文章摘要信息 关键词 : 锁相放大电路 CD4046 AD630 [gap=857]Keywords : phase lock-in amplifier;CD4046;AD630
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By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.
如果使用双相位锁相放大器测量交变的被测量,误差将减小到全量程的0.4%以内。
Used lock-in amplifier SR844 for hardware phase detection and compared with software detection.
利用锁相放大器SR844对产生的信号进行模拟鉴相,并同软件鉴相结果比较分析;
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