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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,
/ j9 Z" [- Z( u+ n* 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.
! v! W7 e9 v; g# l  Loads are processed by each operator for the following time:
, b) R: h7 \0 ?+ H7 y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% M9 k( d" E2 w* U4 l6 r1 C3 I  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.) ~$ D! F5 V+ x% }/ P0 `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 w- N; ~! f5 Y! A3 T4 y+ RSend 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:) m/ g: N3 V4 s6 i- ]8 a
After running the model for 10,000 days, what was the average number of loads in each process?
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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; p' D+ s) A2 y6 O! N3 W+ M' W
move into Q_wait /*Capacity is infinte*/
: ^( C" C8 w! s9 e; X0 S: @move into Q_process /*Single capacity*/
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4 |$ u: \( q- z. Cuse R_A for n 60,10 min /*Resource A*/
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send to P_B* ?, z3 d" ~6 E$ E) ~5 A
end
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; a. n- W7 h# n. @P_B and P_C is similar" k: V+ B' o: m+ X! v8 M3 j
triangular 30,60,90 min
5 F$ B" Q1 c8 s6 ~2 k3 \. |% ^# Ou 60,30 min
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in P_C, you need to send to die.8 j9 H5 |3 d" \# y8 a

' G. d* F) J- X9 RThen 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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