著者

池辺 洋 稲葉 清右衛門 伊藤 康平 南 潔 山口 文夫

出版者

The Society of Instrument and Control Engineers

雑誌

計測自動制御学会論文集 (ISSN:04534654)

巻号頁・発行日

vol.1, no.1, pp.84-92, 1965-03-31 (Released:2009-03-27)

参考文献数

3

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This paper presents the results of theoretical analysis and experiment of rotary hydraulic servomotor which consists of a pilot valve and an axial piston motor.It is well known that oil leakage problem can not be ignored in an axial piston motor. Unlike in a linear motor (e.g. cylinder-and-piston type motor), there is considerable oil leakage not only between high and low pressure sides (internal leakage) but also between shell and each side (external leakage).To the authors' knowledge, there have been few papers describing theoretical analysis of rotary hydraulic servomotor taking the external leakage into consideration.In this paper the authors analyze servomotor taking its external and internal leakages into consideration and in this analysis they introduce a new method of approximation for the “load pressure vs. load flow characteristics” of pilot valve.The result of this theoretical analysis fairly well coincides with that of experimental result.From the result of the above mentioned theoretical and experimental researches, it becomes evident that the existence of external leakage is equivalent to an increase in internal leakage.