TY - JOUR
T1 - Statistical transparency analysis in internet-distributed hardware-in-the-loop simulation
AU - Ersal, Tulga
AU - Brudnak, Mark
AU - Stein, Jeffrey L.
AU - Fathy, Hosam K.
N1 - Funding Information:
Manuscript received July 30, 2010; accepted October 8, 2010. Date of publication December 30, 2010; date of current version January 20, 2012. Recommended by Technical Editor V. N. Krovi. This work was supported by a grant from the Independent Lab In-House Research (ILIR) program at the Tank Automotive Research Development and Engineering Center (TARDEC).
PY - 2012/4
Y1 - 2012/4
N2 - Internet-distributed hardware-in-the-loop simulation (ID-HILS) is emerging as a critical enabler for geographically dispersed concurrent systems engineering. This paper is concerned with transparency in ID-HILS, which is a measure of fidelity with respect to the nondistributed alternative of integration. Specifically, recognizing the need for a transparency analysis method for stochastic and nonlinear ID-HILS systems in general, the paper first proposes a statistical transparency analysis method. Next, this method is applied to a novel ID-HILS system. This application helps draw two important general conclusions: 1) Distributing the simulation can in and of itself be an important source of transparency degradation and can even dominate the adverse effects of the Internets delay, jitter, and loss when delay is relatively small; and 2) transparency is not an independent property of the system, but is a system property that needs to be defined with respect to an output, as different output signals in the same system can experience different levels of transparency. These conclusions are important for guiding future efforts to improve transparency in a given ID-HILS system, and the proposed method enables such transparency analysis in other stochastic nonlinear ID-HILS systems, as well.
AB - Internet-distributed hardware-in-the-loop simulation (ID-HILS) is emerging as a critical enabler for geographically dispersed concurrent systems engineering. This paper is concerned with transparency in ID-HILS, which is a measure of fidelity with respect to the nondistributed alternative of integration. Specifically, recognizing the need for a transparency analysis method for stochastic and nonlinear ID-HILS systems in general, the paper first proposes a statistical transparency analysis method. Next, this method is applied to a novel ID-HILS system. This application helps draw two important general conclusions: 1) Distributing the simulation can in and of itself be an important source of transparency degradation and can even dominate the adverse effects of the Internets delay, jitter, and loss when delay is relatively small; and 2) transparency is not an independent property of the system, but is a system property that needs to be defined with respect to an output, as different output signals in the same system can experience different levels of transparency. These conclusions are important for guiding future efforts to improve transparency in a given ID-HILS system, and the proposed method enables such transparency analysis in other stochastic nonlinear ID-HILS systems, as well.
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U2 - 10.1109/TMECH.2010.2095024
DO - 10.1109/TMECH.2010.2095024
M3 - Article
AN - SCOPUS:84856345420
VL - 17
SP - 228
EP - 238
JO - IEEE/ASME Transactions on Mechatronics
JF - IEEE/ASME Transactions on Mechatronics
SN - 1083-4435
IS - 2
M1 - 5678651
ER -