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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,
2 h% R' H* a( C! ^. u4 l' o  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.2 t" r) u4 r9 A
  Loads are processed by each operator for the following time:) z% z2 L( J) E3 w9 W/ |+ \3 V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.9 D) Y: p( V+ U0 ]- J
  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.# w3 j+ p0 F* w* Q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 S* R) m0 Q) {& u4 g9 uSend 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.
8 F, @- Z* \9 @) \/ ~' }* B
/ q$ W. b8 }1 Y* k- O问题:
4 I/ l3 H, E' O* M* X6 @After running the model for 10,000 days, what was the average number of loads in each process?
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( C+ V4 n+ U( |; O/ h5 X) f, ^* S不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  d8 M! D6 E$ @8 S( N2 j$ B  `: emove into Q_wait /*Capacity is infinte*/& l6 A! F* @$ _, T: }
move into Q_process /*Single capacity*/
* l) a8 k5 b$ T" ]4 }& q, H3 U: @$ a# E  P
use R_A for n 60,10 min /*Resource A*/  r4 B9 l+ V2 c. T& g

6 F: G- g: l# O0 B3 ~send to P_B+ Z" ~* ~6 p  h+ j' \* h( H
end
5 n5 W5 w6 f1 r0 a# R8 G5 o2 P+ z$ `( O7 C" }. F/ V
P_B and P_C is similar
5 B- N9 ^4 G8 r+ R* J- Ptriangular 30,60,90 min
7 Y+ k5 y5 H" Du 60,30 min
2 Z- j; u! y6 k, n: t- j8 P
; _0 M9 i: o: B* Y& t
' L' D/ y$ @* V7 H& ~/ Qin P_C, you need to send to die.
, y4 b) M; w3 P8 q
1 ~7 @/ K- {* H6 I' |Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.  c- z! Y' y+ u
' Q2 p* q: s; U; s' j

; `- M9 A- f; P$ l6 e' O% GRemember 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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