module request: 2nd order Langevin process

[glocke01]

Hi,

love your modules!!

I've been wanting something like Ornstein-Uhlenbeck or Langevin dynamics for some time. My request is to add inertia to your Ornstein Uhlenbeck. I'm thinking of a module where you use Ornsetein Uhlenbeck equation as function of velocity instead of position. The "mean reversion strength" would then be drag. To prevent it from running away you could either make it wrap from +10 to -10 or add a potential well.

[mhampton]

Thanks for the suggestion, I'm glad someone is interested.

What you suggest would be easy to do, although it would require at least one more output and maybe another input to control the well depth. The Ornstein-Uhlenbeck is already kind of cramped at 4hp so maybe I can make a wider one with more options. I'll try to do that at some point soon although I am pretty busy with other stuff for the next couple of weeks.

[mhampton]

OK, I have added a new module that may do some of what you want (see the new README.md for a description). I will request it be added to the official library (might take a while if there are bugs).