公开(公告)号：US06250904B1

公开(公告)日：2001-06-26

申请号：US09253709

申请日：1999-02-22

申请人： Suresh Baddam Reddy ,  John Arthur York ,  Charles Ray Vickers ,  Donald Bruce Sorensen ,  Larry David Sarver

发明人： Suresh Baddam Reddy ,  John Arthur York ,  Charles Ray Vickers ,  Donald Bruce Sorensen ,  Larry David Sarver

IPC分类号： B29C4792

CPC分类号： G01P3/486 ,  B29C43/245 ,  B29C47/0021 ,  B29C47/8845 ,  B29C47/885 ,  B29C47/886 ,  B29C47/92 ,  B29C2947/9258 ,  B29C2947/9259 ,  B29C2947/92647 ,  B29C2947/92885 ,  B29C2947/92923 ,  B29C2947/92933

摘要： Closed loop control apparatus and methods for reducing ripples in an extruded plastic sheet include, for example, a closed loop speed control system having a roll speed sensor, a roll speed controller, and a roll drive. The roll speed sensor is communicatively coupled to the active extruder roll and configured to determine an actual roll speed of the active extruder roll. The roll speed controller is communicatively coupled to the roll speed sensor and utilizes the actual roll speed and desired roll speed to generate a command signal and transmit such signal to the roll drive. The roll drive is communicatively coupled between the roll speed controller and the active extruder roll, and utilizes the command signal to drive the active extruder roll, through its controllers and power electronics.

摘要翻译： 用于减少挤出塑料片中的波纹的闭环控制装置和方法包括例如具有辊速传感器，辊速控制器和辊驱动器的闭环速度控制系统。 辊速度传感器通信地联接到主动挤压机辊并且被配置成确定活性挤出机辊的实际辊速度。 滚转速度控制器通信地耦合到滚转速度传感器，并且利用实际的滚动速度和期望的滚动速度来产生一个命令信号并将这种信号传送到滚动驱动器。 轧辊驱动器通信地连接在辊速控制器和主动挤出机辊之间，并且通过其控制器和电力电子装置利用命令信号来驱动主动挤出机辊。