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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,
4 Q+ H2 q$ I. h  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.- z% @8 R! a+ d( A5 _
  Loads are processed by each operator for the following time:
) w2 u) l: h9 r/ l- V3 O: {/ v9 c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 N& v+ O( a+ s: G4 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.1 }  Z8 l9 o" x
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 `% D) L/ e# ?1 Q
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.( n9 n) G. u, k) [4 T* o1 n

/ c4 W( ~/ Y8 z3 Q+ N6 \问题:
% ]4 d9 M* a8 P, z! xAfter running the model for 10,000 days, what was the average number of loads in each process?
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) r/ u% A, C6 V2 g5 U% A' P$ J) j不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
" Q- O* d( [" L, umove into Q_wait /*Capacity is infinte*/
) z) J4 i, D. M7 Y" r/ K8 o. Qmove into Q_process /*Single capacity*/- l* Y6 M. A$ u4 v8 J" k8 O6 F

: v8 O! b+ X2 D) Y8 U5 V1 ~$ ouse R_A for n 60,10 min /*Resource A*/
% j! E1 N- S0 j/ b6 w( o
0 `" O0 L5 Z4 A! @1 X: [8 R' `send to P_B
2 t7 {8 R' s1 |! qend% {" w2 e4 V  X7 w; S( Q
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P_B and P_C is similar, T0 m# T( ]$ n; T# |
triangular 30,60,90 min3 T7 {. |" \7 U* ^! S+ `
u 60,30 min+ Z1 Z5 V, C' y4 q7 W5 x7 P6 D
; j* d' L3 D  I: V; W, Z

: v0 Z1 O/ N# O3 C% p1 \. Fin P_C, you need to send to die.
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/ z9 V7 @; B6 f$ mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
6 U9 l0 d  _, ?/ Y- Z% ]$ Y8 j, m9 R4 e: O* l5 |

1 I; |# M: e& Y: H1 L/ O, _' aRemember 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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