superlou

I think you're 100% right that a full SPICE simulation isn't the right tool. I was initially making my own simulation based on a simple voltage source and resistive sink model, but I wanted to be able to see effects like the cold-start current surge of a capacitive load, or backfeeding supplies if buses are switched improperly. It started to feel very SPICE like, but most SPICE tools aren't really intended for this kind of real-time demonstration. Especially because I want to also model fluid systems...

In my application, a more qualitative rather than quantitative result would be fine, so modeling changes that are "softer" than the real devices would work. Are you saying that a switch-like element couldn't be simulated in real time because of the number of iterations required to converge the transient analysis? And that is because the rapidly changing state of the circuit requires very small iteration timesteps to converge?

I am trying to use ngspice to model basic high level systems (RLC elements, power supplies, circuit breakers, switches) that a user can interact with in "real time" through a custom GUI. My thought was to use the pipe or server switch, run the simulation once, then use control statements to alter elements and run the next 100 ms iteratively so that the user can't tell the simulation is moving in discrete steps. Is this an appropriate solution, or is there a more elegant approach? Thanks, Louis

Is it possible to control the Qucs solver to generate a "real-time" interactive simulation? I am looking to model the transient behavior of simple circuits while modifications are made to elements like opening a circuit breaker or adjusting a power supply voltage. Would it be feasible to iteratively perform short transient simulations, e.g. 30 ms, carrying the results of each previous solution forward as initial conditions to the next one? Is there a less hacky approach?

Sorry to bring a post back from the dead, but it seemed relevant. If the example you gave has a single shmsink going to multiple shmsrcs, why can't the Snowmix video output shmsink go to multiple sources? I tried it, and gst-launch seems to block when I try to have multiple shmsrces.

I think I may have read to fast. I actually don't need Python executed from within...

I think I may have read to fast. I actually don't need Python executed from within...

(Anoynmous post by me, sorry.)