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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,4 H  b0 b$ ?9 g, O2 {, x# Y) H
  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./ E) d+ Y# ^# m+ K" v8 m. t* v
  Loads are processed by each operator for the following time:
! X3 `' j6 ?1 t2 s! w+ V( c# E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: }. u0 O' f/ p, x2 n2 x) t2 L* W  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 S" G! l* L  d$ {! W7 Q- J
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ m2 O7 u# n  T; _* o' 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.9 v" V+ _% J0 G' Y

: l" Q" c0 h+ i: G5 x  `问题:- _% l; t& c9 ^
After running the model for 10,000 days, what was the average number of loads in each process?! S9 g; n. i. x. h+ F: ^6 F
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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# b9 K, Q8 k& S; |9 Z- [
move into Q_wait /*Capacity is infinte*/3 r9 j) C6 a& {  Z% {
move into Q_process /*Single capacity*/" V- l% @5 p& J  ~: _

9 h( h0 ]" A; z$ Z/ tuse R_A for n 60,10 min /*Resource A*/
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send to P_B8 j* f- f: z  n& O/ a% b
end$ _7 w0 c4 Y- b  n! ]
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P_B and P_C is similar
+ y: p$ U7 u# E& q0 n, itriangular 30,60,90 min
6 x% K! C; }; \! su 60,30 min" Q& N  r7 Y/ {/ }

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& u8 Q- r, t" M; Nin P_C, you need to send to die.* ^9 q. W4 M4 A0 V) h2 F

# s" y( E0 p% {  p- wThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 N: l/ ~2 ?9 e) N& {
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$ P3 }* m. ]1 Z) j6 E6 B" }
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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