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Multi-point nonlinear prediction control system of press machine

A non-linear prediction and control system technology, applied in the direction of presses, manufacturing tools, etc., can solve problems such as affecting the position accuracy of the slider, damage to the press and mold, reducing product quality, etc., to eliminate mechanical vibration and eliminate the slider plane. The effect of skewing and improving product quality

Active Publication Date: 2019-08-20
LASER RES INST OF SHANDONG ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This makes the position error of the slider caused by the eccentric load between different pressure points of the slider unable to be compensated by the servo control system, thereby affecting the position accuracy of the slider. In severe cases, the slider may be skewed and the product quality will be reduced. Even damage the press and mold

Method used

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  • Multi-point nonlinear prediction control system of press machine
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  • Multi-point nonlinear prediction control system of press machine

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Embodiment Construction

[0025] Specific embodiments of the present invention are provided below, and it should be noted that the present invention is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solutions of the present application all fall within the scope of protection of the present invention.

[0026] Aiming at the problem of skewing of the slider 4 caused by unbalanced multi-point pressure in the prior art, the present invention provides a multi-point full-closed-loop synchronous driving scheme. The present invention measures the stroke positions near different force application points of the slider 4, respectively controls the rotation speed and torque of the motor 12 corresponding to the different force application points, thereby ensuring that the stroke positions of the slider 4 at different force application points are equal.

[0027] This embodiment introduces a specific solution of the present invention by taking d...

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Abstract

The invention belongs to the technical field, and particularly relates to a multi-point nonlinear prediction control system of a press machine. According to the multi-point nonlinear prediction control system of the press machine, by measuring the travel positions of a sliding block near different force application points are measured, the rotating speed and the torque of a motor corresponding todifferent force application points are controlled through a nonlinear servo control method, and thus the stroke positions of different force applying points of the sliding block are equal, synchronouscontrol and nonlinear control of the multi-point press machine are realized, the defect that mechanical vibration is easily generated is overcome, and the problem that the mechanical coupling multi-point synchronous control leads to inclination of the plane of the sliding block due to too large pressure deviation by is solved.

Description

[0001] A multi-point nonlinear predictive control system for a press. technical field [0002] The invention belongs to the technical field, and in particular relates to a multi-point nonlinear predictive control system for a press. Background technique [0003] The servo press uses the motor as the driving element, and after a series of deceleration and force-increasing mechanisms such as gears, cranks, connecting rods or threaded screws, the slider is pushed up and down, and then the mold is driven to extrude the material. In a large servo press, due to the limitation of the power of a single motor, it is often necessary to use multiple motors to operate synchronously and apply pressure to multiple positions on the slider to generate sufficient pressure. Common methods to ensure multi-point synchronous motion are mainly divided into two categories: mechanical and electrical. The structure of the mechanical method is fixed and the control is simple, but the structure is co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B30B15/00B30B15/26
CPCB30B15/007B30B15/0094B30B15/26
Inventor 高建波李琦李庆卓徐文秋贾中青成巍
Owner LASER RES INST OF SHANDONG ACAD OF SCI
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