PROBLEM TO BE SOLVED: To provide a method for controlling an irradiation system for use in an apparatus in which a three-dimensional work piece is produced.SOLUTION: A method for controlling an irradiation system 20 comprises the steps of: forming a first irradiation area 18a on a surface of a carrier 16 adapted to receive a layer of raw material powder, irradiating the layer of raw material powder applied onto the carrier 16 in the first irradiation area 18a by a first irradiation unit 22a of the irradiation system 20, while controlling the operation of the first irradiation unit 22a in such a manner that the raw material powder is pre-heated, and thereafter irradiating the layer of raw material powder applied onto the carrier 16 in the first irradiation area 18a by a second irradiation unit 22b of the irradiation system 20, while controlling the operation of the second irradiation unit 22b in such a manner that the raw material powder is heated to a temperature which allows sintering and/or melting of the raw material powder to generate a layer of the three-dimensional work piece.【課題】三次元ワークピースを製造する装置に使用される照射システムを制御する方法の提供【解決手段】原材料粉末の層を受け取るように適合されたキャリア１６の表面上に第１の照射領域１８ａを形成する工程と、第１の照射部２２ａの動作を、前記原材料粉末が予備加熱されるように制御しながら、第１の照射領域１８ａにおいて原材料粉末の層を、照射システム２０の第１の照射部２２ａによって、照射する工程と、その後、第２の照射部２２ｂの動作を、三次元ワークピースの層を形成するために、前記原材料粉末の焼結及び／又は溶融が可能となる温度に前記原材料粉末が加熱されるように制御しながら、第１の照射領域１８ａにおいて、キャリア１６上に塗布された原材料粉末の層を、照射システム２０の第２の照射部２２ｂによって、照射する工程とを含む照射システム２０を制御する方法。【選択図】図１
