Howtosignalprocessing
- How do you write a transfer function in Bode form?
- Can we get the transfer function from the magnitude plot?
- How do you find the value of K in Bode plot?
How do you write a transfer function in Bode form?
Bode Form of Transfer Function
Bode form of KG(s) is a factored form with the constant term in each factor equal to 1, i.e., lump all DC gains into one number in the front. 3K(s3+1)4s((s2)2+s2+1)|s=jω=3K4⏟=K0jω3+1jω((jω2)2+jω2+1).
Can we get the transfer function from the magnitude plot?
Calculating a Transfer Function from a Bode Plot
A Bode plot simply shows the magnitude and phase of a transfer function, so the two are directly related. The magnitude of the transfer function is shown on a logarithmic scale and the phase is shown in radians or degrees.
How do you find the value of K in Bode plot?
K = 1.00 so the value of KdB = 20·log10(|K|) = 20·log10(|1.00|) = 0.00. Or, given that KdB = 0.00, |K| = 10Kdb/20 = 100.00/20 = 1. The sign of K depends on phase, in this case K is positive. and phase = 0°.
