Real-Time Synthesis and Control by Corrected Inverse Transfer Function of NC Tables

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Other Title
  • 工作機械の送りテーブルの実時間動特性計測とそれに基づく軌跡制御
  • コウサク キカイ ノ オクリ テーブル ノ ジツジカン ドウトクセイ ケイソク ト ソレニ モトズク キセキ セイギョ エンコ ホカン カコウ ニ オケル ショウゲン トッキ ノ ヨクセイ コウカ
  • -Effects of Compensation at Quadrant Motion for Circular Interpolation-
  • －円弧補間加工における象限突起の抑制効果－

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This report proposes the suppression method of the stick motion at quadrant changes by the real-time inverse transfer function method without identifying the parameters previously. The dynamic characteristics of 2-axis NC table are identified by real-time calculation as the second regression function with consideration of variables for parameters during motion. The real-time compensation is executed by the identified parameters that show the characteristic values at quadrant changes. The trajectory error by the proposed method has been suppressed 37.1% of that by the conventional feedback control during air cutting. As the result of applying to the circular interpolation machining, the contoured profile of the workpiece by our method shows the suppression of 43.6% of the stick motion.

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