超高速伺服油壓系統與元件響應時間之研究

Study on the Response Time for a Super High Speed Servo-Hydraulic System and Components

陳柏祺(Po-Chi Chen)

指導教授 ： 陳夏宗

中原大學/工學院/機械工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300575

摘要

摘 要
本論文為研究超高速射出伺服油壓系統，針對此系統在不同製程參數下之高速射出時，系統中各元件與整體所發生之延遲時間和反應時間探討其因素與對系統響應特性的影響。
在本研究中，將對數位式PID控制放大器作較深入的探討，並以此做PID控制；另架設以LabVIEW軟體撰寫的人機介面監控裝置，擷取各種命令訊號及回授訊號，作為響應時間的判定。
實驗結果顯示，系統在速度閉迴路控制且穩定的前提下，響應時間主要會因有負載與射速命令提高而增加，會因系統壓力提高而降低。影響油壓平台響應性的原因，其實可分為電子元件與油壓元件兩方面，藉由不同PID控制放大器的差異性，對速度曲線的極速及響應性會有很大的影響；而油壓系統則是提供此系統所需的能量，若無法達到系統要求，對系統響應性就會有很大的影響。本研究的結果期以提供高速射出成型機之研究者在系統開發時，對性能要求設計上的一個參考依據。

關鍵字

超高速射出 ； 伺服油壓系統 ； PID控制

並列摘要

Abstract
This study is about the hydraulic servo system for the Super high-speed injection molding. The purpose of research is to study the key influence on characteristics of system response by measuring delay and reaction time under different processed setting during high speed injection.
In this study, we utilized PID control by digital V/P control cards to understand the response characteristics of system. The human-machine interface was built by LabVIEW software to input the command and capture the feedback signals to calculate the delay time and reaction time of the high speed injection system.
The results show that under speed closed-loop control, stable and stepping up the PID speed control, the response time increases as load and speed command increasing, but it decreases as hydraulic pressure increases. Actually, the influence factors of the hydraulic system were included electric components and hydraulic components. Different PID controllers influences the speed curve and response.
The results of this study provide a better design rule and function for designers and operators to develop a super high-speed injection molding machine with hydraulic servo system.

並列關鍵字

Super high-speed injection molding ； PID control ； hydraulic servo system

參考文獻

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