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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,
8 ]' \8 a& ]/ U  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.
3 T' v! x9 }5 ]& U0 y  X. |( ?  Loads are processed by each operator for the following time:
4 ^: E% x/ F% _  x$ i$ G- `4 x  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ D9 D# C& i8 x0 C  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.
. U7 i" P4 O* ~4 ~  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 A8 g9 V/ S2 l
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:
% G- m' y; r3 [' s  j5 _After running the model for 10,000 days, what was the average number of loads in each process?* [+ e% R$ C& e6 w

3 y+ f+ q/ J. D4 v7 ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
+ O; u8 z! |7 z( p' hmove into Q_wait /*Capacity is infinte*/
5 {9 Y0 T! @3 n. q0 h$ [' gmove into Q_process /*Single capacity*/
2 h0 G. ]% y2 T. b. u2 x' F; J
6 G( p7 W0 M3 S' p5 X. Quse R_A for n 60,10 min /*Resource A*/
6 t3 y$ [$ e* U, j" f/ g2 T
7 D: X" T! b) E7 n0 j0 F% Gsend to P_B/ |3 |. G/ j4 {% I: }
end7 h. @8 ~  {; Y3 t' v

2 d. t3 d/ z5 M/ a* d0 ^P_B and P_C is similar( ^+ k3 M! b- P0 d- [& M
triangular 30,60,90 min
# t2 h7 c! z2 E) B/ Cu 60,30 min- X; d9 d9 X; i" w, K8 @+ b: I
7 W! z2 [. d- P  t, f$ L

! b, A' p, U% b; L5 k; w5 c5 ]$ g3 gin P_C, you need to send to die.+ c0 C* a, j& b9 j

5 q/ V8 o) f- S8 h4 j* D5 AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.; h. v  S) {" q3 R, H" X* s3 Z  W% r
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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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