Research Article
Rolling Bearing Degradation State Identification Based on LPP Optimized by GA
Table 3
Result of the rolling bearing degradation state identification.
| Real state | Sample number | Normal state | Slight degradation | Severe degradation | Failure state | Recognition result | LPP | GA-LPP | LPP | GA-LPP | LPP | GA-LPP | LPP | GA-LPP | LPP | GA-LPP |
| Normal state | 1 | 0.8267 | 0.8743 | 0.4836 | 0.3241 | 0.1256 | 0.2520 | 0.3545 | 0.2147 | √ | √ | 2 | 0.8580 | 0.8975 | 0.3348 | 0.2334 | 0.2053 | 0.2683 | 0.2770 | 0.2091 | √ | √ | 3 | 0.9181 | 0.9290 | 0.3580 | 0.2181 | 0.2784 | 0.1682 | 0.2901 | 0.2412 | √ | √ | 4 | 0.6187 | 0.8452 | 0.7820 | 0.2452 | 0.3029 | 0.1314 | 0.3432 | 0.3455 | × | √ | 5 | 0.9036 | 0.9342 | 0.2028 | 0.1465 | 0.2113 | 0.2101 | 0.1982 | 0.1136 | √ | √ |
| Slight degradation | 6 | 0.7578 | 0.1750 | 0.5978 | 0.9012 | 0.2214 | 0.1018 | 0.3010 | 0.2071 | × | √ | 7 | 0.2677 | 0.2205 | 0.8888 | 0.9001 | 0.2036 | 0.1815 | 0.2350 | 0.2274 | √ | √ | 8 | 0.2660 | 0.1827 | 0.8422 | 0.9126 | 0.2151 | 0.1312 | 0.2855 | 0.2562 | √ | √ | 9 | 0.2790 | 0.1921 | 0.8241 | 0.9075 | 0.2382 | 0.1833 | 0.2287 | 0.1821 | √ | √ | 10 | 0.2395 | 0.2275 | 0.8461 | 0.8925 | 0.2108 | 0.2063 | 0.2956 | 0.2632 | √ | √ |
| Severe degradation | 11 | 0.1506 | 0.1231 | 0.2487 | 0.2196 | 0.8675 | 0.9196 | 0.3252 | 0.1753 | √ | √ | 12 | 0.2216 | 0.2100 | 0.3150 | 0.2473 | 0.6015 | 0.8825 | 0.7757 | 0.2104 | × | √ | 13 | 0.2067 | 0.1143 | 0.2821 | 0.2235 | 0.8226 | 0.8333 | 0.2862 | 0.2690 | √ | √ | 14 | 0.1922 | 0.1813 | 0.2421 | 0.2193 | 0.8483 | 0.8777 | 0.2988 | 0.2734 | √ | √ | 15 | 0.1232 | 0.1112 | 0.1726 | 0.1853 | 0.8793 | 0.9169 | 0.2276 | 0.2112 | √ | √ |
| Failure state | 16 | 0.1384 | 0.1028 | 0.2005 | 0.1714 | 0.2308 | 0.2158 | 0.8903 | 0.9072 | √ | √ | 17 | 0.1766 | 0.1433 | 0.1938 | 0.1526 | 0.2457 | 0.2264 | 0.8900 | 0.9157 | √ | √ | 18 | 0.1845 | 0.1664 | 0.1584 | 0.1687 | 0.2283 | 0.2041 | 0.8775 | 0.8909 | √ | √ | 19 | 0.1870 | 0.1659 | 0.1426 | 0.1585 | 0.2012 | 0.1993 | 0.9063 | 0.9305 | √ | √ | 20 | 0.1985 | 0.1753 | 0.2232 | 0.2054 | 0.2106 | 0.1980 | 0.8959 | 0.9231 | √ | √ |
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Note: “√” represents the right recognition result and “×” represents the wrong one.
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