用于心电的一种低通数字滤波算法，该方法设计简单、运算量小，对有用信号的影响小。同时设计了相关的界面，用于实时显示心电信号的波形，且可以在不同背景下将心电信号显示出来。-Used for the ECG a low pass digital filtering algorithm, the method is designed to be simple, small amount of computation, the impact of the useful signal. While the

单相并网逆变器并网电流中含有大量谐波，传统的PI 控制器难以满足波形跟踪需要，此处采用比例+复的复合控制算法用于逆变器电流环控制器设计(The single-phase grid-connected inverter has a large amount of harmonics in the grid-connected current. The traditional PI controller can not meet the needs of waveform tracking. Her