提出了一種新穎的基于雙恒流源法六端比例測量原理的應(yīng)變測量技術(shù)，介紹了其測量原理及誤差分析和校準(zhǔn)技術(shù)，實(shí)現(xiàn)了高精度應(yīng)變測量。給出了利用該測量原理設(shè)計(jì)的多通道應(yīng)變儀測試結(jié)果。實(shí)驗(yàn)室測試及在某大型離心載荷試驗(yàn)中運(yùn)行表明，該應(yīng)變儀具有較高的測量精度、穩(wěn)定性、抗干擾性和可靠性，其設(shè)計(jì)原理和方法對于工程設(shè)計(jì)與應(yīng)用具有一定的參考價(jià)值。

In this paper, a novel high-accuracy strain measuring technology based on the method of dual invariable-current, six end connecting and proportional measurement is proposed. The measurement principles, measurement errors analysis and self-calibration technology are described in detail. Lab test data by self-designed multi-channel strain measuring instrument based on the principles and technology is illustrated. The lab test and practical centrifugal load experimentation indicate that the measurement principles and technology are right, and the accuracy, stability, anti-interference and reliability are excellent. The principles and technology for stain measurement are worthwhile in practical engineering applications.