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Proceedings Paper

GPS synchronization of a motion simulator for hardware-in-the-loop applications
Author(s): Jay D. Marchetti
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Paper Abstract

A typical hardware-in-the-loop (HWIL) lab normally integrates a wide array of digital equipment, each driven by its own internal oscillator. While the various equipment designers may strive to utilize high-precision oscillators in their products, if no synchronization scheme is employed, then time-base drift between the various HWIL components is inevitable. If real-time communications between components is required, such as between the motion simulator controller and the simulation (host) computer, this time-base drift, exacerbated by timing jitter in the communication channel and each component's internal processing loop, can degrade the simulation fidelity. By designing the motion simulator controller to synchronize to an externally provided, facility-wide, standards-based site timing reference such as the Global Positioning System (GPS), the relative time-base drift can be completely eliminated. This paper discusses the advantages of this approach for improving HWIL simulation performance.

Paper Details

Date Published: 13 May 2011
PDF: 10 pages
Proc. SPIE 8015, Technologies for Synthetic Environments: Hardware-in-the-Loop XVI, 80150M (13 May 2011); doi: 10.1117/12.883517
Show Author Affiliations
Jay D. Marchetti, Ideal Aerosmith, Inc. (United States)

Published in SPIE Proceedings Vol. 8015:
Technologies for Synthetic Environments: Hardware-in-the-Loop XVI
Scott B. Mobley, Editor(s)

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