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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,- u; o, O& T0 F! s% j; h" I) U
  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.$ _7 `7 o3 I2 c9 R: x
  Loads are processed by each operator for the following time:" W! e5 u8 T! A
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 F$ z0 Y3 y1 k6 r1 r  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.1 f' Q+ X6 X) q# f& ]
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ e; L4 g7 l  h& X9 l7 }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.* O2 W# s8 Y$ P" K& L0 g1 c, d$ M
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问题:6 O& ^* X. U8 E$ _; b; H
After running the model for 10,000 days, what was the average number of loads in each process?. [! N8 j& b8 P

; \+ x9 `+ [- A- b7 ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving8 |+ {& C& I0 I' d
move into Q_wait /*Capacity is infinte*/3 w' M# Y( c& |8 f
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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! f) d2 F( @0 C6 f" `. P8 i2 ssend to P_B
/ Z& h3 O2 z  {5 L7 G* W: D" o5 tend
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7 D+ R. k+ B* a/ d0 [; H& q( TP_B and P_C is similar
' p' Q# Y9 \6 u1 x8 a1 c7 h- rtriangular 30,60,90 min# P3 T+ l8 l$ P& r7 g) D8 k
u 60,30 min, I, g2 H3 G- K5 O9 U# Z3 w
  H8 _  j, E  N

. ^) y, l  ^1 Q9 _" U1 I) C5 [in P_C, you need to send to die.
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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.3 i/ W0 V, H5 D) k0 R8 q" H) M

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# U7 i* \5 t. F- m/ r* ARemember 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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