描述
棉条的质量取决于两点:一是主、辅牵伸电机以及条筒电机三者的同步性,另一点即是三者之间合理的速度比。三者之间的合理的速度比通过后述的控制策略获得。而三者的同步性依赖于硬件的快速响应和软件的合理性,硬件的特点在前面已述。
对于并条机而言,开环控制可以消除死区,但是对来自牵伸系统干扰的影响无能为力,系统的稳定性较弱;闭环控制可以抑制干扰的影响,系统有着较强的鲁棒性,但不能消除死区。
并条机的控制过程是一个非线性,动态变化的过程,容易受到外部干扰(牵伸波,噪声等),很难建立统一的数学、物理模型。因此,为了消除死区,降低干扰的影响,提高系统稳定性,本文采用短开环和长闭环的混合控制模式,
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主营:世界知名品牌的PLC、DCS系统备件模块
①Allen-Bradley(美国AB)系列产品》
②Schneider(施耐德电气)系列产品》
③General electric(通用电气)系列产品》
④Westinghouse(美国西屋)系列产品》
⑤SIEMENS(西门子系列产品)》
⑥销售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系统、WDPF系统、MAX1000系统备件。
⑧Invensys Foxboro(福克斯波罗):I/A Series系统,FBM(现场输入/输出模块)
顺序控制、梯形逻辑控制、事故追忆处理、数模转换、输入/输出信号处理、数
据通信及处理等。Invensys Triconex:冗余容错控制系统、基于三重模件冗余(TMR)
结构的zui现代化的容错控制器。
⑨Siemens(西门子):Siemens MOORE,Siemens Simatic C1,Siemens数控系统等。
⑩Bosch Rexroth(博世力士乐):Indramat,I/O模块,PLC控制器,驱动模块等。
◆Motorola(摩托罗拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
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