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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,& s! t8 [* f4 g5 w1 k: w$ i* q
  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.
' P5 e" E* \* k, R5 E  Loads are processed by each operator for the following time:
; J; t7 O$ W) y, G5 N1 E9 P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ C! K& t6 R' A4 I/ x
  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.5 a( b# t; b% u  C& ^* U1 d
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 Y6 I* ]/ z. s3 jSend 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.% t5 B$ Z4 _7 I
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问题:( C" S% F* w$ z9 r! D, r
After running the model for 10,000 days, what was the average number of loads in each process?
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, `% _% `) {7 {1 B8 H4 r1 [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving1 \# c* p1 B3 Q* y& q2 E- n- F
move into Q_wait /*Capacity is infinte*/
* x3 i6 E6 D" O- b& `: H3 e9 Gmove into Q_process /*Single capacity*/
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- G" Z& c: ~5 f* b: G/ t$ j' f) Huse R_A for n 60,10 min /*Resource A*/
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send to P_B
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$ x; o& U/ ~4 i- k/ V( {2 N2 cP_B and P_C is similar
2 P: i% X) S- \, b2 o" I; otriangular 30,60,90 min
1 y; D/ T8 h& l0 r7 U5 hu 60,30 min
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' {1 V/ L  R; z( w: u! Hin P_C, you need to send to die.* p7 Y" g! u7 f! t$ E5 }

; q8 ]' r1 w, B$ EThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.: b) i. F* v, a* B' c& u
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& {( D) X2 P4 c6 ^, D( R. KRemember 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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