试验机压力信号调理中的误差分析估算及修正

Estimation and Correction of Errors in Pressure Signal Conditioning of Test Machines

对300 kN抗压强度试验压力信号调理过程中的桥源误差和仪表放大器的RTI和RTO误差进行了分析,并对最坏情况下的总误差进行了估算,在此基础上讨论了修正误差的对策.

An analysis is carried out on the bridge power error in the process of pressure signal conditioning of 300 kN compression strength test and RTI and RTO errors of the instrument amplifier. And an estimation is given of the total errors under the worst circumstances. On this basis discussion is made on the countermeasures for correcting errors.