Robust Fuzzy Predictive Control Method for Asynchronous Switching Process of Nonlinear Injection Molding

An injection molding, fuzzy prediction technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems affecting control performance, the controller cannot perform optimal control, model deviation, etc., to improve production. The effect of efficiency
CN112180738BActive Publication Date: 2022-04-19LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
Publication Date
2022-04-19

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

Aiming at the robust fuzzy predictive control method of nonlinear injection molding asynchronous switching process, which belongs to the field of industrial process control, the method includes the following steps: Step 1: Establish a state space model of nonlinear injection molding asynchronous switching system; Step 2: Through fuzzy Criterion, the state space model of the nonlinear injection molding asynchronous switching system is established as a T‑S fuzzy state space model; Step 3: Transform the T‑S fuzzy state space model of the nonlinear injection molding asynchronous switching system into an extended T‑S S fuzzy state-space model; Step 4: Design a controller based on the extended T‑S fuzzy state-space model of the nonlinear injection molding asynchronous switching system; Step 5: Calculate the controller gain Step 6: Calculate the average dwell time of each stage ; The present invention can effectively avoid the influence of the model mismatch problem caused by model linearization on the control effect of the injection molding system.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the field of advanced control of industrial processes and relates to a robust fuzzy predictive control method for the asynchronous switching process of nonlinear injection molding. Background technique

[0002] With the development of the economy and the increase of the variety of products, a batch process with repeatability and high control precision has appeared in the modern process industry, such as injection molding, pharmaceutical and food production. Due to the complexity of the batch process and the ever-increasing requirements for control accuracy, traditional control methods have limitations.

[0003] On the one hand, when the switching system switches between different stages, there is a situation that the controller cannot switch in time, and at this time the controller of the previous stage cannot control the next stage well. In previous studies, the control method for the multi-stage batch asynchronous switching ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More