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本文分析了电阻应变式称重传感器应用中存在的供桥电压损耗问题及其对测量结果的影响,并就解决这一问题提出了供桥电压四线制补偿原理,具体阐述了采用这一原理的两种补偿方法:即供桥电压直接补偿法和比率补偿法,并对这两种补偿方法的具体电路进了分析和比较。
In this paper, the problems of bridge voltage loss and its influence on the measurement results existing in the application of resistive strain gauge load cell are analyzed, and the principle of four-wire bridge voltage compensation is proposed to solve this problem. The principle of using this principle Of the two compensation methods: the bridge voltage direct compensation method and rate compensation method, and the two compensation methods for the specific circuit into the analysis and comparison.