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1. 发明授权

US5906778A Control method for injection molding machine 失效
标题翻译：注塑机控制方法
公开(公告)号：US5906778A
公开(公告)日：1999-05-25
申请号：US947882
申请日：1997-10-09
申请人： Tsuyoshi Arai , Takayu Yamazaki
发明人： Tsuyoshi Arai , Takayu Yamazaki
IPC分类号： B29C45/60 , B29C45/67 , B29C45/76 , B29C45/77 , B29C45/82
CPC分类号： B29C45/82 , B29C45/762 , B29C45/77
摘要： A servo valve is connected to a hydraulic cylinder for driving a movable body for shifting. A control signal is applied from a controller to the servo motor for controlling speed of the movable body in an injection molding machine. Control is performed in such a manner that open-loop control of a speed is performed by applying a control signal on the basis of a speed command value to the servo motor in a shifting zone of the movable body including an acceleration region. Closed-loop control is performed by applying a control signal (derived on the basis of a deviation between a speed detection valve and speed command value), to the servo valve in a shifting zone of the movable body including a decelerating region. By such a control method, in which the shifting zone including the accelerating region and the shifting zone including the decelerating region are separated, stability of control, necessary response characteristics, and precision can be maintained in a shifting range.
摘要翻译：伺服阀连接到用于驱动移动体的液压缸。控制信号从控制器施加到伺服电动机，用于控制注射成型机中的可移动体的速度。以通过在包括加速区域的可移动体的移动区域中，基于速度指令值向伺服电动机施加控制信号来执行速度的开环控制的控制。通过在包括减速区域的可移动体的换档区域中将伺服阀施加控制信号（基于速度检测阀和速度指令值之间的偏差导出）来执行闭环控制。通过这样的控制方法，其中包括加速区域和包括减速区域的换档区域的换档区域分离，可以在变速范围内保持控制的稳定性，必要的响应特性和精度。

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