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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,; U- y$ w1 z  o' g6 y( Q$ Y
  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.
) {  t  c3 R0 m5 r3 m. @  Loads are processed by each operator for the following time:
1 t6 |; c- g0 k, k  A% u  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 H9 B. ~. M1 E; H) g  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.
3 L/ c0 N; O! A9 {  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 t2 {6 h+ Q1 U1 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.
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2 s8 p) T$ ^7 V问题:
) B' U: g, c+ z1 C* r/ O6 TAfter 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' g0 v6 L8 l, C9 O8 ^5 P$ z
move into Q_wait /*Capacity is infinte*// l' u0 z$ W* H8 ?4 B5 m
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/) d0 y1 a0 ?3 S* z' ~0 S4 w
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send to P_B
& Y, q3 S1 l4 Send
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P_B and P_C is similar8 ]3 d3 l7 x; b: p
triangular 30,60,90 min
/ }; F9 z7 M& iu 60,30 min
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in P_C, you need to send to die.
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" X( N* \$ F2 G; AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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8 p- [0 h. F' w' tRemember 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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