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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,
+ }9 Y/ R. ], ^' l3 }% 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 z, G, R. i  Loads are processed by each operator for the following time:( ?. }* `7 W* d2 O) G' q
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; `7 Y% _! u- p/ y- Y  |  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.
+ X+ e# ~" ^( D  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" L- O1 q  f" T! V0 ^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.0 [$ q* K% H* o0 b* e- l: [2 i- `
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问题:
0 o% S3 i5 F3 m2 S4 V8 GAfter running the model for 10,000 days, what was the average number of loads in each process?- `) R9 D. W+ l5 G) [( u; ^/ e0 f

# ^7 q1 Q! m# ~9 O不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
8 q" c1 c% F/ I0 z% ]# O  t0 e: _move into Q_wait /*Capacity is infinte*/. A# u1 Z0 E  {9 k* k
move into Q_process /*Single capacity*/# q2 E" ?- ?% [

* p0 E! p/ @* u3 Vuse R_A for n 60,10 min /*Resource A*/
1 A. A, f" D/ B+ f9 d0 M  C
, s9 H; H# }9 o$ s- n7 asend to P_B9 z' w. n. I2 m
end
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' _. x- J4 A! h9 l" {3 r" y# L5 p1 f# VP_B and P_C is similar
/ z: y2 k6 `& g! W) o; f6 Q6 ntriangular 30,60,90 min6 n. c7 v! N8 i6 f6 A( K; u+ O
u 60,30 min' u* }) i  X/ t0 A# v# t

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* P1 c- s5 f: B' }# P' Fin P_C, you need to send to die.3 F& `8 H  E5 }2 k! y" ^6 A7 z
- {/ A& L' X2 A% o( a* y
Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 q$ A  w9 Q& \5 P8 ^. @3 D$ V

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' f5 z: Z* d! b8 k" r5 a! 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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