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/* * ADC.h */ // initialize the ADC for single conversion, select Analog input pins void initADC( int amask); int readADC( int ch);

%先对模拟滤波器进行预畸，可以消除偏差的影响 N=2;%number of poles T=0.2;%sampling time wc=2;%analog cutoff frequency Wc=wc*T/pi;%标准化后的数字滤波器的截止频率 [numd,dend]=butter(N,Wc);%直接用

%先对模拟滤波器进行预畸(prewarping)，可以消除偏差的影响 N=2;%number of poles T=0.2;%sampling time wc=2;%analog cutoff frequency Wc=wc*T/pi;%标准化后的数字滤波器的截止频率 [numd,dend]=butter(N,Wc);%直接用butter函数

%先对模拟滤波器进行预畸，可以消除偏差的影响 N=2;%number of poles T=0.2;%sampling time wc=2;%analog cutoff frequency Wc=wc*T/pi;%标准化后的数字滤波器的截止频率 [numd,dend]=butter(N,Wc);%直接用butter函数

% Example 10.13 %？？？？？？？？？？？？？？？？？？？？？？？？？？？？？？没看明白 %page_430 直流电机的数字控制 %对于数字控制，可以用hybrid方针设备的响应 wn = sqrt(2); T = 2*pi/wn/20 Np = 10; % plant Dp = [1 .1 0]; clf for i = 1:4; T = input(

% Digital Filter Specifications: wp=0.2*pi; % digital Passband freq in rad ws=0.3*pi; % digital Stopband freq in rad Rp=1; %

% Digital Filter Specifications: wp=0.2*pi; % digital Passband freq in rad ws=0.3*pi; % digital Stopband freq in rad Rp=1; % Passband ripple in dB As=15; % Stopban

% Digital Filter Specifications: wp=0.2*pi; % digital Passband freq in rad ws=0.3*pi; % digital Stopband freq in rad Rp=1; % P

% Digital Filter Specifications: wp=0.2*pi; % digital Passband freq in rad ws=0.3*pi; % digital Stopband freq in rad Rp=1; % Passband ripple in dB As=1

% PWSK_DSP TOOLBOX % Matlab functions to accompany the companian book % Digital Signal Processing using Matlab % by Proakis and Ingle % Publisher: PWS-Kent %