棉精梳机分离罗拉伺服驱动研究

doi:10.13475/j.fzxb.20181204307

摘要/Abstract

摘要：

针对新型棉精梳机分离罗拉采用单伺服电动机驱动功率过大的问题,提出采用双电动机单向混合驱动的方法,在满足分离罗拉运动规律的条件下,通过对混合驱动机构进行合理的动力分配,提出并列型以及偏列型差动轮系混合驱动的概念,并通过虚拟样机进行仿真分析,比较各方案中电动机的动态性能。结果表明:相较于伺服电动机直接驱动分离罗拉,混合驱动方案中驱动电动机的速度、加速度(绝对值)减幅达30%以上,显著改善了电动机的动态性能;该设计还可根据不同种类的棉花工艺需求对车速进行适度的调节,增加机构的柔性,为高效精梳机的研究提供了新思路。

关键词: 精梳机, 分离罗拉, 混合驱动, 差动轮系, 单向电动机, 动力分配

Abstract:

Aiming at solving the problem of excessive driving power provided by the single servo motor equipped for detaching roller in the current versions of cotton comber, the use of dual motor with a one-way hybrid driving mechanism was proposed. Under the preposition that detaching roller provides the required motion, the concept of hybrid drives using parallel and biased differential gear trains was put forward after analyzing the power distribution in the hybrid driving mechanism. The dynamic performance of motor under different schemes was compared to by simulation analysis of virtual prototype. The results show that the speed and acceleration (absolute value) of the driving motor used in the hybrid drive mechanism is reduced by more than 30% compared to that of the single servo motor mechanism, leading to a significant improvement in dynamic performance of the motor. In addition, the design also enables the adjustment of machine speed according to different cotton processing parameters. This new design increases the flexibility of the mechanism, stimulating new ideas for research in high-efficiency combers.

Key words: combing machine, detaching roller, hybrid drive, differential gear train, unidirectional motor, power distribution

中图分类号:

TS112.2

刘立东, 李新荣, 杨海鹏, 卜兆宁. 棉精梳机分离罗拉伺服驱动研究[J]. 纺织学报, 2020, 41(01): 158-164.

LIU Lidong, LI Xinrong, YANG Haipeng, BU Zhaoning. Research on servo drive of detaching roller of cotton combing machines[J]. Journal of Textile Research, 2020, 41(01): 158-164.

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驱动方案	电动机	角速度/(rad·s^-1)			角加速度/(rad·s^-2)
驱动方案	电动机	最小值	最大值	平均值	最小值	最大值	平均值
伺服电动机直接驱动	电动机1	-494.9	280.7	19.62	-66 130	87 020	-180.8
	电动机2	-494.9	280.7	19.62	-66 130	87 020	-180.8
并列型混合驱动	电动机1	20.36	94.04	45.16	-8 267	6 282	17.17
	电动机2	-215.6	-0.019 83	-143	-24 320	18 480	50.52
偏列型混合驱动(I)	电动机1	-147.4	-0.013 56	-97.78	-16 520	12 550	34.32
	电动机2	275.2	275.2	275.2	0	0	0
偏列型混合驱动(II)	电动机1	0.054 59	147.4	49.66	-16 520	12 550	34.32
	电动机2	-156.2	-156.2	-156.2	0	0	0
并列型优化方案	电动机1	0	103.7	22.94	-12 230	12 650	34.26
	电动机2	-156	0	-78.3	-13 850	3 805	0.173 9

驱动方案	角速度最大值/ (rad·s^-1)	角速度最大值降幅/%	角加速度最大值/ (rad·s^-2)	角加速度最大值降幅/%
并列型混合驱动	215.6	56.4	24 320	72.1
偏列型混合驱动	156.2	68.4	16 520	81.0
并列型优化混合驱动	156	68.5	13 850	84.1