WANG Zhi-juan, GUO Xiao-guang, SUN Ji-feng, TANG Jian-hua, YU Qian-yang. Adaptive correction of multi-range measuring errors of laser resistor trimming machine[J]. Editorial Office of Optics and Precision Engineering, 2004,(3): 259-264
WANG Zhi-juan, GUO Xiao-guang, SUN Ji-feng, TANG Jian-hua, YU Qian-yang. Adaptive correction of multi-range measuring errors of laser resistor trimming machine[J]. Editorial Office of Optics and Precision Engineering, 2004,(3): 259-264DOI:
An adaptive correction method based on the measuring theory of Wheatstone bridge is proposed to reduce the effect of the multi-range measuring errors of a laser resistor trimming machine on the resistance adjusting accuracy. The corrected values in series to be used for correction of multi-range measuring errors of laser resistor trimming machine are adaptively obtained by measuring and calibrating the measuring errors of high precision standard resistors
and they can be used to correct all the resistance measuring errors of resistors to be adjusted to further reduce the system measuring errors. It is proved in practice that if a measuring system has good stability and low fluctuation
the precision of measuring system could be ±0.5‰ in low resistance(R<100 Ω)zone; ±0.2‰ in middle resistance zone; ±2‰ in high resistance(R≥1 MΩ)zone.
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references
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