温度常数测量配置中的静态误差是由直流放大器偏置电压引起的

Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412) Pub Date : 2003-05-20 DOI:10.1109/IMTC.2003.1208021

R. Freire, F. Santos, R.N.C. Alves, A. T. Barros, B. Luciano

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引用次数: 1

摘要

直流放大器偏置电压在基于恒温配置的加热传感器的测量中引入了动态和静态误差。以辐射计为例，显示了基于模拟电压控制和脉宽调制的反馈配置的静态误差随偏置电压的变化。这些误差随偏置电压的增加而增加，在PWM配置中相似，随脉冲幅度的增加而减小。

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Static error in the temperature constant measurement configurations due to DC amplifier offset voltage

The DC amplifier offset voltage introduces dynamic and static errors in measurements based on heated sensors at constant temperature configuration. It is shown, in the case of a radiometer, the variation of static errors in function of offset voltage for configurations of feedback based on analogic voltage control and on pulse width modulation - PWM. These errors increase with offset voltage and are similar in PWM configuration, decreasing with pulse amplitude.

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Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412)

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