3752. A Portable Device for Measuring the Cog: Design, Error Analysis and Calibration

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Title3752. A Portable Device for Measuring the Cog: Design, Error Analysis and Calibration
Publication TypeConference Paper
Paper Number3752
Year of Publication2020
AuthorsPreviati, Giorgio, Ballo Federico, and Gobbi Massimiliano
Category Number3, 9
Conference2020 SAWE Tech Fair
Conference LocationVirtual Conference
PublisherSociety of Allied Weight Engineers, Inc.
Date Published07/2020

The paper is devoted to the design, error estimation and calibration of a portable device for the measurement of the centre of gravity of rigid bodies. The device consists in a simple but effective implementation of the knife edge method. The design of the device including safety considerations is fully described. An error estimation approach is employed in the very early stage of the design to assess the required instrumentation accuracy and the manufacturing tolerances. A calibration of the portable device is performed by means of proper calibrated masses. After calibration, the accuracy of the device corresponds to the target accuracy defined in the a-priori error analysis.

The design procedure described in the paper shows a straightforward approach for the design of devices for the measurement of the inertia properties. By such a procedure, it is possible to identify the most critical design areas and make the correct choices in the early stage of the design process. Also, a deep understanding of the measuring process can be gained allowing the definition of an effective calibration procedure.

Key Words03. Center Of Gravity, 09. Weighing Equipment
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