相依竞争失效模型下细纱机性能退化对成纱质量的影响

doi:10.13475/j.fzxb.20210505709

摘要/Abstract

摘要：

针对细纱机性能退化对纺纱质量影响难以精确表征的问题,首先,利用棉纺生产数据分析了细纱机性能退化对成纱质量指标的影响,研究了质量指标之间的关系。然后,通过细纱机性能退化的参数筛选、指标建立以及突发失效过程预测,对细纱机性能退化过程进行了表征。其次,利用Wiener过程、Weibull分布对细纱机性能退化过程进行了模拟,构建了一种基于Copula函数的细纱机性能退化相依竞争失效模型,并对比分析了模型应用前后纺纱质量关键指标的变化。最后,依托海量棉纺生产数据,验证结果表明构建的相依竞争失效模型较好地解决了细纱机性能退化对纺纱质量影响的问题,而且经模型应用,使得纱线的粗节减少了10.09%,毛羽减少了23.5%,单纱断裂强度提升了4.26%。

关键词: 成纱质量, 相依竞争失效, 细纱机, 退化过程, 可靠性

Abstract:

This study tackles the difficulties in accurate characterization on the influence of the performance degradation of spinning frames on the yarn quality, and the relationship among quality indexes were studied based on data of cotton spinning production. The performance degradation process of spinning frames was characterized by parameter selection, index establishment and sudden failure process prediction. Wiener process and Weibull distribution were adopted to predict the sudden failure process of the performance of the spinning frame, and a copula function based performance degradation dependent competitive failure model of the spinning frame was constructed. The changes of the key yarn quality indexes before and after the application of the model were compared and analyzed. Through exemplar verification, the results show that the dependent competition failure model is able to predict the influence of the performance degradation of spinning frames on spinning quality. After the application of the model, the coarse knot value was decreased by 10.09%, the hairiness value was decreased by 23.5% and the breaking strength of single yarn was increased by 4.26%.

Key words: yarn quality, dependent competition failure, spinning frame, degradation process, reliability

中图分类号:

TS101.8

邵景峰, 董梦园. 相依竞争失效模型下细纱机性能退化对成纱质量的影响[J]. 纺织学报, 2022, 43(06): 171-179.

SHAO Jingfeng, DONG Mengyuan. Influence of performance degradation of spinning frames on yarn quality under dependent competition failure[J]. Journal of Textile Research, 2022, 43(06): 171-179.

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试样编号	条干不匀率/%	细节/ (个· km^-1)	粗节/ (个· km^-1)	毛羽 H	单纱断裂强度/ (cN·tex^-1)	断裂伸长率/%
1	14.79	16	57	2.41	5.99	29
2	14.74	25	73	2.96	6.11	0
3	14.89	19	69	2.03	5.96	17
4	14.87	27	81	2.41	5.88	15
5	14.97	20	80	1.35	6.01	13
6	15.08	21	61	2.54	5.94	10
7	14.95	15	68	2.25	6.08	25
8	14.94	16	71	2.23	5.84	18
9	14.97	14	75	2.18	5.92	15
10	14.81	15	50	2.28	6.04	20
11	14.95	11	66	3.22	5.95	5
12	14.92	13	78	2.86	6.07	5
13	15.05	24	108	2.23	6.05	22
14	14.87	54	85	2.19	6.10	12
15	14.94	43	72	2.78	5.91	13
16	15.08	35	87	2.67	6.03	15
17	15.05	40	78	2.17	5.92	20
18	15.06	32	83	2.18	5.94	28
19	14.97	45	108	2.31	6.04	25
20	14.86	57	83	2.17	6.15	15
21	15.07	44	104	2.98	6.05	19
22	14.96	18	88	2.94	6.07	32
23	14.94	55	85	3.02	5.98	33
24	15.01	28	78	2.07	6.12	35
25	15.00	34	80	3.02	5.96	30
26	15.20	26	58	3.01	6.10	48
27	15.87	32	63	2.38	5.89	45
28	14.74	25	56	2.47	5.94	15

序号	细纱机本体	电气系统
1	罗拉头断裂	电动机损坏
2	前罗拉头发热	线路损坏
3	滚盘轴头断裂	电气过热
4	钢领板升降打顿	线路与电缆接触不良
5	主轴轴承发烫	熔断器损坏
6	车头车尾滚动轴承损坏	电动机过载
7	钢丝圈跑道磨损	元器件参数飘移
8	罗拉偏心	发动机报警
9	锭子转速偏差	开关失灵
10	前胶辊损伤	电压不稳

序号	参数名称	单位
1	锭长	m
2	当前管纱长度	m
3	当前机台总质量	kg
4	锭子速度	r/min
5	前罗拉转速	r/min
6	中罗拉转速	r/min
7	前罗拉线速度	m/min
8	捻度	捻/(10 cm)
9	总牵伸倍数	倍
10	电动机功率	kW
11	后罗拉转速	r/min
12	钢领直径	mm
13	钢领板上升速度	r/min
14	钢领板下降速度	r/min
15	钢领板级升	mm

指标	应用状态 (指标质量变化情况)	细纱机工作时间/d
指标	应用状态 (指标质量变化情况)	0~10	10~20		20~30		30~40
粗节/	前	15.57	13.85	19.28		34.00
(个·km^-1)	后	8.45	9.35	8.50		7.30
毛羽H值	前	2.27	2.45	2.46		2.71
	后	1.46	2.03	1.11		1.25
单纱断裂强度/	前	4.35	4.25	3.57		3.53
(cN·tex^-1)	后	5.96	5.95	6.05		6.08