考虑竞争失效的二维预防性维修策略优化

doi:10.12305/j.issn.1001-506X.2026.06.14

Abstract

Abstract:

Taking the electromechanical products with competing failure phenomenon under continuous monitoring as the research object, the influence of imperfect maintenance on maintenance cost is investigated within finite time horizon. To address competing failures caused by sudden failure and performance-degradation failure, a two-dimensional preventive maintenance （2D PM） strategy is proposed. In this strategy, one dimension of the 2D PM refers to the time interval of imperfect maintenance, and the other dimension refers to the performance-degradation threshold of product degradation failures, whichever occurs first. Considering two corrective maintenance （CM） scenarios, i.e., corrective minimal maintenance and corrective imperfect maintenance, an improved discrete grid method is proposed to optimize the total cost of 2D PM and CM within a finite time horizon. Using the elevator brake as a case study, the effectiveness of the proposed maintenance policy and method is validated. The results indicate that implementing 2D preventive imperfect maintenance combined with minimal corrective maintenance can minimize the overall maintenance cost. In addition, for certain values of the improvement factor, 2D PM with optimal parameters is equivalent to maintenance based on the performance-degradation threshold.

Key words: competing failure, two-dimensional preventive maintenance, finite time horizon, improved discrete grid method, elevator brake

CLC Number:

TH 17

Kaiyan WANG, Chun SU. Optimization of two-dimensional preventive maintenance strategy considering competing failure[J]. Systems Engineering and Electronics, 2026, 48(6): 1925-1932.

Figures/Tables 8

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References 30

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ρ₁	ρ₂	策略1			策略2
ρ₁	ρ₂	Δt*/天	$X_{{\mathrm{PM}}}^* $/mm	C₁/元	Δt*/天	$X_{{\mathrm{PM}}}^* $/mm	C₂/元
0.1	0.1	235	2.00	4 474	280~360	2.00	3 993
0.2	0.2	230	2.00	3 680	280~360	2.00	3 974
0.3	0.3	230	2.00	3 364	280~360	2.00	4 399
0.4	0.4	195	1.85	3 616	280~360	2.00	4 810
0.5	0.5	270~360	2.00	3 490	280~360	2.00	5 109
0.6	0.6	240	2.00	2 966	280~360	2.00	5 365
0.7	0.7	230~360	2.00	3 058	280~360	2.00	5 561
0.8	0.8	240	2.00	3 177	280~360	2.00	5 691
0.9	0.9	255~360	2.00	3 301	280~360	2.00	5 756
1.0	1.0	235	2.00	4 474	280~360	2.00	5 762

M	N	C₁/元	C₂/元
30	360	3 055.3	5 541.9
60	360	3 055.3	5 538.6
60	720	3 057.8	5 553.7
60	1 440	3 058.2	5 561.4
120	1 440	3 058.3	5 559.9
120	2 880	3 058.9	5 563.5
120	5 760	3 059.2	5 565.6
240	11 520	3 059.1	5 565.9

M	N	所提方法		文献[24]方法
M	N	C₁/元	耗时/min	C₁/元	耗时/min
60	360	3 055.3	0.47	3 055.8	1.05
60	720	3 057.8	1.01	3 055.8	1.65
60	1 440	3 058.2	1.81	3 057.6	3.33
120	1 440	3 058.3	5.31	3 058.6	8.27
240	11 520	3 059.1	88.51	3 059.2	117.43

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Optimization of two-dimensional preventive maintenance strategy considering competing failure

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