Cases | Predictive Maintenance | Illustrative Truck Example

	B	C	D	E	F	G	H	I
1
2					Predictive Maintenance - Illustrative Example
3					Predicting 'Remaining Useful Life' (RUL) for a vehicle using Oil Level (%) data
4					https://www.csselectronics.com/
5
6	Assumptions						Results
7	Oil Level Rate of Decay (%-pts / Km / Day)				0.003%		Warning Date	28/08
8	Remaining Useful Life Warning Threshold (#days)				20		Predicted RUL at Warning Date (#days)	19
9	Oil Level Failure Threshold (%)				10%		True RUL at Warning Date (#days)	16
10							Error (#days)	3
11	Model: RUL = INTERCEPT + SLOPE x [OIL LEVEL]						Error Relative (%)	17%
12	INTERCEPT				-9.9
13	SLOPE				76.0
14
15
16	Failure	Warning	Date	Distance/Day (km)	Oil Level (%)	Warning Threshold (#days)	True RUL (#days)	Predicted RUL (#days)
17			05/07	176	100.0%	10	70	66
18			06/07	240	99.2%	10	69	65
19			07/07	280	98.3%	10	68	65
20			08/07	288	97.4%	10	67	64
21			09/07	0	97.4%	10	66	64
22			10/07	0	97.4%	10	65	64
23			11/07	0	97.4%	10	64	64
24			12/07	0	97.4%	10	63	64
25			13/07	0	97.4%	10	62	64
26			14/07	0	97.4%	10	61	64
27			15/07	440	95.9%	10	60	63
28			16/07	448	94.5%	10	59	62
29			17/07	456	93.0%	10	58	61
30			18/07	440	91.6%	10	57	60
31			19/07	480	90.0%	10	56	58
32			20/07	702	87.7%	10	55	57
33			21/07	715	85.4%	10	54	55
34			22/07	1,002	82.2%	10	53	52
35			23/07	1,020	78.8%	10	52	50
36			24/07	950	75.8%	10	51	48
37			25/07	496	74.1%	10	50	46
38			26/07	240	73.4%	10	49	46
39			27/07	160	72.8%	10	48	45
40			28/07	0	72.8%	10	47	45
41			29/07	0	72.8%	10	46	45
42			30/07	0	72.8%	10	45	45
43			31/07	0	72.8%	10	44	45
44			01/08	0	72.8%	10	43	45
45			02/08	0	72.8%	10	42	45
46			03/08	0	72.8%	10	41	45
47			04/08	0	72.8%	10	40	45
48			05/08	0	72.8%	10	39	45
49			06/08	160	72.3%	10	38	45
50			07/08	240	71.5%	10	37	44
51			08/08	480	70.0%	10	36	43
52			09/08	640	67.9%	10	35	42
53			10/08	656	65.8%	10	34	40
54			11/08	600	63.8%	10	33	39
55			12/08	664	61.7%	10	32	37
56			13/08	640	59.6%	10	31	35
57			14/08	640	57.5%	10	30	34
58			15/08	648	55.4%	10	29	32
59			16/08	656	53.3%	10	28	31
60			17/08	400	52.0%	10	27	30
61			18/08	204	51.3%	10	26	29
62			19/08	426	49.9%	10	25	28
63			20/08	114	49.5%	10	24	28
64			21/08	229	48.8%	10	23	27
65			22/08	430	47.4%	10	22	26
66			23/08	86	47.1%	10	21	26
67			24/08	588	45.2%	10	20	24
68			25/08	849	42.5%	10	19	22
69			26/08	93	42.2%	10	18	22
70			27/08	329	41.1%	10	17	21
71		WARNING	28/08	1,026	37.7%	10	16	19
72		WARNING	29/08	985	34.5%	10	15	16
73		WARNING	30/08	280	33.6%	10	14	16
74		WARNING	31/08	979	30.5%	10	13	13
75		WARNING	01/09	552	28.7%	10	12	12
76		WARNING	02/09	899	25.7%	10	11	10
77		WARNING	03/09	203	25.1%	10	10	9
78		WARNING	04/09	966	21.9%	10	9	7
79		WARNING	05/09	207	21.3%	10	8	6
80		WARNING	06/09	39	21.1%	10	7	6
81		WARNING	07/09	560	19.3%	10	6	5
82		WARNING	08/09	433	17.9%	10	5	4
83		WARNING	09/09	998	14.7%	10	4	1
84		WARNING	10/09	218	14.0%	10	3	1
85			11/09	738	11.6%	10	2
86			12/09	263	10.7%	10	1
87	FAILURE		13/09	454	9.2%	10	0
88	FAILURE		14/09	618	7.2%	10
89	FAILURE		15/09	533	5.5%	10
90	FAILURE		16/09	1,070		10
91	FAILURE		17/09	661		10
92	FAILURE		18/09	976		10
93	FAILURE		19/09	929		10
94	FAILURE		20/09	634		10
95	FAILURE		21/09	404		10
96	FAILURE		22/09	978		10
97	FAILURE		23/09	205		10
98	FAILURE		24/09	432		10
99	FAILURE		25/09	164		10
100	FAILURE		26/09	639		10