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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,
5 E* E' a: U; g  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.
' _# i  Z' W' ]$ ]3 d4 y/ D5 H8 A  Loads are processed by each operator for the following time:
* N- F+ G5 i7 R5 Y' P( E# V: Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 d, S/ d* m( ^% r; p! j" T
  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.% r% L9 B, g) Q6 j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 N& ?$ ]3 B1 Q$ d9 b
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.
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问题:
  }, h. a( b: Y! z7 V8 ]After running the model for 10,000 days, what was the average number of loads in each process?6 Y8 Q4 ?4 p. j
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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/ A  k' B) {0 m3 y3 W  d
move into Q_wait /*Capacity is infinte*/7 V+ i. {. }+ I4 v. ?& Z
move into Q_process /*Single capacity*/
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' S1 L  o& V% Z, n$ A% }use R_A for n 60,10 min /*Resource A*/
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  ]; }' l0 B$ U1 W7 c2 Z, Vsend to P_B: z" s2 s8 J3 u9 O& k, m
end
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P_B and P_C is similar' }* A- I( \" ^
triangular 30,60,90 min$ ~8 W3 K' _; G! q/ H4 m3 F  b
u 60,30 min
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) t- W5 C% P" w" ~  b2 L. xin P_C, you need to send to die.8 q5 F7 J2 ~6 x! p! H$ }

, Z- B! N, n4 E& l/ c, l1 U+ h8 |Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& y+ ?) q; B3 P8 n6 h5 o$ }) T

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+ b+ F8 p1 @) t$ a! R, pRemember 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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