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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,
- J5 D# f' q& O5 U+ G  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.+ _5 X3 r$ C3 @/ w7 M8 p( R  z
  Loads are processed by each operator for the following time:( R8 G8 z) b2 E2 P
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 R1 Y6 Z- P, `+ e# n1 ?5 n* j
  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.
% N' I( l8 O$ j( i' W& G% h4 ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' D- n4 `: r$ k$ E1 |9 n3 m
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.) n2 N0 G$ l/ C( y5 V* u
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问题:
5 r7 g1 Y7 O: z3 ]* k% SAfter running the model for 10,000 days, what was the average number of loads in each process?
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0 r: a! _# g1 V+ }) {不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# s7 l9 }( o0 k& c1 ]# H7 ^move into Q_wait /*Capacity is infinte*/
3 Y# U0 a7 Y( M% W0 D& J) Y5 _; G* gmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/, o/ U, u% b7 g- F8 `# q

+ B# `2 v8 k0 d' Osend to P_B
0 P' K  ^* P) [# kend
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6 r3 C2 n: I5 l% A4 H" ~P_B and P_C is similar3 S( ]9 h) [* m2 [) `1 H3 j1 y9 Q
triangular 30,60,90 min
& c' Q6 j! }! O3 ^8 Eu 60,30 min2 Z" W- c1 d' P+ d& m

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& V% l5 E9 Z+ q; @! i+ s* din P_C, you need to send to die.4 r/ V4 e7 u" B* J) L4 p

  E5 B( V4 w) p7 q: [Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., E) x+ J8 A/ L: c8 z3 X& S: x7 o) j

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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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