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[CN 201910811466.2] An Online Automatic Correction Method for Slider Position Deviation of Servo Press
[CN 201910811466.2] An Online Automatic Correction Method for Slider Position Deviation of Servo Press Title: An Online Automatic Correction Method for Slider Position Deviation of Servo Press Application Number: CN 201910811466.2 Applicant: Laser Research Institute of Shandong Academy of Sciences Application Date: 2019-8-29 Patent Type: Application for the Invention The present invention discloses an online automatic correction method for slider position deviation of servo press, which uses electronic sensors to detect the deviation between actual position and theoretical position of slider, read the original motor position command an in the previous control cycle and the latest control compensation amount cn calculated in the previous control cycle; update the motor position command compensation amount according to the actual slider position hn fed back by the current system: cn 1 = cn an-g(hn),hn is the measured value of the slider position in the current control cycle generated according to the compensated position command issued in the previous control cycle; the controller issues a position command with compensation bn 1 = an 1 cn 1, where an 1 is the original control position command of the motor in the current cycle, thus eliminating or greatly reducing the deviation between the actual position of the slider and the theoretical value. The method does not require changes to the mechanical structure of the press. Can be applied to a variety of reciprocating mode of movement of the press.
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