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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,/ k3 _: T$ w! j& u, [1 |
  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.) ?2 ?8 j7 ^  q
  Loads are processed by each operator for the following time:
* q9 r, o. B0 O6 r* S8 J  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.% p  _% A) ]+ p; p. v0 `7 \
  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.# g7 _2 V8 {. f4 Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 b  y9 c( C$ E, V: _! A
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.6 K5 u5 ]0 p0 _, N6 Z: y

3 k7 Z, ]. F0 Z( M/ d问题:  i$ \/ v" M* Y$ Z7 L3 |  m
After running the model for 10,000 days, what was the average number of loads in each process?3 U- V( z; o& b
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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; b9 V$ ]' G) B) x
move into Q_wait /*Capacity is infinte*/
; z+ ~8 I" i3 }8 R2 i% zmove into Q_process /*Single capacity*/4 R* g1 D' b8 V* y) s  N/ i8 }. b# }
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use R_A for n 60,10 min /*Resource A*/- o, O/ Q$ e- h2 C2 [$ o0 M

; \! ]" N9 t  I' [6 y' Vsend to P_B8 i* s# k" L/ W2 Z. z
end
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P_B and P_C is similar
1 S- u4 n" Y) g" `triangular 30,60,90 min/ I* R8 i+ B. w6 \1 Z9 H2 V8 F
u 60,30 min
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) D# g$ A1 z' T+ V- `in P_C, you need to send to die.: ~' S) x  y$ O( o

( ]" U! v: J& U5 @. cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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