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[CN 201911049941.3] A fully closed-loop control system and method based on sensorless servo press
[CN 201911049941.3] A Full Closed Loop Control System and Method Based on Sensorless Servo Press Title: A Full Closed Loop Control System and Method Based on Sensorless Servo Press Application Number: CN 201911049941.3 Applicant: Jining Keli Optoelectronic Industry Co., Ltd.; Application Date of Laser Research Institute of Shandong Academy of Sciences: 2019-10-31 Patent Type: Invention Application This invention belongs to the technical field of control technology and plastic forming, specifically, it relates to a full closed-loop control system and method based on sensorless servo press. The electronic control system of the whole machine of the invention is equipped with a process curve interpolation algorithm, a dynamic analysis and model building module, a nonlinear prediction controller and a robust controller, and a speed observer with no position sensor is used in the servo drive. The difference between the forming process curve and the actual position of the slider is used as the input of the dynamic analysis and model building module, the output of the given torque is used as the parameter input of the robust controller, the nonlinear predictive controller replaces the role of PI in the robust controller, the output of the nonlinear predictive controller is the parameter input of the robust controller, and the output of the robust controller is used as the input of the Lumberg observer, the problem of overshoot in the position control mode of the traditional servo press is solved.
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