TRANSDUCER TESTING SYSTEM FOR LOW FREQUENCY VIBRATIONS

摘要

A transducer testing system for low frequency vibrations incorporates an electric motor/gearbox assembly (16) with an output shaft (18) and mechanical means for converting low frequency shaft rotation of the output shaft (18) to uniform low frequency sinusoidal excitation of an accelerometer (10). Simultaneously, a data processing unit (14) measures the response of the accelerometer (10) to the uniform low frequency excitation within predetermined frequency ranges. The data processing unit (14) then compares the measured response with predetermined accelerometer response limits to ascertain whether the accelerometer (10) is functional. The transducer testing system overcomes the limitations of electrodynamic testers to provide a means for accurately testing the low frequency response of the accelerometer (10).