Homework Help: Creating a Bode plot by analyzing a transfer function

1. Oct 16, 2011

andrew.tkelly

1. The problem statement, all variables and given/known data

I am constructing a Bode plot from a given transfer function. I having trouble because I am unsure how to rewrite the transfer function in the proper form. What makes this transfer function particularly tricky for me, is that there is no "jω" in the numerator, just ω^2. In all the examples I've seen solved, they always use s = jω, and put the function in the proper form.

2. Relevant equations

H(jω) = (10ω^2) / [(jω + 10)(jω - 200)]

3. The attempt at a solution

Well, I know how to reduce the denominator values to their proper form, but not the numerator value...because there is no "j"... and no evidence of a j^2 because there is no negative sign in front.

2. Oct 16, 2011

Staff: Mentor

Suppose the transfer function was negative before the "jω" was squared...

3. Oct 17, 2011

Redbelly98

Staff Emeritus
Moderator's note: thread moved to Engineering, Comp Sci, & Technology.

In the future, please post engineering homework problems in this forum.

4. Oct 17, 2011

Spinnor

See example 3 of link below,

http://www1.mengr.tamu.edu/aparlos/MEEN651/E17.pdf [Broken]

the problem looks similar to yours.

Found via Google search "Bode plot from a given transfer function examples"

Good luck

Last edited by a moderator: May 5, 2017