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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,3 E; g- [* P' Y) Y6 d/ R0 R
  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.0 n! L: E; N/ E7 x
  Loads are processed by each operator for the following time:
1 L/ Q2 Q' Q- N& F" l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.1 p/ V1 R2 r4 l: J6 T2 ?/ G1 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.4 x  q* }0 R7 E& p. c) j) K" h
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 W( H: G" s# U" u
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 J2 y4 `+ m( j# n
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问题:* _0 R, Q) r* w8 h% B2 ~
After running the model for 10,000 days, what was the average number of loads in each process?: p7 [+ Q- ]3 u6 M: ~) t
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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 arriving9 `; `9 R1 @/ e0 U4 o3 v( T; ?
move into Q_wait /*Capacity is infinte*/- n3 R( }1 `5 w: Z1 p* d  X2 D- j
move into Q_process /*Single capacity*/8 \# O- j: l# j) M4 P* j$ O

  y# q! M/ L/ ]/ Nuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar! y. U/ _$ R7 I5 {! a; Q4 i" n$ `& y
triangular 30,60,90 min) f6 Y# g+ f! \# m- a
u 60,30 min7 P7 d5 R% J* q9 w

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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 b  x( A( n9 y7 i& i8 E
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* q, z0 N0 O, Z5 g( u/ v. VRemember 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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