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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,
" q6 |; b; R, y9 ^6 h3 b  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.
! o# W3 ?) q: q# L( E1 b. i  Loads are processed by each operator for the following time:
* c" N7 j5 R4 S  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! R7 b; s7 B( K# l3 u  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.) P1 F3 ~. C1 B) W% |3 O
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# ~4 e: F- y7 x/ k, F6 j$ s
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:* E  g5 N9 p* h" q/ x9 c
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
1 E/ A7 D& _- p; Dmove into Q_wait /*Capacity is infinte*/  E4 `" Z5 i- s5 b! `
move into Q_process /*Single capacity*/$ e) M% d: r: c( O
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use R_A for n 60,10 min /*Resource A*/
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, k! g# s% x; E2 usend to P_B1 j1 B2 ]: ^- j1 m( S
end
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, H. i/ s. i) S1 L: q6 ^2 yP_B and P_C is similar/ k) b: e3 S2 i5 K* F* O. I
triangular 30,60,90 min
& ^* v: L9 X. P4 _u 60,30 min* o4 ~( k4 h. n7 k/ |0 D2 Y3 ]
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$ {# X8 U( s/ Z8 e$ V; xin 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.
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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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