求这个题的答案（已解决）
本帖最后由 Amethysp 于 2014-12-20 15:06 编辑1) The ERG in Figure 1 models a system where parts sometimes need to be reworked after they are processed. Assume that: the interarrival times of parts are IID uniformly distributed between 0 and 1 minute, service times of parts at server are IID exponential random variables with mean 0.35 minute, P=0.1 and t_r=10 minutes.
Set RUN(Q,P) Q=0Developa simulation model in Arena of the ERG in the figure by considering that thequeue can receive 50 parts at maximum. Parts arriving when the queue is full donot enter into the system; remanufactured parts have priority respect to theothers and a dedicated queue. Runthe simulation for exactly 10000 parts for 10 replications using L’Ecuyer’smethod to generate pseudo random numbers for random variables RND and file:///C:/Users/BILLHU~1/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png (see Figure 1) and the Arena random numbergenerator for part processing; use the seeds in the table below. Introducefurther assumptions if needed.Estimatethe expected average delay in queue of a part, the expected time-average numberof parts in queue, the expected utilization and the expected number of partsthat could not enter into the system.
Random variableRun 1Run 2Run 3Run 3Run 4Run 5Run 6Run7Run 8Run 9Run 10
ta906327271831865312297828682202986025049063
ts529593093929895674149988856560404219995295
RND247147298206986979892061266228140437287247
2)A production system is composed of 3 stations. The machines in the stationsprocess parts with the (deterministic) processing times shown in the tablebelow.
STATIONTYPEPROCESS TIME(min)
S1Turning2
S2Milling4
S3Drilling4
S4Grinding2
One material handling device transports parts between stations with transportation times as in the table below. There is only one transporter device available in the system and the time to load and unload a part is 30 s (for both operations, i.e., loading + unloading).
Piecesarrive stochastically into the system. Interarrival times are iid according toan exponential distribution with mean equal to 4 minutes. Arrived parts may belongto 3 different families (A, B and C according to the mix shown in the tablebelow) and have the following routings:
TYPEPRODUCT MIXROUTING
A45 %Turning, Milling, Grinding
B45 %Drilling, Turning, Grinding
C10 %Milling, Turning, Drilling, Grinding
Maximum90 parts can stay in the system at the same time. Parts arriving when thesystem is at full capacity are not accepted to enter. hlg1437 发表于 2014-10-27 21:00 static/image/common/back.gif
这个明显是拿学分的啊
》》》？？？？ 给钱么？ 乐游仙 发表于 2014-11-20 22:29 static/image/common/back.gif
给钱么？
已经有做出来哈:)
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