油圧制御による鉄道車両ブレーキに関する研究 : 第1報,ポペット形圧力制御弁によるブレーキ圧力制御(機械力学,計測,自動制御)

概要

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The utilization of a hydraulic system on the friction brake of railway rolling stock permits a small size and fast response of control system. In spite of these advantages, the inner leakage of the conventional control valve for friction brake results in a reliability problem. In this study, a poppet type pressure control valve is developed. The poppet type valve is proposed for preventing inner leakage, and the displacement-pressure characteristic is designed to eliminate the need for a pressure transducer. The compensation methods for the operating force and the change caused by wear of the poppet valve are determined. The experimental results confirm the design constraints, and show that the proposed valve is valid for the specific system.
2002-09-25