Lifetime Prediction for a Cell-on-Board (COB) Light Source Based on the Adaptive Neuro-Fuzzy Inference System (ANFIS)

Table 7

Mdl 2 output vs. LED chip lifetime.

Lifetime maintenance	1500 mA/57.3 °C		1500 mA/87.5 °C		1140 mA/87.4 °C		1140 mA/105.5 °C
	Target	Output	Target	Output	Target	Output	Target	Output
	4118.932	3818.217	2945.860	2783.437	4222.648	4006.339	4418.790	4289.884
	8322.795	7889.633	5952.463	5683.255	8532.367	8159.987	8928.695	8614.042
	12,615.171	12,352.778	9022.367	8862.082	12,932.822	12,713.281	13,533.553	13,354.248
	16,999.856	17,012.808	12,158.298	12,181.137	17,427.922	17,467.437	18,237.447	18,303.561
	21,480.923	21,690.503	15,363.154	15,512.773	22,021.820	22,239.611	23,044.732	23,271.636
	26,062.690	26,289.418	18,640.035	18,788.298	26,718.959	26,931.417	27,960.055	28,156.041
	30,749.799	30,844.624	21,992.257	22,032.690	31,524.090	31,578.631	32,988.384	32,994.020
	35,547.200	35,507.528	25,423.360	25,353.793	36,442.292	36,335.713	38,135.037	37,946.382
	40,460.214	40,447.607	28,937.143	28,872.310	41,479.016	41,375.573	43,405.717	43,193.132
	45,494.532	45,721.041	32,537.699	32,628.263	46,640.114	46,755.556	48,806.551	48,793.963
	50,656.343	51,203.237	36,229.418	36,532.892	51,931.890	52,348.469	54,344.129	54,616.448
	55,952.231	56,634.208	40,017.038	40,401.028	57,361.111	57,889.108	60,025.557	60,384.558
	61,389.370	61,728.828	43,905.687	44,029.615	62,935.171	63,086.614	65,858.507	65,795.451
	66,975.459	66,269.116	47,900.875	47,263.386	68,661.942	67,718.591	71,851.283	70,617.542
	72,718.941	70,138.976	52,008.574	50,019.641	74,550.044	71,666.623	78,012.892	73,852.756