磁悬浮驱动织针的控制算法与试验过程研究

Control Algorithm of Magnetic Levitated Knitting Needle and Experimental Research

在传统针织提花圆纬机选针装置的基础上,提出了使电磁与永磁混合力直接作用于织针上,建立悬浮织针"零级传动"代替"多级传动"的针织提花织针理论。通过对磁悬浮驱动织针运动轨迹的分析及仿真,得出织针运动的位移、速度以及加速度曲线,并通过对系统建模,得到电磁、永磁体之间的作用力关系。从理论上对织针悬浮系统的数学建模进行了详细描述,并对织针往复运动的可行性进行了试验,对单织针悬浮控制系统的控制策略进行论述。揭示了利用磁悬浮驱动织针实现特定编织运动轨迹的可行性,为取代传统"机械式多级传动"编织原理,提供了一种新的驱动织针模式研究方法。

Based on traditional needle selection device of knitting jacquard circular machine, the paper proposes the electromagnetic and permanent force mixed directly on knitting needles, and also sets up the jacquard knitting needles theory of magnetic levitated needles ＇zero transmission＇ instead of ＇multi-stage transmission＇. Through anal- ysis and simulation of magnetic levitated knitting needle, it obtains the needle＇s movement displacement, speed and acceleration curves, and with system model, gets the force relationship between eleetromagnet and permanent. Besides, it describes in detail the mathematical modeling of maglev knitting needle in theory, carries out experi- ments of feasibility of knitting needles reciprocating motion, and discusses the control strategy of single magnetic levitated needle. Furthermore, the feasibility of magnetic levitated knitting needle achieving specific wave trajectory is revealed, which can provide a new method for driving knitting needle to replace the traditional ＇mechanical mul- ti-stage transmission＇.