| Summary: | 碩士 === 中原大學 === 機械工程研究所 === 90 === Abstract
This paper presents the study of hydraulic servo system for the high-speed injection molding. The purpose of research is study the influence of delay and reaction time to response characteristics of system. The methods of regulated injection speed collocate with and without melt load were addressed.
In this study, we utilized PI control by analog and digital V/P control cards to understand the response characteristics of system. The human-computer interface through LabVIEW software was also developed to collect LVDT signal. In addition, to discuss the reason of effecting speed response through the HyPneu software simulation.
The results show that under velocity closed-loop control, stable and stepping up the PI velocity control, the response time system will be quickly. On the other hand, large melt load will increase the response time. Moreover, under different velocity commands and V/P control cards, it can be seen that the maximum factor to affect delay time of system was initial velocity of spool.
The results of this study provide a better design rule and function for designers and operators to develop a high-speed injection molding machine with hydraulic servo system.
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