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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,( L9 w/ I6 z$ C, T) N, e
  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.: t) J* @/ x. ]% {$ w, v( x  J, A
  Loads are processed by each operator for the following time:  t8 E/ Z) d' H$ m7 p. d5 a/ ^5 A
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ V4 f* c* p& Q# Q" g
  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.# m; _# ?( M9 @5 n7 i
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 I7 E7 r: z; y# E; ~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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. s& u- M2 a' d4 F. o! U) p3 b& Y问题:; t& ?' o1 X2 m
After running the model for 10,000 days, what was the average number of loads in each process?. W# |: |- H2 E! U

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving( S' N9 z+ S: x/ H( t- k/ ]; u
move into Q_wait /*Capacity is infinte*/
% z# J! H3 Y% {8 T: }# cmove into Q_process /*Single capacity*/
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! l4 H% `# ?+ h- huse R_A for n 60,10 min /*Resource A*/
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5 P: h  u3 J5 c1 {1 ^send to P_B
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! Y! G3 x8 {- f* |8 ]P_B and P_C is similar+ L1 X5 b+ t0 |" z% _( V0 k
triangular 30,60,90 min8 [# l7 k: o) R' z) E+ l1 w
u 60,30 min8 Z7 R% w: c4 q+ l- b. B
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in P_C, you need to send to die.: G6 Q8 `: P0 f
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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.% \5 E) t: h; @8 h" Z, V) u- L- Y

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8 [+ G. ?; x1 V) J/ W2 wRemember 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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