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Indexed by:Journal Papers

Date of Publication:2009-06-15

Journal:Instrument Technique and Sensor

Included Journals:PKU、ISTIC、CSCD

Issue:6

Page Number:4-7

ISSN No.:1002-1841

Key Words:magneto-elastic;force transducer;repeatability;experiment

Abstract:To study the repeatability of the Fe-Ni alloy magneto-elastic force transducer and compare the repeatability changes of the sensor under different frequency conditions, this paper presented some experimental analysis and researches on the repeatability characteristic of the designed Fe-Ni alloy magneto-elastic force transducer under the conditions of different pre-load, different load scope and different magnetizing frequency. It utilized standard error to indicate the repeatability of the sensor, chose pressing machine equipped with ring dynamometer to load the sensor and applied the alternating current bridge to read the magnetizing inductance of the sensor. It was found that an increase in pre-load with a certain maximum load would decrease the repeatability error of the sensor. When the pre-load increased to a certain degree, continuing to increase pre-load could not reduce the repeatability error of the sensor, which remained unchanged on the whole. The increase in the maximum load would increase the repeatability error of the sensor.