Play With MATLAB: November 2012

Some Great Thoughts

"Go ahead and do your best" | "It is the simple things in life that build brilliance in creativity..simplicity cannot be taught, it is inborn..do not tamper with it" | "All men dream but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity; but the dreamers of the day are dangerous men, for they may act their dream with open eyes to make it possible" | "इच्छा हमेशा योग्यता को हरा देती है" | "If you think you can do a thing or think you can't do a thing, you're right. -Henry Ford" | "Failure is success if we learn from it. -Malcolm S. Forbes" | "The future belongs to those who believe in the beauty of their dreams. -Eleanor Roosevelt" | "The great men and women of history are remembered, not because they never made mistakes or never failed, but because they didn't let their failures stop them. They kept on until they succeeded" | "असफलता हमें सिखाती है कि सफलता का प्रयत्न पूरे मन से नहीं किया गया"

Sunday, November 25, 2012

Frequency Response Analysis for a Transfer Function

to analysis the frequency response of any transfer function we use FREQS (for analog system or for S-domain) & FREQZ (for digital system or for Z-domain).

Program (for S-domain):

clear
clc
num=input('enter the coefficient of numerator: ');
den=input('enter the coefficient of denominator: ');
freqs(num,den)

Output:

enter the coefficient of numerator: 1
enter the coefficient of denominator: [1 2 8]

Program (for Z-domain):

clear
clc
num=input('enter the coefficient of numerator: ');
den=input('enter the coefficient of denominator: ');
freqz(num,den)

Output:

enter the coefficient of numerator: [1 1 2]
enter the coefficient of denominator: [2 1 3]