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논문 기본 정보

자료유형
학술대회자료
저자정보
Semiha Türkay (Anadolu University) Hüseyin Akçay (Anadolu University)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS 2015
발행연도
2015.10
수록면
1,618 - 1,623 (6page)

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초록· 키워드

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In this paper, spectral models of road profiles using nonparametric and subspace identification methods are developed from road elevation measurements. First, power spectra of road profiles are estimated on uniform grids of frequencies by averaging and windowing from road measurements. These results are illustrated on the data sets obtained from the University of Michigan Transportation Research Institute archives by computing Welch spectrum estimates for left and right vehicle tracks. Then, curve fitting by the single and two-slope approximations are applied on the Welch estimates. Rational approximations, by considering a recent subspace algorithm, the regularized nuclear norm and the regularized and reweighted nuclear norm heuristics are performed for a further shaping of power spectrum estimates. Preliminary results show that the regularized and reweighted nuclear norm heuristic algorithm yields best fits to the data by low order rational spectra without distorting too much the homogeneous road assumption. Finally, for comparision of the roughness evaluation the IRI roughness index is calculated for different algorithms assuming that road excitations are zero-mean Gaussian processes.

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Abstract
1. INTRODUCTION
2. DESCRIPTION OF THE ROAD ROUGHNESS
3. ROAD PROFILE MODELLING BY SUBSPACE IDENTIFICATION METHODS
4. INDIRECT STATISTICS OF ROAD ROUGHNESS
5. CONCLUSIONS
REFERENCES

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UCI(KEPA) : I410-ECN-0101-2016-569-001919614