A Principal Component Analysis Control Chart Method for Catenary Status Evaluation and Diagnosis

Table 1

Standardized data of the catenary detection parameters in this section.

X1	X2	X3	X4	X5
0.33	0.92	−0.68	−0.68	−0.96
0.40	0.84	−0.95	−1.00	−1.05
0.09	−0.73	−0.79	−0.88	−0.67
1.19	−0.98	−0.72	−0.49	−0.71
−0.60	0.87	0.54	−0.60	−0.63
0.42	0.92	1.93	2.11	−0.36
−0.22	−0.71	−0.99	0.18	0.79
1.64	−1.15	0.55	2.39	1.38
−0.56	1.18	0.14	−0.21	−0.26
0.44	−0.76	−1.32	−0.83	−0.70
0.47	−0.78	−0.91	−0.95	−0.43
0.27	−0.74	−0.53	−0.86	−1.04
−0.08	1.03	0.23	0.70	2.81
−0.27	−1.11	−0.43	−0.24	0.75
0.96	1.14	1.53	0.25	−0.06
−1.00	−1.16	0.23	−0.23	0.73
−1.68	−1.22	1.87	0.19	−0.30
−2.05	−0.93	0.11	−0.06	0.29
1.42	1.17	−0.27	0.05	0.78
0.87	1.00	1.11	0.36	−0.29
−2.17	−1.07	1.34	2.55	2.14
−1.09	1.28	1.01	0.08	−0.07
0.36	0.88	−0.87	−0.73	−0.99
0.49	0.82	−0.92	−0.74	−0.36
0.36	−0.72	−1.22	−0.38	−0.80