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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,
- ]+ L' ^& F4 c  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.( b6 }2 G2 Y% v" D4 ~9 [
  Loads are processed by each operator for the following time:
/ o) N3 Z- r; A! F1 ~9 V" u& L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 w% n0 E/ d$ z6 R2 k  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.9 Q) n6 `8 H$ J% {) _1 v
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 ]4 p) u; D: ^* O7 {
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:: Y+ M1 t, u; \+ M( P. F9 _
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
$ _- ]8 O5 V) s* U5 hmove into Q_wait /*Capacity is infinte*/' O- R6 h3 `5 N' g( p& C9 |
move into Q_process /*Single capacity*/1 r# R. t' _  X% j& n
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use R_A for n 60,10 min /*Resource A*/
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! ^3 Q" A/ P! O  \' g( f- H0 msend to P_B
% F) `, q/ E) P0 I% Dend
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  D% f2 D3 p+ R. bP_B and P_C is similar" b, L0 ~% B$ V) V9 J+ a% Z- p
triangular 30,60,90 min( f- U: X8 F% T& s+ Y4 P3 s
u 60,30 min1 {  x# T: F8 e( v

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- V1 v3 @8 K1 ~0 w5 a/ ?$ J& ]( f3 t) iin P_C, you need to send to die.8 M0 ^" i3 R- ]$ F7 f
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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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5 E, S. _( s7 i3 JRemember 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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