The quantizing error , linear error and differential linear error of an a / d converter were deduced , after that the error model of synchronous sampling , asynchronous sampling and quasi - synchronous sampling algorithms used in power measurement were build in condition that a / d was not perfect 推導了a / d量化誤差、非線性及微分非線性誤差的數學模型。然后,建立了采樣功率測量同步采樣算法、非同步采樣算法和準同步采樣算法在非理想情況下的計算機仿真模型。
Abstract : the paper proposes a mathematical model of a / d converter with quantizing error , nonlinearity and differential nonlinearity errors for computer simulation , and based on the model , the errors caused by voltage change , current change and phase change in the power measurement are analyzed by computer simulation for both the asynchronous and quasi - synchronous sampling algorithms 文摘:本文提出了具有量化誤差、非線性誤差和微分非線性誤差的a / d轉換器的數學模型,在該數學模型的基礎上,仿真分析了非同步采樣法、準同步采樣遞推算法各種情況下的誤差,包括功率測量中電壓線性、電流線性、相位變化誤差及電壓測量的誤差。