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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,
& P- _; p$ ^6 h8 i, Q! u5 N  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.9 d; m- i3 y0 {, B8 q; W
  Loads are processed by each operator for the following time:2 H$ u8 I, D: j7 \, k2 c% t8 x
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
2 r1 z. _1 @! H3 ?; F  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.0 r/ q/ e/ j7 _: B) }7 p; {1 |/ w& l- F
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.% B7 h; G7 c6 o4 [2 E6 w' ~" y
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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1 s- X+ f0 k% h3 @6 v! W5 n问题:" c$ ^9 X3 ]7 W5 w
After running the model for 10,000 days, what was the average number of loads in each process?* v9 o/ N/ _+ E! B* ?' p* c
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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
/ @2 O) L9 U- L9 E2 x" {3 nmove into Q_wait /*Capacity is infinte*/
5 D2 z4 W/ k0 b. p% q! pmove into Q_process /*Single capacity*/' w9 @3 Y0 b$ Q4 u' O; i
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use R_A for n 60,10 min /*Resource A*/# \/ X2 W" J( x) ]; R' G$ n" q, x& Q1 n2 N

9 ^4 w4 G+ r+ U) u: C9 T$ q+ _send to P_B; C+ l, r: @' t  D' r+ o
end
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P_B and P_C is similar1 c1 V1 R3 b) a+ A: J; M( @, ]
triangular 30,60,90 min" ^9 a% a! D8 B7 ?' g" y
u 60,30 min- e4 q) B' j+ h2 ~. Q. ?" R: S0 T

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6 s: f6 j3 W  Y9 v/ o0 e. z5 Iin 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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: ^) A7 A6 r$ y# B8 u+ L, Y0 PRemember 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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