根据需要电路电流过流保护的特点，重点介绍了滤波电感电流反馈做内环，输出电压做外环的双环控制策略。

Because the circuit needs current overload protect, a double loop strategy , with current feedback of filter inductance as inner loop and output voltage as outer loop, is studied.

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其中内部动态元分别由带有局部激活反馈和局部输出反馈的自回归滑动平均滤波器构成。

The internal dynamic elements are auto-regressive moving average filters with local activation feedback and local output feedback, respectively.

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反馈计算部分(240)将量化误差进行滤波，并且将滤波结果输出到加法器(250)。

The feedback computing section (240) filters the quantization error and outputs the result of the filtering to the adder (250).

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