棉精梳机分离罗拉伺服驱动研究

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。

Research on servo drive of detaching roller of cotton combing machines

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.