JP2022021956A - 機械学習装置 - Google Patents
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Abstract
Description
図1は、第1実施形態における機械学習システム50の概略構成を示す説明図である。機械学習システム50は、機械学習装置100と、情報処理装置200と、三次元造形装置300と、熱処理装置400と、検査装置500と、表示装置600とを備えている。
図14は、第2実施形態における機械学習システム50bの概略構成を示す説明図である。第2実施形態における機械学習システム50bでは、予測部170による予測結果に応じて追加形状データを補正する補正部180を機械学習装置100bが備えていること、および、機械学習装置100bによって実行される予測処理の内容が第1実施形態と異なる。その他の構成については、特に説明しない限り、図1に示した第1実施形態と同じである。
(C1)上述した各実施形態の機械学習装置100,100bでは、学習処理において学習部150が実行する機械学習のアルゴリズムは強化学習である。これに対して、学習処理において学習部150が実行する機械学習のアルゴリズムは教師あり学習でもよい。例えば、学習部150は、学習処理において、三次元造形物OBの製造誤差が許容範囲内であることを表す正常ラベル、および、三次元造形物OBの製造誤差が許容範囲を超えることを表す異常ラベルを含んだ学習データセットを用いた教師あり学習を実行して、正常データと異常データとの判別境界を学習モデルとして生成してもよい。この場合、予測処理において、予測部170は、学習モデルを用いて、読み込まれた第1データが正常データに属するのか異常データに属するのかを判定、換言すれば、読み込まれた第1データに基づいて製造される三次元造形物OBの製造誤差が許容範囲内になるか否かを予測できる。
本開示は、上述した実施形態に限られるものではなく、その趣旨を逸脱しない範囲において種々の形態で実現することができる。例えば、本開示は、以下の形態によっても実現可能である。以下に記載した各形態中の技術的特徴に対応する上記実施形態中の技術的特徴は、本開示の課題の一部又は全部を解決するために、あるいは、本開示の効果の一部又は全部を達成するために、適宜、差し替えや、組み合わせを行うことが可能である。また、その技術的特徴が本明細書中に必須なものとして説明されていなければ、適宜、削除することが可能である。
この形態の機械学習装置によれば、学習部は機械学習によって三次元造形物の変形を予測可能な学習モデルを生成できる。
この形態の機械学習装置によれば、材料を変更した場合にも、三次元造形物の変形を予測できる。
この形態の機械学習装置によれば、熱処理の条件を変更した場合にも、三次元造形物の変形を予測できる。
この形態の機械学習装置によれば、教師あり学習と教師なし学習と強化学習とのうちの少なくとも一つによって学習モデルを生成できる。
この形態の機械学習装置によれば、学習モデルを用いて三次元造形物の変形を予測できる。そのため、予測結果が好ましくない場合、ユーザーは、追加形状データに表された追加部分の目標形状を変更することができる。
この形態の機械学習装置によれば、予測結果に応じて補正部が追加形状データを補正して出力する。そのため、出力された補正後の追加形状データを用いて三次元造形物を製造することによって、三次元造形物を寸法精度良く製造できる。
Claims (6)
- 機械学習装置であって、
三次元造形物の目標形状を表す形状データと、製造中における前記三次元造形物の変形を抑制するために前記三次元造形物に追加される追加部分の目標形状を表す追加形状データとを含む第1データと、前記三次元造形物の変形に関する第2データとを取得するデータ取得部と、
複数の前記第1データと複数の前記第2データとを含む学習データセットを記憶する記憶部と、
前記学習データセットを用いた機械学習を実行することによって、前記第1データと前記第2データとの関係を学習する学習部と、
を備える機械学習装置。 - 請求項1に記載の機械学習装置であって、
前記第1データは、前記三次元造形物の材料に関する材料データを含む、機械学習装置。 - 請求項1または請求項2に記載の機械学習装置であって、
前記第1データは、前記三次元造形物に対する熱処理の条件に関する熱処理条件データを含む、機械学習装置。 - 請求項1から請求項3のいずれか一項に記載の機械学習装置であって、
前記学習部は、前記機械学習として、教師あり学習と教師なし学習と強化学習とのうちの少なくとも一つを実行する、機械学習装置。 - 請求項1から請求項4のいずれか一項に記載の機械学習装置であって、
前記学習部による前記機械学習によって生成される学習モデルを用いて三次元造形物の変形を予測する予測部を備える、機械学習装置。 - 請求項5に記載の機械学習装置であって、
前記予測部による予測結果に応じて追加形状データを補正し、補正後の追加形状データを出力する補正部を備える、機械学習装置。
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US20220072800A1 (en) * | 2019-04-30 | 2022-03-10 | Hewlett-Packard Development Company, L.P. | Dimensional compensations in additive manufacturing |
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