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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,
* z8 @5 b5 z! ~" @5 j2 W# b  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.8 Q) d! W- @( h, a, t. d
  Loads are processed by each operator for the following time:! ^0 S3 i  ~3 v% x$ c% e; w, N
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
+ ^" q9 s; y0 T3 f; j: f, ?; e  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.  \! p  \( A2 o1 ?- P* Q8 j! n
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# ~% d( }  R7 T  L# ?0 B. Y1 e' ~
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.6 x  E2 ~6 Q7 i7 Q$ M
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问题:6 c$ R. p0 E# i* M
After running the model for 10,000 days, what was the average number of loads in each process?5 X. E& Z: a3 a% k: H/ u+ T# w8 S1 K

' p9 g5 ?* q( O: [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
! N0 o  F  t' F# {move into Q_wait /*Capacity is infinte*/
: O+ k- U3 z% Cmove into Q_process /*Single capacity*/
  r+ c: C2 h0 p
0 q+ z0 F& f# z: Muse R_A for n 60,10 min /*Resource A*/3 M7 T; ^5 x) H( s1 ]

# o! h  M2 A4 f" x' y' Bsend to P_B
% L  Y( ?# |0 Aend
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. ~1 }1 m9 {+ u  b3 _' B& Q! f$ }' ]P_B and P_C is similar
$ P% T6 ]1 n, i( o, Htriangular 30,60,90 min: ^2 Q; f6 L4 R3 m
u 60,30 min
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in P_C, you need to send to die.: a& }  r' `6 Y9 j! z0 B

- G  C8 o" b1 R1 P; cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.' Z5 K6 Q3 g" _; i
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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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