Study of a Synchronous Positioning Control at Pressure Control between Multi-AC Servomotors Driven in Injection Molding Machine

注塑机多交流伺服电机压力控制同步定位控制研究

• 批准号: 13650264
• 负责人: AKASAKA Noriyuki
• 金额: $ 2.3万
• 依托单位: Kurume National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650264/
• 关键词: Synchronous Positioning Control; Multi-AC servomotors; Injection Pressure Control; Injection Velocity Control; Injection Molding Machine; Bumpless Transfer; Simulator; Similarity Law; 小型シミュレータ装置; 射出・保圧機構; 模擬負荷; 油圧シリンダ

In coping with the trend toward the much higher powered electric-motor driven injection molding machine, multi-AC servomotors control system have become necessary in order to control the molding machine mechanism. Thus, it is inevitable to use the synchronous positioning control technique not to cause the excessive mechanical stress in the molding machine body. Accordingly, it is much necessary to have a load simulator of the molding machine to study the synchronous control technique.Firstly this study clarifies the similarity law between the actual molding machine and the simulator so that we are able to estimate the control performance at the actual machine from that at the simulator and to get the control gain parameters at the actual machine from that at the simulator to realize the same control performance as the simulator. This study also shows the design method of the simulator based on the similarity law at the injection molding control and the manufactured simulator is used to study the synchronous positioning control technique.Secondly it is possible to realize the synchronous positioning control in the injection velocity control by using position feedback signals from each motor pulse-generators. However in the injection pressure control it is much difficult to realize the synchronous positioning control because the pressure-detector signal have to be used in place of the position feedback signals. This study clarifies the synchronous positioning control method during the injection pressure control by using both the pressure-detector signal and position feedback signals. The experimental results by using the simulator showed that the synchronous positioning control error was much less than 1 micrometer in the pressure control. This study also showed the bumpless transfer technique from the injection velocity control to the injection pressure control.

为了适应注塑机向高功率电动机方向发展的趋势，多交流伺服电机控制系统已成为控制注塑机机构的必要手段。因此，不可避免地要使用同步定位控制技术，以免在成型机主体中产生过大的机械应力。因此，委员会认为，为了研究同步控制技术，需要有一台造型机负载模拟器，本文首先阐明了模拟器与实际造型机的相似律，从而可以由模拟器的控制性能来估计实际造型机的控制性能，并由模拟器的控制增益参数来确定实际造型机的控制增益参数，实现同步控制作为模拟器的性能。本文还提出了基于相似律的注射成型控制模拟器的设计方法，并利用所研制的注射成型控制模拟器研究了注射速度控制中的同步定位控制技术。其次，利用各电机脉冲发生器的位置反馈信号实现注射速度控制中的同步定位控制是可能的。然而，在喷射压力控制中，由于必须使用压力检测器信号来代替位置反馈信号，因此很难实现同步定位控制。本文提出了利用压力检测信号和位置反馈信号进行注射压力控制的同步定位控制方法。仿真实验结果表明，压力控制中同步定位控制误差远小于1 μ m。研究了从注射速度控制到注射压力控制的无扰动转换技术。

项目成果

N.Akasaka: "A Synchronous Position Control Method at Pressure Control between Multi-AC Servomotors Driven in Injection Molding Machine"Proceeding of SICE 2003 Annual Conference in Fukui. 2003-8. (2003)

N.Akasaka：“注塑机驱动的多交流伺服电机之间的压力控制的同步位置控制方法”SICE 2003 年福井年会论文集。

赤坂則之: "電動式射出成形機多軸駆動法による圧力制御での位置同期制御法"SICE Annual Conference 2003 in Fukui.

Noriyuki Akasaka：“电动注塑机使用多轴驱动方法进行压力控制的位置同步控制方法”SICE 年会 2003 年在福井举行。

N.Akasaka: "Study of Similarity Law between Electric-motor Driven Injection Molding Machine and Simulator"Mechanical Engineering Congress, 2002 Japan. VII. 273-274 (2002)

N.Akasaka：“电动机驱动注塑机与模拟器之间的相似律的研究”机械工程大会，2002年日本。

赤坂則之: "電動射出成形機の負荷シミュレータの相似則研究"日本機械学会2002年次大会講演論文集. VII. 273-274 (2002)

赤坂敬之：“电动注塑机负载模拟器相似律的研究”日本机械工程师学会2002年年会论文集第273-274页（2002年）。

N.Akasaka: "Study of Similarity Law between Electric-Motor Driven Injection Molding Machine and Simulator at Injection Velocity Control"Trans, of JSME-C. 69-682 (2003)

N.Akasaka：《电动注塑机与注射速度控制模拟器之间的相似律研究》，译，JSME-C。