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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,
6 m* x. e) _+ U6 ^* h* N3 G+ f! [  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.
1 m" J/ I; Y! A3 t. ?  Loads are processed by each operator for the following time:
' M9 X7 K7 U( J& J5 r8 P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 p2 }; O% k6 S2 u0 s- ]# x* r
  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.8 p) i0 [0 l" y# \- b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.  n: X" ]0 F8 D- w
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:% g9 A5 b. g4 k: g0 _' `$ i/ D
After running the model for 10,000 days, what was the average number of loads in each process?7 I" _* l+ ?1 ]0 {
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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 arriving0 G5 D4 T( U7 x6 v) j& P
move into Q_wait /*Capacity is infinte*/8 R1 D: w( C5 }( W5 i
move into Q_process /*Single capacity*/  |* A! j0 f9 f* ~6 U. L; A) F
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use R_A for n 60,10 min /*Resource A*/
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# T7 r# K2 r( b2 S% ]send to P_B4 s/ ^. r/ {9 ?' q+ e; v
end; B5 r. o9 x+ Q" |

" \* ]3 q) A  `7 H' U6 jP_B and P_C is similar$ n3 u% `( h2 c" V! h2 B
triangular 30,60,90 min
; V  v6 P+ C5 ^- y0 V9 w  hu 60,30 min
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" F5 C8 v1 h" O- A; L( lin P_C, you need to send to die.
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( |% Z4 A1 h4 m9 O9 A. g# oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( K6 j) c9 o# b$ j
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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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