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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,
& b0 {+ _+ S5 S0 q4 t& X  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.
/ y$ @- P5 W8 U  Loads are processed by each operator for the following time:) j8 W5 |" w1 s
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# B; r- ^/ R1 C6 @2 ]4 C  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.
3 I+ t8 f+ Y8 U- B4 `$ E" e  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 x5 L( X' ^& x$ _; z, N! Y
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:3 P1 B# Q0 O) K: w# W+ E) F1 p" V1 _% c
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
6 ^- i% ~$ V( g! R. pmove into Q_wait /*Capacity is infinte*/* ~$ }, e$ u9 b) f* F" K
move into Q_process /*Single capacity*/
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; T3 g( L) \! Z" \$ g0 wuse R_A for n 60,10 min /*Resource A*/1 \5 m/ ]! J' j+ J2 S

- q& q& d) w! V8 p5 `& Q" G( S! rsend to P_B
" u; M& d  D! b+ Dend
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P_B and P_C is similar- C0 i% o! n- G4 V# `; Y4 D0 p
triangular 30,60,90 min$ ?* n4 J. ?' J* J
u 60,30 min: y. y% d5 Z' m8 L; _

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, _% z- @, Q9 M8 Y& D7 b' v( Ein P_C, you need to send to die.2 z) S. B' K( \- @7 V
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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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6 q9 a6 z% m7 v; @- ~1 NRemember 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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