Genetic Algorithm Based Fault Diagnosis and Repair Strategy in Computer Hardware System

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Figure 7.

Different initial population corresponding training parameters

Initial population (number)	Training step	error
10	25	0.0345
15	24	0.0269
20	19	0.0278
25	22	0.0209
30	20	0.0178
35	25	0.0252
40	28	0.0268

The model parameters of the computer hardware system fault diagnosis

Parameter name	Parameter setting
Error threshold	0.001
Learning efficiency	0.02
Network topology	7-9-3
Implicit layer activation function	logsig
Output layer activation function	purelin
Training function	Trainlm
Maximum iteration number	1000

The genetic algorithm runs the parameters

Parameter name	Parameter setting
Population size	32
Maximum evolutionary frequency	48
Selection probability	0.92
Cross probability	0.3
Mutation probability	0.05

The error performance of network training in different values of Pc and Pm

Error		Pc
		0.4	0.5	0.6	0.7	0.8
Pm	0.02	0.158	0.0145	0.1021	0.0208	0.0577
	0.03	0.01266	0.0333	0.1047	0.0772	0.0685
	0.04	0.033	0.0224	0.0304	0.0148	0.035
	0.05	0.0735	0.1385	0.0392	0.0574	0.0749
	0.06	0.0083	0.0462	0.0065	0.0294	0.0263
	0.07	0.0258	0.1356	0.0634	0.0017	0.0026
	0.08	0.099	0.0018	0.0619	0.0024	0.0352

Different fault types are compared to the code

Code	Type
F1	Energized insertion
F2	Battery exhaustion
F3	Virus attack
F4	Insurance burn
F5	CMOS error
F6	BIOS error
F7	Fan damage
F8	Chip burn
F9	Pin oxidation

Small wave packet signal energy values in different states

Type		E3, 0	E3, 1	E3, 2	E3, 3	E3, 4	E3, 5	E3, 6	E3, 7
F1	A phase	20.89497	1.90092	0.53784	0.57775	0.631	0.06302	0.63374	0.56613
	B phase	20.29716	1.83883	0.49647	0.92937	0.38465	0.53339	0.00735	0.19315
	C phase	20.36814	2.03094	0.6404	1.20884	0.285	0.38776	0.8191	0.76402
F2	A phase	21.74152	2.49463	0.55227	0.7002	0.06078	0.21492	0.06117	0.41162
	B phase	22.05262	2.80149	0.54056	0.82839	0.09295	0.01334	0.51159	0.09916
	C phase	21.35739	2.22552	0.3658	0.54142	0.30538	0.00799	0.29674	0.36698
F3	A phase	52.9085	2.64749	0.64554	1.45001	0.59247	0.35469	0.63881	0.40664
	B phase	51.44517	2.24069	1.12016	1.18453	0.1002	0.32647	0.69766	0.73913
	C phase	51.50044	2.11677	0.60058	0.86984	0.05935	0.44582	0.83782	0.26125
F4	A phase	23.78691	2.01025	0.35526	0.99227	0.04609	0.08815	0.61194	0.47845
	B phase	20.89412	2.09448	0.32138	0.79022	1.00049	0.66932	0.75864	0.92088
	C phase	19.18094	1.81479	0.18836	0.25097	0.06462	0.09428	0.26034	0.42114
F5	A phase	25.44712	1.36955	1.07982	1.09213	0.68519	0.03638	0.16046	0.4368
	B phase	21.22982	1.59993	1.05251	1.27646	0.10855	0.6158	0.21551	0.24565
	C phase	24.47241	1.81635	0.55027	1.07477	0.13796	0.09511	0.51013	0.34002
F6	A phase	22.14241	0.71841	0.41587	1.17691	0.45951	0.18965	0.30486	0.49869
	B phase	22.16743	0.59275	1.51896	1.55474	0.36249	0.33495	0.07684	0.63297
	C phase	21.64248	1.05406	1.49921	1.28476	0.71865	0.48852	0.51629	0.34018
F7	A phase	11.47209	2.85734	0.91163	1.42704	1.08527	0.57577	0.26386	0.32958
	B phase	11.55484	2.4755	0.38902	1.56322	0.4103	0.14025	0.90733	0.6437
	C phase	11.70625	2.37743	0.51093	1.14821	0.38942	0.09546	0.90041	0.41444
F8	A phase	21.94349	2.91297	0.50958	0.37141	0.11686	0.23509	0.11704	0.02484
	B phase	21.44111	2.54994	0.30436	0.37427	0.3814	0.61512	0.49593	0.84916
	C phase	20.85718	1.98473	0.6785	1.60634	0.45874	0.69275	0.14515	0.81491
F9	A phase	15.61011	1.96101	0.2859	0.50719	0.28264	0.09245	0.13466	0.31414
	B phase	11.74552	1.69799	0.76886	0.63888	0.55513	0.61363	0.66487	0.7758
	C phase	15.57689	1.04778	0.47912	0.69852	0.40221	0.15222	0.26568	0.13442