Fanuc Corporation

Shuuji Kudou

Yoshinori Sakai

Yoshikiyo Tanabe

Masahiro Honda

Tetsuro Matsudaira

Toshihiro Fujimori

A motor control device includes a DC/DC converter that steps up or steps down a voltage of a direct current power source and performs charging, while controlling an inrush current to a smoothing capacitor; a monitor circuit for the output of the DC/DC converter; and a control part that turns the operation of the DC/DC converter on and off, and turns the DC/DC converter off when the monitor circuit has detected an abnormality.

Motor control device

A unit having a power supply circuit that converts an input voltage from an input power supply to a predetermined output voltage, includes: an output terminal configured to output the output voltage to the outside of the unit; a switch provided between the power supply circuit and the output terminal; and a switch control part configured to turn off the switch when the input voltage is not applied from the input power supply and turn on the switch when the input voltage is applied.

Unit

A laser power-supply device including a power-supply unit including a voltage input unit into which an AC voltage is inputted, a rectifier circuit, and a plurality of sub-switching regulator units, and a light-emitting unit, in which the plurality of sub-switching regulator units is connected in parallel to output of the rectifier circuit, the light-emitting unit includes a plurality of sub-light-emitting units, each of the sub-light-emitting units includes one light-emitting element row, a current is supplied to the one light-emitting element row from each of the plurality of sub-switching regulator units, and each of the sub-switching regulator units includes a switching circuit, a smoothing circuit, a current detection circuit that detects an output current, and a control circuit that controls the switching circuit on the basis of a current command value and the detected output current.

Laser power-supply device that controls a plurality of light-emitting elements

A constant current control power supply of an embodiment of the present invention includes a switching regulator that includes a switching circuit having a switching device and a rectifier device, a smoothing circuit having reactors and capacitors, a current detection circuit, and a control circuit, for outputting a constant current in accordance with a command value from a controller. When ON indicates a case where the command value commands an output of a higher current than a predetermined value and OFF indicates a case where the command value commands an output of a lower current than the predetermined value, on condition that a pulse operation alternating between the ON and the OFF is inputted, the control circuit amplifies a variation in the command value by a predetermined amplification factor and adds the amplified variation to the command value, and attenuates the added variation with a predetermined time constant.

Growing community of inventors

Yamanashi, Japan

Shuuji Kudou