model about the staircase elevator problem exposed by Tom in the facebook forum

Use this forum to post Vensim related questions.
Post Reply
LAUJJL
Senior Member
Posts: 1311
Joined: Fri May 23, 2003 10:09 am
Vensim version: DSS

model about the staircase elevator problem exposed by Tom in the facebook forum

Post by LAUJJL »

HI
Here is th model joined.
if somebody does not understand it, just ask.
I could not upload the published model?
i download the .mdl


JJ
Attachments
option rest in the staircase.vdfx
(16.96 KiB) Downloaded 47 times
option rest in the elevator.vdfx
(16.55 KiB) Downloaded 44 times
staircase5.mdl
(7.73 KiB) Downloaded 44 times
LAUJJL
Senior Member
Posts: 1311
Joined: Fri May 23, 2003 10:09 am
Vensim version: DSS

another better model about the staircase problem

Post by LAUJJL »

Hi
A better version 6 that adds the calculation of the resting time in the elevator, especially if the starting time of the rest is close to the end of the climbing the elevator. It renames too most of the auxiliaries to initials, which is clearer. It calculates as initial the total time spent, showing that SD or capitalisation is not necessary to calculate it contrarily to the method used in the version 5. I have added another model version 7 with only two time-steps, that does not use any stock and where all the auxiliaries and stock of the version 5 are suppressed. The best way to use the model is with synthesim varying the ‘time starting the rest’ on the blue shadow variable. Both new models can be downloaded from the Vensim forum author LAUJJL.
Best
JJ
Attachments
staircase7.mdl
(9.56 KiB) Downloaded 50 times
staircase6.mdl
(12.16 KiB) Downloaded 47 times
tomfid
Administrator
Posts: 3467
Joined: Wed May 24, 2006 4:54 am

Re: model about the staircase elevator problem exposed by Tom in the facebook forum

Post by tomfid »

Interesting. I haven't really absorbed this yet, but my approach is quite different. https://metasd.com/2022/02/escalator-solutions/
Post Reply