The method measuring electrical parameters is based on ac sample technology, the FFT way is used in software design, so the design of circuit, the function and the accuracy is fully improved.
三相电测量采用交流采样技术，软件算法采用快速傅里叶变换fft，全面克服了以前的三相电参数测量方法普遍存在的实现电路复杂以及在功能和精度上的不足。
Ac sampling measurement unit has better accuracy and stability as the online measuring instrument of the electrical parameters of power network.
交流采样测量装置作为电网电测量参数的在线测量仪器，具有较好的准确度和稳定性。
AC electrical dynamometer is an important device for engine test with easy-controlled testing conditions, easy-collected and managed parameters as well as high measuring precision.
目前，交流电力测功机是进行发动机性能试验的重要装置，其优点在于试验条件容易控制，参数便于采集处理，测量精度较高。
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