本文对模拟电子技术课程中有关“反馈”的判别方法，诸如正、负反馈，电压、电流反馈以及串联、并联反馈等做了详细的分析比较。

The determinant method of feedback, such as positive feedback and negative feedback, voltage feedback and current feedback, series feedback and parallel feedback, etc.

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本文以并联电流型有源滤波器的数学模型为基础，讨论了有源滤波器的控制方法。该方法由负载电流前馈、电源电流状态反馈和控制延迟补偿组成。

In this paper, the control method of the current-source active filter is discussed, which is made up of the state-feedback and delay compensation control.

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从逆变器等效输出阻抗的角度，对基于输出电压和滤波电感电流双闭环瞬时反馈控制技术的逆变器并联系统的环流特性进行了研究。

Output characteristic is one of the most important characteristics of voltage source inverter, which is determined by the equivalent output impedance of the inverter.

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