In this paper, three methods to measure the efficiency of inverter have been discussed and compared. Based on the conclusion, analog multiplication method is employed.

文中分析、比较了测量逆变器效率的三种方法后，提出采用模拟相乘方法作为硬件处理方案。

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The multiplication of correlation could be implemented just by pseudo random gating sampling (analog) or data reservation control and rejection (digital).

相关处理乘法可简单地用伪随机门控采样(模拟)或伪随机控制数据保留与剔除(数字)方法实现。

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And in the third chapter, the principle and the characteristic of analog-digital multiplication OCF are described in detail.

并在第三章中重点讲述了模拟混合最优滤波技术的原理和特点。

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