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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,  n! m0 U+ X+ O$ g1 x1 C. J, A
  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.6 h! Q/ h7 ]7 k7 F
  Loads are processed by each operator for the following time:
- i' t9 f! I) i* j" u! l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% t, k+ W) i# G) i. I$ T  X! Q0 Y/ S  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.6 E: l# C% Q) T
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ F# I" k" D! _9 a' h7 `3 t
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 s2 i8 D5 E( n& \/ k( F8 j! l
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问题:9 L3 [& T( O# T* b" R% B  {
After running the model for 10,000 days, what was the average number of loads in each process?! v5 c2 I( l: _4 y
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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
/ ~# u7 e4 ], amove into Q_wait /*Capacity is infinte*/; p; L, Y/ ?( S$ Z. V
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/! s& }- Y' U/ S( g2 j' F3 t/ ?; g
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send to P_B+ e. k1 y4 J8 a  d4 b
end# U1 m3 [( W* J/ `6 Z: r7 M  j+ B

  B9 D$ Q% u, @4 q/ e9 LP_B and P_C is similar( j) N, n) F+ S9 g+ p8 Z8 ], I
triangular 30,60,90 min
# b% @% h0 a8 p* q+ iu 60,30 min8 P  m+ L% P, j+ L/ @! F- |

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in P_C, you need to send to die.+ L7 Y- {  n: U* K& ]  t

5 K" G8 o" F( E6 i$ g4 c2 @. {Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* T2 z$ ^1 o4 E; D% y( [- s. `
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+ `% j7 x4 m0 ^) T( B/ F" FRemember 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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