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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,3 W7 m& S0 J) t4 `* Q. C( p3 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.
4 d5 K' E6 E8 o) P% ]! @. l  Loads are processed by each operator for the following time:* r8 p# e4 `4 J6 t+ \# Z6 ?7 L7 {
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 b& q$ z; h, N4 h' {6 I  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.$ H  n' X1 ~! f( l! D0 p* b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ s5 y' R) ?7 D& ^8 OSend 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.  g; B+ I* W" n& _& G4 k+ P

6 z: G1 n; o, _% S; ~8 K# `问题:! ~3 ~2 h% z: J. V3 T
After running the model for 10,000 days, what was the average number of loads in each process?
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! V, I1 `" g1 [9 |' N; N2 s不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% \; N* g* }* c5 R! R! Q* Vmove into Q_wait /*Capacity is infinte*/4 P; C3 I0 ?  C# O; v3 a, ^$ |) C
move into Q_process /*Single capacity*/
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: d- G7 e4 h! {4 a2 [6 N5 s" j: r& Zuse R_A for n 60,10 min /*Resource A*/' a& b5 b6 x8 C
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send to P_B
1 d- ?7 Z- h, M) N) D2 @2 ^end
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) o/ D( x! U& ]4 e/ i2 ~. KP_B and P_C is similar% g* k/ U% m7 F. L( K+ x) j
triangular 30,60,90 min( L5 R! s% A( v3 c* \. E( l# Q( t( k6 x
u 60,30 min
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in P_C, you need to send to die.4 ^, E. z' i: _4 S* m" B/ |' z

# J3 `: G; L0 vThen 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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