proiect fst
DESCRIPTION
proiect fezabilitateTRANSCRIPT
1 Culegerea si prelucrarea datelor dupa primul defect aparut la autoturismul Vol
Nr. Crt. Identificator Timp 1 dacia logan 83000
2 dacia logan 109000
3 dacia logan 128000
4 dacia logan 148000
5 dacia logan 159000
6 dacia logan 178000
7 dacia logan 190000
8 dacia logan 198000
9 dacia logan 215000
10 dacia logan 250000
2Determinarea marimii intervalului de esalonare notat cu Δt
38568.12933
283000
83000
N- numarul de unitati studiate 10
3 Determinarea numarului de defectiuni pe fiecare interval de timp sau interval de esalonare
se adopta Δt=38000
tmax-timpul cel mai mare de defectare
tmin- timpul cel mai mic de defectare
Δ= 38000 [km]
2Δ= 76000 [km]
3Δ= 114000 [km]
4Δ= 152000 [km]
5Δ= 190000 [km]
6Δ= 228000 [km]
7Δ= 266000 [km]
4 Calcularea frecventei cumulate a defectiunilor
%0 0
0 0
0.2 20
0.4 40
0.6 60
0.9 90
1 100
5 Determinarea parametrilor din diagrama Weibull:
parametrul de forma
γ=0 parametrul de pozitie sau initializare
η =150000 parametrul vietii caracteristice
γ = 0
η = 150000
3
e = 2.718
km R(t) F(t) f(t)0 1 0 0
4000 0.999981037216833 1.8962783E-05 1.312887E-088000 0.999848307802721 0.0001516922 4.847832E-08
12000 0.999488131049633 0.00051186895 1.006909E-0716000 0.998787106520975 0.00121289348 1.652447E-0720000 0.997632436739075 0.00236756326 2.383459E-0724000 0.995912377166472 0.00408762283 3.168329E-0728000 0.993516810851684 0.00648318915 3.980924E-0732000 0.990337943494877 0.00966205651 4.799851E-0736000 0.986271112704227 0.0137288873 5.607805E-0740000 0.981215702892156 0.01878429711 6.390986E-0744000 0.975076154647535 0.02492384535 7.138604E-0748000 0.967763054575268 0.03223694542 7.842427E-0752000 0.959194288594127 0.04080571141 8.496396E-0756000 0.949296238618858 0.05070376138 9.096287E-0760000 0.93800499953073 0.06199500047 9.639414E-0764000 0.925267590483172 0.07473240952 1.012437E-0668000 0.911043132029192 0.08895686797 1.055082E-0672000 0.895303958436267 0.10469604156 1.091926E-0676000 0.878036633017406 0.12196336698 1.123092E-06
β=3
6 Se calculeaza toti indicatorii legii de distributie Weibull: R(t), F(t), f(t), Z(t),
β =
80000 0.859242833496926 0.1407571665 1.148757E-0684000 0.838940074480217 0.16105992552 1.169141E-0688000 0.8171622351261 0.18283776487 1.184497E-0692000 0.793959862222061 0.20604013778 1.1951E-0696000 0.769400222098069 0.2305997779 1.201243E-06
100000 0.743567079205906 0.25643292079 1.20323E-06104000 0.716560184713542 0.28343981529 1.201366E-06108000 0.688494465042293 0.31150553496 1.195959E-06112000 0.659498907777765 0.34050109222 1.187312E-06116000 0.629715150628079 0.37028484937 1.175722E-06120000 0.599295787845538 0.40070421215 1.161479E-06124000 0.568402417483984 0.43159758252 1.14486E-06128000 0.537203461707907 0.46279653829 1.126131E-06132000 0.505871800748414 0.49412819925 1.105546E-06136000 0.474582268650746 0.52541773135 1.083345E-06140000 0.443509065319337 0.55649093468 1.059754E-06144000 0.412823144204325 0.5871768558 1.034985E-06148000 0.382689637997227 0.617310362 1.009236E-06152000 0.353265385684448 0.64673461432 9.826895E-07156000 0.324696623096433 0.6753033769 9.555169E-07160000 0.297116895631617 0.70288310437 9.278744E-07164000 0.27064524617431 0.72935475383 8.999056E-07168000 0.245384723516998 0.75461527648 8.717418E-07172000 0.221421247097308 0.7785787529 8.435023E-07176000 0.198822852920679 0.80117714708 8.152949E-07180000 0.177639333595135 0.8223606664 7.87217E-07184000 0.157902272948581 0.84209772705 7.593555E-07188000 0.13962546326103 0.86037453674 7.317879E-07192000 0.122805681260861 