Unlock instant, AI-driven research and patent intelligence for your innovation.

A Time Domain Decomposition Acceleration Method for Model Predictive Controller

A technology of model predictive control and model prediction, which is applied in adaptive control, general control system, control/regulation system, etc., can solve the problems of slow convergence speed and low information transfer efficiency, so as to improve the convergence speed and information transfer efficiency. Effect

Active Publication Date: 2022-03-11
TSINGHUA UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a time-domain decomposition acceleration method for a model predictive controller. Aiming at the problems of low information transfer efficiency and slow convergence speed in the prior art, the prediction equation of the controlled system is used to perform the calculation of state variables. Cross-Node Prediction

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Time Domain Decomposition Acceleration Method for Model Predictive Controller
  • A Time Domain Decomposition Acceleration Method for Model Predictive Controller
  • A Time Domain Decomposition Acceleration Method for Model Predictive Controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] The time-domain decomposition acceleration method of the model predictive controller proposed by the present invention, its flow chart is as follows figure 1 shown, including the following steps:

[0066] (1) According to the performance requirements of the controlled system, a model predictive control problem is established, which includes the objective function and constraints. The expression of the model predictive control problem is as follows:

[0067]

[0068] satisfy:

[0069] x t+1 =Ax t +Bu t ,t=1,...,N

[0070]

[0071] Among them, N is the length of the prediction time domain, t is any moment in the prediction time domain, Q and R are the weight matrix of state variables and control variables respectively, which are artificially set according to the performance of the controlled system, and A and B are the state The coefficient matrix and the control coefficient matrix are obtained according to the prediction model of the controlled system, is th...

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

PUM

No PUM Login to View More

Abstract

The invention relates to a time-domain decomposition acceleration method of a model predictive controller, which belongs to the technical field of automatic control. The method of the invention decomposes the model prediction control algorithm in the prediction time domain, regards each group of state quantities in the prediction time domain as nodes in the topological structure, and uses the prediction equation of the system to realize the cross-node transmission of information. Then use the consistency optimization method to iteratively calculate the problem, and update the original variables, consensus variables and dual variables alternately until the convergence criterion is met. The present invention improves the efficiency of information transmission between nodes through the cross-node transmission of information. Compared with the traditional method in which information is only transmitted between adjacent nodes, this method greatly improves the convergence speed of the algorithm.

Description

technical field [0001] The invention relates to a time-domain decomposition acceleration method of a model predictive controller, which belongs to the technical field of automatic control. Background technique [0002] With the continuous development of automatic control technology, higher requirements are put forward for the performance of the control system. In order to maximize the potential performance of the controlled system, it is necessary to comprehensively consider various constraints and nonlinear characteristics of the controlled system. For example, in the field of autonomous driving, it is necessary to consider the nonlinear characteristics caused by automobile tires and power systems, and in the chemical industry, it is necessary to consider that certain variables (temperature, pressure, etc.) required by safe production and environmental protection do not exceed the safety threshold, etc. [0003] Model predictive control (Model Predictive Control, hereinaft...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 李升波成波麦尔旦江·买合木提李杰郜嘉鑫李文宇孙琪聂冰冰
Owner TSINGHUA UNIV