I am designing a 2nd order IIR digital filter :
My tf equation with coefficients is
b = [0 1.209e09] a= [9.2175 -2.6952 1.0000] sys=tf(b,a,0.1,'Variable','z^-1') bode(sys)
I have couple of questions :
- How to get unity scaling .. as a formula... so that i can always multiply it with the 'sys' tf.
- I usually seen that coefficients are less than 1 , is there a way i can make them so ?
- My coefficients are calculated from some adaptive filter optimization algorithm, so they keep on changing, is there a way i can reduce the filter to filter coefficients changes to a a minimum.?