Kabushiki Kaisha Yaskawa Denki

Soki Kaku

Kozo Ide

Tetsuro Izumi

Ryuichi Oguro

Keisei Inoki

Kazuhiro Tsuruta

Nobuhiro Umeda

Takehiko Komiya

A electric motor control device is provided for controlling an electric motor which actuates a movable member of a machine through a transmitting mechanism. When a torque command is given as motion command signal ( ) to servo device ( ), servo device ( ) sends input torque signal ( ) corresponding to motion command signal ( ) to electric motor ( ), which is energized. Movable member ( ) is thus moved, producing vibrations. Servo device ( ) outputs input torque signal ( ) equivalent to input torque signal ( ), and input torque signal ( ) and rotational speed signal ( ) are stored in memory device ( ). Analyzing device ( ) analyzes the frequencies of input torque signal ( ) and rotational speed signal ( ) according to an FFT, and outputs analytical result ( ).

Motor controller

Growing community of inventors

Fukouka, Japan

Soki Kaku