Ring spinning is the leading textile technology for the production of short staple yarn, which runs commercially up to a maximum speed of 25 000 rpm. Higher speeds result in yarn damage mainly due to frictional heat. To eliminate this limitation, a friction-free superconducting magnetic bearing (SMB) was introduced as alternative high-speed yarn twist element consisting of a cryostat with an array of superconductors and a levitating permanent magnet ring with a yarn guide. Whereas stable spinning was possible until 30 000 rpm, it turned out that the new SMB twist element is more susceptible to external disturbances resulting in oscillating movements of the magnet. Therefore, a measurement system with an array of 5 synchronized optical laser triangulation sensors and one tachometer was implemented to analyse this motion in detail during spinning with high speeds. To test the system, the spinning speed was varied between 10 000 rpm and 21 000 rpm for different yarn qualities. In g...

中文翻译：

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超导磁性轴承在环锭纺中的高速旋转运动分析

环锭纺是用于生产短短纤维的领先纺织技术，短纤维的商业运行速度最高可达25000 rpm。较高的速度主要是由于摩擦热而导致纱线损坏。为了消除此限制，引入了无摩擦超导磁性轴承（SMB）作为替代的高速纱线加捻元件，该元件由具有超导体阵列的低温恒温器和带有导纱器的悬浮永磁环组成。直到30 000 rpm为止都可以稳定旋转，但事实证明，新型SMB捻线元件更容易受到外部干扰的影响，从而导致磁铁的振荡运动。因此，一个带有5个同步光学激光三角测量传感器和一个转速计的阵列的测量系统被实现为在高速旋转期间详细分析这种运动。为了测试系统，对于不同的纱线质量，纺丝速度在10000 rpm和21000 rpm之间变化。在...