Force Acquisition System for Digital Impact Tester
A force acquisition system for digital impact tester was investigated,in which structural design of barshaped elastic element,circuit design as well as static analysis were involved.Based on analysis of international requirements on the detection precision of digital impact tester,information concerning the precision of sensor parameters,sensors and adhesive was collected,and adhesion sites were settled through finite element analysis and optimization.Circuit design involved zero setting,temperature compensation,amplifying circuit,filter circuit and circuits to connect host computer.Loading calibration test was performed on sensors under static working condition. According to partial authoritative examination,the linearity was 0.06%,the repetitiveness was 0.01%,the retardation was 0.08%,and the sensitivity was 1.112mV IV. According to the examination conducted in some metrology institute,the total work error of impact in a digital impact tester adopting the above force acquisition system was 2% of the impact value of a standard specimen,which has already reached the precision level and met the design requirement.
digital impact tester force acquisition system amplifying circuit force sensor.
Yongling Fu Guohui Han Gangjun Li
School of Automation Science and Electrical Engineering,Beihang University,Beijing,100191 China Department of Mechanical & lectronic Engineering .Chengdu Electromechanical College,Chengdu,610031 C
国际会议
2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)
北京
英文
322-326
2009-08-16（万方平台首次上网日期，不代表论文的发表时间）