Nabco Limited

Shinji Michimoto

Hisayuki Kanki

Naoki Taguchi

Kazuhiro Oba

An automatic door system includes a motor which drives a door to open and close. A CPU operating in accordance with a signal from an encoder operatively coupled to the motor detects the position of the door and prepares and applies a control signal based on the detected door position to a motor drive unit. The motor drive unit alternately drives and brakes the motor. The CPU calculates the speed of the door at a particular door position on the basis of the signal from the encoder and operates to make the door speed equal to the aimed speed for the current door position.

Growing community of inventors

Kobe, Japan

Shinji Michimoto