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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,8 Q9 T- w; }5 M# p( t7 u7 s$ I3 d
  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.7 f% C. i: N5 Q3 m! r
  Loads are processed by each operator for the following time:4 S1 v' `7 S! ]; V. t6 ~% h
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- h3 |% G1 u7 D( u  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.6 A8 K: d9 D$ K5 b: L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 n  b( P+ |1 _4 c5 o5 S5 J
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.7 L2 d5 x6 l( z

, i+ r$ A7 }/ V4 D$ a. r问题:+ Z. O. [1 }) Q1 F& C
After running the model for 10,000 days, what was the average number of loads in each process?& Z3 y$ K  I6 @/ q
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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
' l' h( C, T' X' e8 g/ Hmove into Q_wait /*Capacity is infinte*/
# w' J9 b& `6 u3 a% F0 smove into Q_process /*Single capacity*/  q1 I1 y- [. `9 a2 t3 w# S! k
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
) q. r7 i5 N: A1 s  bend! ^& z# f& ~: u" {! R  |

$ q* a! i+ ]" y* i$ `4 ?1 K; c: f1 VP_B and P_C is similar
" c3 L. w6 y  t. {8 ?- ttriangular 30,60,90 min
% D1 U; M0 j; B" J, p0 V; e$ ]u 60,30 min
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in P_C, you need to send to die.
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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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2 f6 A0 @) x' Q( v6 f: C1 t: Z2 DRemember 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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