurements without pseudo-integration filters that can be difficult to tune. This paper derives the proposed method in detail and presents computer simulations to evaluate its convergence speed and accuracy. The simulation results consistently converge to within 10% of the true mass value typically within 120 seconds.
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ASME 2009 Dynamic Systems and Control Conference
October 12–14, 2009
Hollywood, California, USA
Conference Sponsors:
- Dynamic Systems and Control Division
ISBN:
978-0-7918-4892-0
PROCEEDINGS PAPER
A Base-Excitation Approach to Polynomial Chaos-Based Estimation of Sprung Mass for Off-Road Vehicles
Benjamin L. Pence,
Benjamin L. Pence
The University of Michigan, Ann Arbor, MI
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Hosam K. Fathy,
Hosam K. Fathy
The University of Michigan, Ann Arbor, MI
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Jeffrey L. Stein
Jeffrey L. Stein
The University of Michigan, Ann Arbor, MI
Search for other works by this author on:
Benjamin L. Pence
The University of Michigan, Ann Arbor, MI
Hosam K. Fathy
The University of Michigan, Ann Arbor, MI
Jeffrey L. Stein
The University of Michigan, Ann Arbor, MI
Paper No:
DSCC2009-2641, pp. 857-864; 8 pages
Published Online:
September 16, 2010
Citation
Pence, BL, Fathy, HK, & Stein, JL. "A Base-Excitation Approach to Polynomial Chaos-Based Estimation of Sprung Mass for Off-Road Vehicles." Proceedings of the ASME 2009 Dynamic Systems and Control Conference. ASME 2009 Dynamic Systems and Control Conference, Volume 1. Hollywood, California, USA. October 12–14, 2009. pp. 857-864. ASME. https://doi.org/10.1115/DSCC2009-2641
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