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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
% V) s! k9 ^. r3 l% ?: J! y  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.3 Y+ H/ k6 Y/ |
  Loads are processed by each operator for the following time:
* L* t" E" v& f) @1 |& X- @* X  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ r/ M6 R) c% O; \  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
; c) I3 w- H; N* O; [3 U4 |  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- C5 x* P. @! U; Y
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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问题:) g7 }6 h# R+ q2 q3 Y
After running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( F7 U5 l  ~% }7 Z) B: ymove into Q_wait /*Capacity is infinte*/
$ O$ ]0 H/ a& x: ^4 a2 dmove into Q_process /*Single capacity*/
& A* _" d: l+ [- g
" P! b' [+ T9 o) ]  suse R_A for n 60,10 min /*Resource A*// I- S- x# G: C) s$ F! V2 L: ~* R

0 Y( c6 x9 [9 f/ j& Wsend to P_B
7 L: }- ?1 ]$ q: wend
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9 F' a. w% r9 E5 [/ T. rP_B and P_C is similar
0 w; t. C* N8 e2 Vtriangular 30,60,90 min
0 x! b( N9 h, a% X5 N6 M+ w5 Yu 60,30 min
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in P_C, you need to send to die.
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9 a; f# }0 B* P! t7 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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& {4 L: T/ _- _) H5 z- G. N- TRemember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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