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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,
1 d. y# p; _+ |6 Q. O9 H  M  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.' x1 q1 ?/ q, f/ @2 u: L) i2 A, i* H4 P
  Loads are processed by each operator for the following time:
* L3 |2 N0 |7 Q; U; Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.& s% I  d% P2 v9 |. Q# o$ Q" 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.4 y; x  B+ S- R# Z2 j1 z% W2 A, }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 i7 v, Y, c% r8 @! R; T6 }2 K+ M7 sSend 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.' k4 J2 |, N$ J0 c# u

+ K; ]" x0 J$ j' t# \问题:2 x  h% z0 ]5 [' ?( T0 t
After running the model for 10,000 days, what was the average number of loads in each process?! _# l0 N/ l% h6 W7 V+ b
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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 arriving1 h6 O2 i4 m7 @; Z6 b
move into Q_wait /*Capacity is infinte*/1 R, i, C+ |; p0 G5 _3 T
move into Q_process /*Single capacity*/2 ?* l5 q: \/ C4 A( g  {# f
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use R_A for n 60,10 min /*Resource A*/
4 ~5 K0 O9 A( u4 F/ z$ N5 l7 w4 d) ~1 `1 {$ w3 ^% c8 O
send to P_B
  _) j/ U. M% N1 V9 Lend) w! X: w/ H; H. I: T) n8 }$ _
3 a2 m: Q* N" ~, b" I# g' H! f
P_B and P_C is similar
! B2 c$ k% p: y# A+ ?triangular 30,60,90 min
  M6 a& @  J; }# B3 Y' T$ [* Ou 60,30 min
+ l( x5 ^. ^5 f% u) y. g' L2 x9 {. [+ x& {; `" L& N' W* G& P
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in P_C, you need to send to die.
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! w; G, y6 Q" q+ i( Z  T! \Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 D% }% v, V. T/ g- i9 l3 ~

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3 @$ Y8 G2 F% D) C( CRemember 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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