基于PLC技术的造纸机速度链自动化控制方法

Automatic Control Method of Paper Machine Speed Chain Based on PLC Technology

现有方法由于存在动态性能与稳态性能较差的问题,因此通过可编程序控制器的应用设计一种造纸机速度链自动化控制平台,实现多台造纸机速度链的同步自动化控制。首先对其网络结构进行设计,平台网络结构共分为两级:车间监控网络与现场设备网络。上位机模块由上位机、打印机、操作面板OP、主控制器构成,其中上位机由研华工控机和彩色显示器构成,打印机选用的型号为HP LaserJ et 1051,操作面板OP选用的型号为B AND R PP181,而主控制器选用的型号是B AND R 2005。PLC控制模块的硬件采用的是中小型模块式PLC,以及ACS800逆变器、硅整流可控模块等。PLC控制模块的软件采用的是PLC控制软件与组态监控软件。利用设计平台进行八个传动点的自动化速度链控制,对该平台的两种性能进行测试。测试结果表明设计平台能够使各电机在降速和升速中保持较为协调的速差关系,同时其动态性能与稳态性能良好,可以填补造纸机速度链自动化控制方面的市场空白。

Given the poor dynamic performance and steady-state performance of the existing methods,this study designed a paper machine speed chain automation control platform by the application of a programmable controller to realize synchronous automatic control of multiple paper machine speed chains.Firstly,its network structure was designed.The platform network structure was divided into two levels,namely,the workshop monitoring network and the field equipment network.The host computer module was composed of a host computer,a printer,an operation panel OP,and a main controller.To be specific,the host computer consisted of an Advantech industrial computer and a color display.The printer model was HP LaserJet 1051,while the operator panel OP model was B AND R PP181,and the main controller model was B AND R 2005.As for the PLC control module,small-and medium-sized modular PLCs,ACS800 inverters,and silicon rectifier controllable modules were utilized as the hardware part,whereas PLC control software and configuration monitoring software as the software part.The design platform was used for the automatic speed chain control of eight transmission points,and its performance was tested twice.The test results showed that the design platform maintained a more coordinated speed difference relationship between the speed reduction and speed increase of each motor,with favorable dynamic and steady-state performances.It fills the market gap in the automatic speed chain control of paper machine.