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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,- P4 O7 H2 Y% l& q% B) j
  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 \  N; I: |* \9 I5 E; Q  Loads are processed by each operator for the following time:
* O/ H" S! C9 C% R8 h  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- _+ ^! D$ E) Y; g7 Z% B( N
  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.: b6 F. Q; u  I7 L1 _7 l1 X. E8 H
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 I2 H! S0 ?  V- m; D# R
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.
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问题:, O8 S+ o: I/ ?
After running the model for 10,000 days, what was the average number of loads in each process?
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4 U4 ?$ ?9 M, h) T不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% z) k  @' m9 G2 g$ [move into Q_wait /*Capacity is infinte*/
/ l# S2 H  @# s+ X" Xmove into Q_process /*Single capacity*/3 T! n" b& ~6 I" m

1 n+ H8 W: h4 x& Q2 ^7 F8 o$ |use R_A for n 60,10 min /*Resource A*/. I$ [; @5 e- T3 H6 Z3 S! j: G+ [
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send to P_B
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0 a6 W1 n5 t& n) i7 i5 ]P_B and P_C is similar
/ l) x) y2 v" ztriangular 30,60,90 min: X8 i# D$ j( |: A( S" Z
u 60,30 min
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3 g' e6 g) }: C- J5 Jin P_C, you need to send to die.7 A/ A8 }; p, B9 r+ |  ~) A) N; }
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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.4 }! Z5 C6 J( L. O9 T; ?
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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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