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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,& ?$ c* h, s4 K# L
  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.
! j: v  i5 l9 }. a; U, u8 z  Loads are processed by each operator for the following time:! T% c* t% b5 l8 n% X
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& b( e1 I1 |$ I( W: k
  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., i/ q& d; J6 ]+ G! d# X# P4 L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: A) n/ V. }, D* A# a3 y% NSend 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.6 w( C, v! m4 x3 B: K4 Y

3 C1 x( C! d, j$ Z问题:
$ I1 g5 |8 u/ [7 Q4 U, xAfter running the model for 10,000 days, what was the average number of loads in each process?8 k' L- c# d1 X

" `2 e5 J0 f9 @* Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% |; C  D* R2 A: z! Fmove into Q_wait /*Capacity is infinte*/
2 z' S. N# n# s( H% ^' T) Z; \3 ymove into Q_process /*Single capacity*/
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: B4 X3 N2 w) t' x1 Y4 nuse R_A for n 60,10 min /*Resource A*/9 w8 p& k: L2 \/ U# L
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send to P_B
$ e( Q/ I, |9 {9 r7 f6 J; P- B+ K) |$ \end; }( w4 H& @  c
" L/ ?8 G7 r, Q/ i3 h* |. w  E
P_B and P_C is similar
4 n+ o7 m6 S7 h, J: R6 Ktriangular 30,60,90 min
- Q' _0 F8 Y# cu 60,30 min
5 I8 y0 o# |  T
# l( C  F% }3 w1 M% L9 s0 n: V# W8 z$ a; a/ J* l% R% }0 L! z, S: @
in P_C, you need to send to die.
  L/ x, l& y/ T% O" k, m  J- j# E& c% f! l3 |3 [6 r) h4 x
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.. Y8 i$ B+ l$ b( O/ s

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Remember 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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