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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,. B  V+ Q) ]1 u) R: t
  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 F" Z' @# I4 O
  Loads are processed by each operator for the following time:
, y6 B8 h0 u% l# r9 P; W7 S4 R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 U( a2 }% s! s0 g* @$ v
  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.
# d6 _7 K# {  R( q3 `' A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 D9 k4 d$ d7 R0 M7 o$ t6 r
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./ N: u3 F% M- @6 @
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问题:
: B4 M! b6 F( [% P9 VAfter running the model for 10,000 days, what was the average number of loads in each process?
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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
2 O7 Q& m" ~* S6 P" vmove into Q_wait /*Capacity is infinte*/
7 G$ C* P! T; z- Cmove into Q_process /*Single capacity*/* q/ ^6 W5 c. K0 \, h. c
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use R_A for n 60,10 min /*Resource A*/
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1 v* K; F! a8 d( G: q! o- _send to P_B
; Y0 S7 O, `' _, qend
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P_B and P_C is similar
4 D4 w5 y) u4 s) Btriangular 30,60,90 min7 _8 X/ }! _$ A/ K1 ^
u 60,30 min
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& h1 ^* X( L6 t9 K* q9 D( `in P_C, you need to send to die.! Z0 V% i- Z/ n( A1 X5 p
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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