由于变换器工作在平均电流控制的APFC系统中，本文建立了BUCBB变换器的大信号动态模型，并将BUCBB变换器中的开关元件用受控源代替。
On account of the average current control chosen in the APFC system, a large signal dynamic BUCBB model is built and all the switching elements replaced by dependent sources.
提出了对传感器采集到的微弱信号进行累加平均和小波变换中的多分辨率分析方法相结合去噪。
The method that combine the cumulative average and multi-resolution analysis in wavelet transform was presented which can de-noise the weak signal collected from the sensor.
采用半导体存储器延迟信号，短时间平均器与长时间平均器对输入信号积分。
A semiconductor memory is used as a delay unit. Short-term averager and long-term averager integrate the input signals.
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