[PD] msd change mass of mass

[Andy Farnell]

You're a hero Chuck. This tallys well with the equations in Perrys book.
What I was missing is the step where you get the transfer function.


I made (attached) a little test rig. What isn't looking right is the underdamped
behaviour. I was expecting to see a decaying oscillation around the top
point. Maybe my test has errors.

a.
 



On Sat, 15 Mar 2008 19:16:29 -0500
"Charles Henry" <czhenry at gmail.com> wrote:

> >  Note, when c goes to 0, we get a harmonic oscillator at angular
> >  frequency w=k/m rad/sec, which is correct.  When we increase the
> >  damping, we get terms of e^(-0.5*c/m*t) which damps the solution.
> 
> made a typo here:
> 
> angular frequency w=sqrt(k/m) rad/sec
> and f=sqrt(k/m)/2pi Hz
> 
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-- 
Use the source
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