簇绒地毯的过渡圈高现象及其补偿

Phenomenon of higher transitional loop of tufted carpet and its compensation

过渡圈高现象一直存在于各类簇绒地毯提花系统中,严重影响了多圈高提花效果。在步进伺服提花系统中,步进电动机的动特性响应时间是产生过渡圈高的根本原因。为解决这一问题,通过电动机调速数学模型解释其成因,建立电动机动特性方程,求解得到速度曲线的解析方程,由此精确计算出补偿量。通过对S形和指数形控制曲线的比较,选取指数形曲线设计补偿方案,并提出一套单片机控制方案。补偿方案充分体现了步进伺服在提花控制中的灵活性,并对步进电动机加速曲线的设计提出了一套完整的思路。

As the development of jacquard technology of tufted carpets, the phenomenon of higher transitional loop which seriously influence the effectiveness of multi-level loop jacquard in all kinds of jacquard systems has to be eliminated. The dynamic characteristic response time of step motor is the fundamental cause leading to the phenomenon in the system of step servo jacquard, which is explained through mathematical model of velocity control. For solving this problem, the analytical equation of speed curve was derived from the dynamic characteristics equation of step motor. The amount of compensation was accurately calculated based on the equation. The compensation program based on index shaped curve was selected through comparing S-shaped curve with index shaped curve. Furthermore, a set of singlechip control program was proposed to solve the problem. The compensation program can improve the flexibility of the step servo to control the jacquard system.