Weighing scales – Self-positioning – Repositioning in response to deflection under load
Patent
1996-09-04
1998-12-15
Gibson, Randy W.
Weighing scales
Self-positioning
Repositioning in response to deflection under load
177185, G01G 2310, G01G 138
Patent
active
058500570
ABSTRACT:
A weighing apparatus capable of actively weighing a load in a rapid and accurate manner is presented. The weighing device includes an electromechanical linear actuator coupled to a load cell, wherein the output of the load cell is received by a feedback controller that generates an input signal received by the electromechanical linear actuator. A processor receives both the output signal and a measured value of the input signal and derives therefrom a weight for the load coupled to the weighing device. By employing the load cell output for feedback, the need for a position sensor is eliminated. The response time of the apparatus is enhanced by the electromechanical linear actuator which functions to quickly bring the load being weighed to a mechanical equilibrium position. Weight values may also be obtained by forcing one of the input or output signals to zero and then measuring the other of the signals.
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Gibson Randy W.
The University of Akron
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