You can use the ContinuousClock to produce arbitrary, piecewise-constant
waveforms, periodic or not...
Edward
At 10:05 AM 12/1/2005 +0100, Francesc Moll Echeto wrote:
Dear Ptolemy users,
I recently installed Ptolemy. I am interested in the simulation of
electromechanical systems.
I started by modelling the equations of a damped mechanical oscillator
subject to an external force, which I modelled using a CurrentTime actor
and an Expression actor, in my case an exponential impulse. This example
works great.
Now, I would like to substitute the exponential impulse by a more complex,
arbitrary, waveform of the external force. My idea is to use a piece-wise
linear waveform that I could modify to resemble a realistic mechanical impulse.
Could someone give me an idea on how to do that? Is that possible with
Ptolemy? I don't know if I should use a DE director (defining a sequence
of values) inside the CT director that I use to solve the equations.
Honetly, I am lost and don't know how to do it.
Any hint will be very much appreciated.
Francesc
--
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o o o Francesc Moll Echeto | High Performance IC Design Group
o o o Dpt. Electronic Engineering | www: http://pmos.upc.es/blues
o o o Univ. Politecnica de Catalunya | email: [EMAIL PROTECTED]
U P C c/ Gran Capita s/n Ed. C4 | Tel: +34 934016846
08034 Barcelona, Spain | Fax: +34 934016756
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Edward A. Lee
Professor, Chair of the EE Division, Associate Chair of EECS
231 Cory Hall, UC Berkeley, Berkeley, CA 94720
phone: 510-642-0253 or 510-642-0455, fax: 510-642-2845
[EMAIL PROTECTED], http://ptolemy.eecs.berkeley.edu/~eal
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