基于改进的PID算法控制的注塑机注射速度系统  

An Injection Speed Tracking System Based on Improved PID Algorithm

作　　者：陈黎[1] CHEN Li(College of Applied Technology,Chongqing College of Finance and Economics,Chongqing 402160,China)

机构地区：[1]重庆财经职业学院应用技术学院,重庆402160

出　　处：《塑料科技》2020年第1期109-113,共5页Plastics Science and Technology

摘　　要：注塑机的注射速度是影响塑料成品品质的一个重要因素,实现良好的注射速度控制难度较大。在现有文献研究的基础上,提出了一种改进的PID控制器。该控制器由常规PID控制器加一个设定点滤波器构成。利用注塑机注射速度系统的一阶积分时滞模型,进行了仿真实验,结果表明,改进的PID控制器具有良好的追踪性能和调节性能,并且鲁棒性较好,能够满足注塑机注射速度控制的需求。The injection speed of injection molding machine is an important factor that affecting the quality of plastic products and it is hard for controlling the injection speed. A new improved PID controller based on the existing literature research was proposed which was consisted of a conventional PID controller and a set-point filter. The simulation experiment of the method was carried out under the first-order integrating time-delay model of the injection speed system of the injection molding machine. The results show that the improved PID controller has good tracking performance and adjustment performance, and has good robustness, which can meet the needs of injection speed control of injection molding machine.

关 键 词：注塑机 注射速度 PID控制器 直接分析方法 闭环系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]