ABSTRACT Servo-valves or variable displacement pumps are typically used to control conventional hydraulic injection molding machines (IMMs). Recent developments in electrical drive technology allow to utilize servo-motor driven pumps instead, which is beneficial due to their higher energy efficiency. Their dynamic behavior, however, is significantly different compared to the conventional setup. Thus, currently used mathematical models and control concepts cannot be directly applied. This paper presents a computationally efficient and scalable mathematical model of the injection process for these servo-pump driven IMMs. A first-principles model of the injection machine is combined with a phenomenological model describing the injection process, i.e. the compression of the melt and the polymer flow into the mold. The proposed model is tailored to real-time applications and serves as an ideal basis for the design of model-based control strategies. The feasibility of the proposed model is demonstrated by a number of different experiments. They confirm a high model accuracy over the whole operating range for different mold geometries. Graphical Abstract

中文翻译：

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伺服泵驱动注塑机在填充和包装阶段的面向控制的建模

摘要 伺服阀或变量泵通常用于控制传统的液压注塑机 (IMM)。电力驱动技术的最新发展允许改用伺服电机驱动的泵，由于其更高的能效，这是有益的。然而，与传统设置相比，它们的动态行为明显不同。因此，目前使用的数学模型和控制概念不能直接应用。本文为这些伺服泵驱动的 IMM 提供了一种计算效率高且可扩展的注射过程数学模型。注射机的第一性原理模型与描述注射过程的现象学模型相结合，即熔体压缩和聚合物流入模具。所提出的模型是为实时应用量身定制的，是设计基于模型的控制策略的理想基础。许多不同的实验证明了所提出模型的可行性。它们证实了不同模具几何形状在整个操作范围内的高模型精度。图形概要