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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 }& c% c; x3 Q  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.
* {/ y9 V# B0 \  Loads are processed by each operator for the following time:9 W1 g; h7 ?$ R) R9 [& z4 u
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
$ G  w; N* Q# ]4 x  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.
4 @( b$ ^1 e0 C4 U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
1 T# t5 D- y' x" C  e. L% S' SSend 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.. I3 T) u9 z6 Q3 [  K* Y) V" }0 V, P

, p8 W* c, @9 I% |问题:
" o2 U+ x0 _* W% L- wAfter running the model for 10,000 days, what was the average number of loads in each process?2 ]/ [3 J- F' i
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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
$ H3 k2 E2 H; C: Pmove into Q_wait /*Capacity is infinte*/
( F3 X$ n! g5 o+ z% Q* K1 nmove into Q_process /*Single capacity*/
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1 t3 c- j0 R9 k9 A+ _; cuse R_A for n 60,10 min /*Resource A*/' Q+ m& }( g3 f( ]* `5 n3 c8 A
9 ?4 m( {, _' [& [2 Y; v+ y
send to P_B
* t5 z9 [; H5 yend; Q$ Q* e; ~0 |, P* [2 N

) R. t: Q$ c; L6 H( D. yP_B and P_C is similar3 N) S; D$ d3 e) m6 v* G0 _% \
triangular 30,60,90 min
' d1 Y" x7 T: G2 ^) L+ ?u 60,30 min
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  u+ E( }, a7 H3 V1 rin P_C, you need to send to die.$ `5 t$ u& o7 h- G: f7 a- w
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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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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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