Quality Confirmation of Electrical Measurement Data for Space Parts Based on MSA Method

Abstract

The accuracy and precision of data is the most important property of electrical measurement data in the assurance of aerospace parts. Based on the basic principle of measurement system analysis, we focus on the variance method to analyze the repeatability and the reproducibility of electrical measurement data. By studying the error of the measurement system to produce, we calculate the proportion of various error sources affect the measurement result, the interaction, synthetically determination of the measurement system status and measuring data quality, and adopt effective measures to reduce or eliminate the error. With the crystal oscillator measurement system using general instrument, we carried on the practice and its help us to realize the problem of data quality. By specifying the measurement interval clearly, the specific gravity calculation results of repeatability and reproducibility are reduced from more than 70% to less than 10% of the total variation.