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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,
; j# q1 T# s. ?- z) t" u  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.! P9 k# f5 I7 c3 c# }) N
  Loads are processed by each operator for the following time:
! B8 o( S' c! Q6 q, z8 _$ K! k  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* m  @: E; ~" w" p  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." S9 c" g1 H9 a3 u  d# {
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' |) _6 Q0 q% ?% {$ B; \
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./ c6 E0 R2 i7 R) ?$ Z

0 T7 f3 j1 R4 F% S5 E问题:
; ~4 e. y# c4 k4 T) vAfter 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
3 c$ v) F1 @( L; _move into Q_wait /*Capacity is infinte*/
  T/ ~# }3 n4 e: f: tmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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% T5 b; J3 i6 C& H$ c8 d9 z3 csend to P_B
) R# L, i+ V; p. R* \2 G9 Fend: t( }3 x" r7 D# ]
7 G, A. ^. M$ d) s9 Z: k8 V% p. v
P_B and P_C is similar1 F7 C6 S  W2 H, y4 m' t: H
triangular 30,60,90 min0 s6 a' G0 g5 F4 G
u 60,30 min
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in P_C, you need to send to die.4 z* l5 L- |# u- n, ?

; ^: W4 B# P: d( o; |  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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9 \8 N8 J5 N- z* BRemember 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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