Search found 4 matches

by mongjie88
Sat Jan 21, 2017 7:22 pm
Forum: Vensim
Topic: Somebody help me please!! ramp and pulse train combination
Replies: 33
Views: 29387

Re: Somebody help me please!! ramp and pulse train combination

1- How can I ovecome the problem 'simulataneous equations' using the Vensim PLE? is there any trick there? The built in functions in Vensim PLE are very scarce. Can you post the model here so we can take a look? Simultaneous equations are common, and usually easily fixed with an adjustment to the l...
by mongjie88
Sat Jan 21, 2017 6:51 pm
Forum: Vensim
Topic: Somebody help me please!! ramp and pulse train combination
Replies: 33
Views: 29387

Re: Somebody help me please!! ramp and pulse train combination

1- How can I ovecome the problem 'simulataneous equations' using the Vensim PLE? is there any trick there? The built in functions in Vensim PLE are very scarce. Can you post the model here so we can take a look? Simultaneous equations are common, and usually easily fixed with an adjustment to the l...
by mongjie88
Sat Jan 21, 2017 5:36 pm
Forum: Vensim
Topic: Somebody help me please!! ramp and pulse train combination
Replies: 33
Views: 29387

Re: Somebody help me please!! ramp and pulse train combination

1 - Every feedback loop must have a stock in it. This is not only a PLE limitation, it's also reality. A simultaneous equation loop might be a workaround for some "stiff model" situation, like a rapid market-clearing process embedded in a model with slow dynamics, but more often it's a co...
by mongjie88
Fri Jan 20, 2017 3:15 pm
Forum: Vensim
Topic: Somebody help me please!! ramp and pulse train combination
Replies: 33
Views: 29387

Somebody help me please!! ramp and pulse train combination

Hi there!! I started to use Vensim PLE (the free version) just a couple of weeks ago, so I have still a long way to go. I would like to ask the following questions: 1- How can I ovecome the problem 'simulataneous equations' using the Vensim PLE? is there any trick there? The built in functions in Ve...