本文介绍了基于可控电流源的高精度高细分数步进电机细分驱动方法，采用 PwM(脉冲宽度调制)和5阶巴特沃斯低通滤波器实现了双14位精度较高的DAc，用 于控制精密可控电流源的电流输出，使得励磁线圈中流经的电流为稳定的直流，实现 了步进电机低噪声，高稳定度的细分驱动运行。 -This article describes the controlled current source based on the subdivision number of high precision ste

滤波器能够设计阶数，巴特沃兹，车比雪夫1,2型，椭圆，还有众多窗函数的FIR滤波器-Filter can order Butterworth car than Chebyshev type 1 and 2, oval, there are a number of window functions FIR filter

设计一个8阶以内的带通滤波器，通带截止频率fc1=30070HZ，fc2=32170HZ，通带内允许最大衰减0.2dB。设计满足要求的Butterworth滤波器和chebyshev滤波器。以RC运放为基本单元以最易实现的原则完成电路设计及参数选择，并根据设计参数进行幅频特性和相频特性的仿真，给出仿真曲线。分析电路的无源灵敏度。-Design within an 8-order band-pass filter, the passband cutoff frequencies FC1 = 300

这是关于巴特沃斯（Butterworth）高通对图像进行锐化处理，二阶巴特沃斯(Butterworth)低通滤波器进行图像平滑的matlab gui-This is about Butterworth (Butterworth) high-pass image sharpening, second order Butterworth (Butterworth) low-pass filter for image smoothing matlab gui