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Novel servo press control method

A technology of servo presses and control methods, which is applied to presses, manufacturing tools, etc., and can solve problems such as large amount of calculations

Active Publication Date: 2021-05-18
JINING KELI PHOTOELECTRIC IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] 1. The amount of calculation is large, such as image 3 Many of the control strategies shown require high-speed processors to complete real-time calculations and feedback;

Method used

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Embodiment Construction

[0032] A further description of the present invention will be given below in conjunction with the accompanying drawings and specific embodiments.

[0033] This embodiment proposes a brand-new control strategy for the servo press, and directly extracts the data in the simulation process for analysis and modeling to complete the control of the motor drive system of the servo press.

[0034] This embodiment adopts a data-driven control strategy based on the Koopman operator. The scheme includes three parts, namely servo press drive system, Koopman analysis and dynamic mode decomposition. Specific steps are as follows:

[0035] 1) The high-voltage pulse of the PWM of the servo press drive system controls the rotation of the motor. Here, a total of 8 switching states of the PWM pulse in the two-level three-phase inverter are selected as the input u of the system, including two 0 voltages Lost switch status. The purpose is to simplify the online calculation method in the prior ar...

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PUM

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Abstract

The invention relates to the technical field of motor control, in particular to a novel servo press control method. The novel servo press control method comprises three parts, namely, a servo press driving system, Koopman analysis and dynamic mode decomposition. The method has the beneficial effects that a control strategy is simple and clear, and codes and calculation amount in a controller are greatly simplified; system parameters do not need to be repeatedly debugged in the servo press driving system; and the system parameter perturbation robustness on a motor and a press is high.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a novel servo press control method. Background technique [0002] The patent with the application number CN201911049941.3 is a sensorless servo press full-closed-loop control system and method disclosed by the applicant, which solves the full-closed-loop technical problem of the position of the servo press slider. 5 Equations are substituted into the dynamic equations and control equations of the system and solved one by one. And combined with model predictive control to obtain better experimental results and dynamic performance. But this scheme has the following problems: [0003] 1. The amount of calculation is large, such as image 3 Many of the control strategies shown require high-speed processors to complete real-time calculations and feedback; [0004] 2. Must be familiar with the transmission structure and physical model of the press, such as figure 1 Accurate ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/26
CPCB30B15/26
Inventor 李琦李岸然郭廷善赵璨袁全邵光存李海明张传辉程慧杰
Owner JINING KELI PHOTOELECTRIC IND CO LTD
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