日本油空圧学会論文集
Online ISSN : 2185-5293
Print ISSN : 1343-4616
ISSN-L : 1343-4616
水圧駆動樹脂封止プレスの速度および荷重制御に関する研究
基本制御系のシミュレーションと実験
真田 一志石川 格
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ジャーナル フリー

2001 年 32 巻 7 号 p. 178-184

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抄録
Water hydraulics is applied to molding press machines for chip-size-package technology. Velocity and force control are essential for molding quality. In this paper, fundamental control performance is investigated using an experimental water-hydraulic servo system. A single rod cylinder is controlled by a water-hydraulic servo valve. A spring is used to simulate the reaction force of plastic tablets under compression. Piston velocity and force are detected using an encoder and a load cell. These signals are fed back to a PI controller. Mathematical models that represent velocity and force control systems are derived. In particular, time delay of force response is modeled on the assumption of annular flow and equivalent bulk modulus. With regard to closed loop systems, a non-dimensional transfer function and a condition of no overshoot are obtained.
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