Patent ID: 6818856
Filing Date: 2004-11-16
Classification: B23K,H01S

Abstract:
A laser machining apparatus for machining a workpiece by a laser beam outputted from a laser oscillator in accordance with a laser output command, said laser machining apparatus comprising:laser output commanding means for issuing the laser output command; laser power measuring means for measuring an output power of the laser beam and outputting a measured value of the output power including an error due to a response characteristic thereof; measurement simulating means for estimating the measured value outputted from said laser power measuring means based on the laser output command issued from said laser output commanding means and the response characteristic of said laser power measuring means, and outputting a simulated value of the laser power measurement; and feedback control means for feedback compensating the laser output command in accordance with a difference between the measured value outputted from said laser power measuring means and the simulated value outputted from said measurement simulating means.