A Smart 6-dof Load Cell Development
نویسنده
چکیده
A smart 6-DOF load cell is developed which uses an array of ICP® strain gages with piezo-electric sensing elements. Since the strain gage transducers have multiple-pin connectors, Transducer Electronic Data Sheets (TEDS) can be used to identify each sensing element, thereby simplifying the cabling and eliminating channel identification errors. The TEDS of each strain gage also stores a single weighting value and a 6-element calibration factor. The weighting value is either 0 or 1, indicating the operational status of the sensor. The 6-element calibration factor converts the output of the sensor to its contribution to the 6-DOF force estimate. The result is a faulttolerant smart 6-DOF load cell. The load cell has been developed primarily for measuring 6-DOF impedance functions. Two case histories are presented to verify the load cell. The first is estimating rigid body inertia properties of a laboratory test structure. The second is the development of an impedance model of a standard laboratory test structure.
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