http://en.wikipedia.org/wiki/Van_der_Pol_oscillator

anyone done this in pd? anyone want to try?

i found this with google, but no luck in figuring out how to make a patch:

http://lists.puredata.info/pipermail/pd-list/2005-12/033779.html

Wow it seems interesting... not a clue about the math behind though...
I bet Katjav and Maelstorm understand it, let's pray them to illuminate us

Hello,

I am not sure if this helps but there is a Gendy external (Iannis Xenakis' Dynamic Stochastic Oscillator) which maybe is similar or hopefully some help at least.
https://github.com/ssfrr/gendyflext