Kabushiki Kaisha Yaskawa Denki

Kyushu University

Ryo Inoue

Yasuhiro Matsutani

Yuji Arinaga

Masanobu Harada

Kenichi Sadakane

Ikuma Murokita

Yasushi Yoshida

Hiroshi Takada

Daisuke Furukawa

Renshi Sawada

Hirofumi Nogami

Tomohito Sekiguchi

Yuma Hayashida

Ryuta Shiraishi

An encoder includes: an optical module that detects angular position information indicating an angular position of a rotating disk within one rotation thereof; a magnetic detecting unit that detects multi-rotation information indicating the number of rotations of the disk; a battery that supplies a power to the magnetic detecting unit when an external power is not supplied to the encoder; and a connector that connects connection terminals of the battery to a substrate to which at least one of the optical module and the magnetic detecting unit is connected, via solders in contact with the connection terminals.

Encoder, servo motor, servo system, and encoder control method

An encoder includes a disc and a sensor. The disc has a circular surface with a central axis and is rotatable around the central axis. The disc has a slit row provided on the circular surface. The slit row includes slits arranged in a circumferential direction of the circular surface around the central axis and in a radial direction of the circular surface. The sensor is provided opposite to the slit row on circular surface. The sensor has a first light receiver and a second light receiver. The first light receiver is configured to output a first light receiving signal as the slit row rotates along the circumferential direction when the disc rotates around the central axis. The second light receiver is configured to output a second light receiving signal as the slit row moves along the radial direction when the disc rotates around the central axis.

Encoder, servomotor, and servo system

It is possible to improve a measurement accuracy of a liquid flow volume, thereby improving reproducibility of a measured value. Provided is a flow volume measuring device including a light source which emits light to a measuring-target region; a light receiving element which receives light scattered at the measuring-target region from the light emitted from the light source; a contact member having translucency with respect to a wavelength of the emitted light and a wavelength of the scattered light, the contact member including a surface which faces the measuring-target region and with which the measuring-target region is contactable over the entire surface; and a flow volume measuring unit which measures a flow volume of liquid flowing through the measuring-target region based upon the scattered light.

Flow volume measuring device, flow volume measuring method, pressure measuring device, and pressure measuring method

Growing community of inventors

Fukuoka, Japan

Ryo Inoue