0.87719431874 7.045828E-07196000 0.107423788219689 0.89257621178 6.778003E-07200000 0.0934461101976254 0.9065538898 6.514929E-07204000 0.0808260471246149 0.91917395288 6.257056E-07208000 0.0695058542395472 0.93049414576 6.004771E-07212000 0.0594185366169504 0.94058146338 5.758396E-07216000 0.0504897971372077 0.94951020286 5.518199E-07220000 0.0426399802219346 0.95736001978 5.284395E-07224000 0.0357859577657013 0.96421404223 5.057152E-07228000 0.0298429096506623 0.97015709035 4.836594E-07232000 0.0247259586524205 0.97527404135 4.622809E-07236000 0.0203516279984328 0.979648372 4.415848E-07240000 0.0166390988617236 0.98336090114 4.215728E-07244000 0.0135112542011558 0.9864887458 4.022442E-07248000 0.0108955041619757 0.98910449584 3.835955E-07252000 0.00872439634593045 0.99127560365 3.656212E-07
0 50000 100000 150000 200000 250000 3000000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
R(t)F(t)
Weibull cu 2 parametrii
0 50000 100000 150000 200000 250000 3000000
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
R(t)F(t)
Weibull cu 3 parametrii
Culegerea si prelucrarea datelor dupa primul defect aparut la autoturismul Vol DACIA LOGAN
Defect Bietleta stabilizatoare
Flansa amortizoare
Bucsi de bascula
Volanta
Disc de ambreiaj
Amortizoare fata
Amortizoare spate
Injector
Bieleta stabilizatoare
Rulmenti
2Determinarea marimii intervalului de esalonare notat cu Δt
3 Determinarea numarului de defectiuni pe fiecare interval de timp sau interval de esalonare
19000 [km] n1=0 57000 [km] n2=0 95000 [km] n3=3
133000 [km] n4=2
171000 [km] n5=3
209000 [km] n6=3
247000 [km] n7=2
parametrul de forma
parametrul de pozitie sau initializare
parametrul vietii caracteristice
z(t)0
1.42222222222222E-085.68888888888889E-08
0.0000001282.27555555555556E-073.55555555555556E-07
0.0000005126.96888888888889E-079.10222222222223E-07
0.0000011521.42222222222222E-061.72088888888889E-06
0.0000020482.40355555555556E-062.78755555555556E-06
0.00000323.64088888888889E-064.11022222222222E-06
0.0000046085.13422222222222E-06
6 Se calculeaza toti indicatorii legii de distributie Weibull: R(t), F(t), f(t), Z(t),
5.68888888888889E-060.000006272
6.88355555555556E-067.52355555555556E-06
0.0000081928.88888888888889E-069.61422222222222E-06
0.0000103681.11502222222222E-051.19608888888889E-05
0.00001281.36675555555556E-051.45635555555556E-05
0.0000154881.64408888888889E-051.74222222222222E-05
0.0000184321.94702222222222E-052.05368888888889E-05
0.0000216322.27555555555556E-052.39075555555556E-05
0.0000250882.62968888888889E-052.75342222222222E-05
0.00002883.00942222222222E-053.14168888888889E-05
0.0000327683.41475555555556E-053.55555555555556E-05
0.0000369923.84568888888889E-053.99502222222222E-05
0.0000414724.30222222222222E-054.46008888888889E-05
0.0000462084.78435555555556E-054.95075555555556E-05
0.00005125.29208888888889E-055.46702222222222E-05
0.000056448
0 50000 100000 150000 200000 250000 3000000
0.00001
0.00002
0.00003
0.00004
0.00005
0.00006
z(t)
z(t)
0 50000 100000 150000 200000 250000 3000000
0.0000002
0.0000004
0.0000006
0.0000008
0.000001
0.0000012
0.0000014
f(t)
f(t)
0 50000 100000 150000 200000 250000 3000000
0.0000002
0.0000004
0.0000006
0.0000008
0.000001
0.0000012
0.0000014
f(t)
f(t)
0
0
2
2
2
3
1
0 50000 100000 150000 200000 250000 3000000
0.00001
0.00002
0.00003
0.00004
0.00005
0.00006
z(t)
z(t)
0 50000 100000 150000 200000 250000 3000000
0.0000002
0.0000004
0.0000006
0.0000008
0.000001
0.0000012
0.0000014
f(t)
f(t)
0 50000 100000 150000 200000 250000 3000000
0.0000002
0.0000004
0.0000006
0.0000008
0.000001
0.0000012
0.0000014
f(t)
f(t)