摘要
为了测试聚合物熔体拉伸性能,设计了拉伸流变仪测控系统。利用串行通信方式,通过构建通信协议建立了性能可靠的主、从式测控系统;在压力控制中,利用了具有控制参数在线整定能力的积分分离型PID控制算法,从而实现了压力恒定,达到了恒定挤出量的目的。运用虚拟仪器的设计方法,利用可视化图形编程环境,实现了多功能虚拟仪器软面板。该系统硬件配置简单、软件设计灵活、图形界面友好。
In order to test the elongational behaviour of polymer melts,the paper introduced a system for the measurement of Rheotens based on virtual instrument technology.This system,acted as a host-slave role,ran reliably by establishing serial communication mode and protocol.In order to realize the constant pressure and achieve the aims of constant mass flow rate,a PID arithmetic with integral separation and parameters realtime adjustment was accomplished in the pressure controller.The soft-panel of virtual instru...
出处
《仪表技术与传感器》
CSCD
北大核心
2008年第5期107-109,共3页
Instrument Technique and Sensor
关键词
拉伸流变仪
虚拟仪器
测控系统
聚合物
Rheotens
virtual instrument
detection and control system
polymer
