中国塑料 ›› 2007, Vol. 21 ›› Issue (1): 95-98.

• 机械与模具 • 上一篇    下一篇

单螺杆挤出机压力一转速闭环控制系统传递函数研究

赵卫哲,闫宝瑞*,郭奕崇   

  1. 北京化工大学机电学院塑料机械及塑料工程研究所,北京100029
  • 出版日期:2007-01-26 发布日期:2021-03-04

Transfer Function of Pressure-speed Close-loop Control System for Single Screw Extruders

ZHAO Wei-zhe,YAN Bao-rui*,GUO Yi-chong   

  1. Institute of Plastics Machinery and Engineering,College of Mechanical and Electronical Engineering,Beijing University of Chemical Technology,Beijing100029, China
  • Online:2007-01-26 Published:2021-03-04

摘要: 通过机理分析法求取了单螺杆挤出机的传递函数—机头压力与螺杆转速之间的动态关系,并通过系统辨识法对其结果进行了验证。结果表明单螺杆挤出机的传递函数是一个比例环节。利用此结果和闭环系统中其他环节的传递函数,给出了挤出机压力一转速闭环控制系统的数学模型。

关键词: 单螺杆挤出机, 传递函数, 机理分析, 试验辨识, 闭环控制

Abstract: Evaluating the transfer function,thedynamic relation between the pressure in the die and the speed of the screwis necessary to studythe pressure close-loop control svstem in a single screw extrud-er.The transfer function ofasingle screwextruder was evaluated via mechanism analysis. It showec that thetransfer function of single screw extruders is a proportional component by the experiment testing method.Using theresultsand thetransfer functions of other components in the close-loop control sys tem,amathematical model in theclose-loop control system of the extruder could be formulated.

Key words: single screw extruder;transfer function, mechanism analysis;experiment testing, pressure close-loop control system

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