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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,
  @: S- r3 t9 j0 k' ~8 I  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.
0 a' Z2 }' M7 y7 i  Loads are processed by each operator for the following time:
9 n) S3 N' _7 _* L+ C( F  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 P: u! g4 N5 Z  O$ g  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.8 q3 [: @/ {% C& c" c
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 @* u. N, s- ^
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.$ p1 C+ K/ E" ?' d' r5 d. T

) r7 V3 K& l; d8 K* H- e& L问题:
) R2 ?& Y0 @! ]) e9 |1 ZAfter running the model for 10,000 days, what was the average number of loads in each process?# q* L1 L5 ?/ o
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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  M/ G0 c7 ~8 h; o; x
move into Q_wait /*Capacity is infinte*/
1 h1 J7 n, S4 a5 h  e! ?move into Q_process /*Single capacity*/- s" m0 {8 W! o/ c
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use R_A for n 60,10 min /*Resource A*/
7 ?* C+ \) J2 _/ l6 x
8 l5 X* m3 o8 p4 Ysend to P_B) k+ z7 k! J/ F  A2 E! E
end( g4 t" O4 `  A# W7 J
$ v; }; W$ r1 T% [4 R- \( y
P_B and P_C is similar# `1 v; W% w+ I7 X8 k
triangular 30,60,90 min" w! U* F3 R: A0 v7 K, y
u 60,30 min. K( Y( N. F6 I8 G; C* S

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! c* o8 Z" ]' L- d! K  e( B; jin P_C, you need to send to die.3 ^' e1 r; x3 W( r+ N5 E9 h

6 I) S3 ?+ q7 v4 h# q$ }  x9 xThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.* e. U' A2 X5 G
5 h( _' d: Q- j$ r

/ N% K+ f# f4 P9 zRemember 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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