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Dive into the research topics where Masafumi Sugawara is active.

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Featured researches published by Masafumi Sugawara.


conference of the industrial electronics society | 2004

Control-system development of a high-speed electromagnetic actuator in consideration of the delay in the control force

Junichi Higaki; Akihiko Imagi; Yoshio Yoshikuwa; Tae Hyun Kim; Toshiyulu Yoshizawa; Masafumi Sugawara

A control system for a high-speed electromagnetic actuator contains the problems of electromagnetic nonlinearity, a rising current lag, and a lag in the control force caused by an eddy current. In this paper, we conduct a simulation and a control experiment that take those influences into account. Our results confirmed the effectiveness of the control method, which provides compensation for the nonlinearity of the control force, the rising current lag and the control force lag.


Archive | 1999

Vane type hydraulic actuator

Mutsuo Sekiya; Katsuyuki Fukuhara; Masafumi Sugawara


Archive | 1998

Hydraulic valve timing adjusting apparatus

Katsuyuki Fukuhara; Masafumi Sugawara; Makoto Yamauchi; Chikara Ueno


Archive | 1997

Rotary hydraulic actuator

Mutsuo Sekiya; Katsuyuki Fukuhara; Masafumi Sugawara


Archive | 2001

Displacement sensor and solenoid valve driver

Kazutaka Seo; Masao Morita; Toshie Takeuchi; Yoshiaki Yamazaki; Toshiyuki Yoshizawa; Masafumi Sugawara


Archive | 2001

Lock mechanism for valve timing regulation device

Masafumi Sugawara; Mutsuo Sekiya


Archive | 1997

Rotary hydraulic actuator including groove-like fluid supply paths in a face of a bracket

Mutsuo Sekiya; Katsuyuki Fukuhara; Masafumi Sugawara


Archive | 2002

Valve lift control device

Masafumi Sugawara


Archive | 2003

Variable valve lift device

Masafumi Sugawara


Archive | 2002

Method of forming laminated core and electromagnetic type valve driving device

Masafumi Sugawara; Masatoshi Ueda; Kazuhiko Fukushima; Akihiko Imagi; M. Morita

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