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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,
: q3 `6 X3 d$ i& ^+ t  E  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! y. Q  }" M) `& z* g  Loads are processed by each operator for the following time:+ [9 [$ F2 M8 A% p6 n* r7 h$ D! l
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 H& u* N$ @- l
  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.
7 ~$ d5 k8 s* M1 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- u; k5 X0 F& I! @6 V( LSend 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.9 H' G8 ?- }0 K
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问题:5 T8 x9 \1 F. D7 ~  r, y, M
After running the model for 10,000 days, what was the average number of loads in each process?
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$ e4 {2 I) 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
: q* Q" @' V) n/ r9 tmove into Q_wait /*Capacity is infinte*/
; z) X; y! |7 h* j! f, Nmove into Q_process /*Single capacity*/
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  p& N5 k% H, m$ m- Uuse R_A for n 60,10 min /*Resource A*/
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send to P_B
& Q( w7 |* c, e' F) y- O% Vend% Q% @. S: A$ j6 M" |

, h' D  x1 [6 I- D6 ?/ `P_B and P_C is similar
6 P. s) D! K3 M% n: f) ytriangular 30,60,90 min
1 J- z2 K2 L* Du 60,30 min
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in P_C, you need to send to die.
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8 |$ }3 p" ?  |( P! c* h! ^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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1 X; u) ]  }& X+ RRemember 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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