The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Inactive » comp.soft-sys.math.mathematica

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: OutputResponse gives funny results
Replies: 1   Last Post: Oct 25, 2012 11:35 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 143
Registered: 8/22/05
OutputResponse gives funny results
Posted: Oct 22, 2012 2:07 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply


I am trying to implement some examples on Dorf's book. Here is a code for
one of them.

Tcl[p_,Kp_,Kd_,Ki_]=TransferFunctionModel[(Ki+Kp s+Kd s^2)/(Ki+Kp s+Kd
s^2+p^2 s^2+2 p s^3+s^4),s]


s->Automatic]},Style["Example 4.4 - Dorf - 12^th Edition - R(s) = 10/s, D(s)

Even though the poles are on the left side (stable system), OutResponse
gives huge numbers (instability) when the slider for the variable Ts is
moved to higher values. More than, it is seems that this simple code makes
Mathematica ever so slow.

Have I missed something?

Many thanks


Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.