A Microprocessor Controlled Strain Gauge Calibration Module

Le résumé fourni par la source

Abstract : The traditional method of calibrating multi-component wind tunnel st rain gauge force balances involved the application of forces, singly and in combinations, using weights and appropriate mechanisms. Normally the balance and loads had to be re-aligned for each load increment. This method involved arduous physical work and was very time consuming. A new method has been developed at ARL which involves comparing the balance to be calibrated to a precision master balance. The balance to be calibrated and the master balance are so arranged that their calibration axes are coincident and no re-alignment is required during the calibration process. Loads are applied by pneumatic cylinders which will ultimately be computer controlled. This avoids the extensive weight handling previously required. It is expected that the new calibration system will reduce the time required for a complete second order calibration of a six-component from weeks to hours. Keyword: Australia.

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