Panasonic Intellectual Property Management Co., Ltd.

Ryunosuke Shibagaki

Hideki Ihara

Toshinori Hongu

Naoki Kobayashi

Masashi Samizo

Yoshiyuki Hamano

A direct-diode laser oscillatorcan emit laser light to a laser processing headbased on the driving commands received from a system controller, which can control a laser robotincluding the laser processing head. The direct-diode laser oscillatorincludes the following: laser moduleseach including a plurality of laser diodes connected in series or in parallel; a power supply circuitfor driving the laser modulesat a constant current, and a power controllerfor controlling the power supply circuitbased on the driving commands and performing a fault diagnosis of the laser oscillatorbased on which one of a plurality of previously divided regions of a diagnosis map the current and voltage applied to the laser modulesbelong to.

Laser oscillation device for direct-diode laser method and failure diagnosis method for laser oscillation device

Response fluctuation of output current due to fluctuation of input voltage is reduced by control device (CM) including current fluctuation reduction control means (CFC) that is a regulator for regulating any of an output current command signal, a current detection value, and a control gain when the input voltage fluctuates.

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Osaka, Japan

Ryunosuke Shibagaki