Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Design method of LQG controller of LPV system based on data driving

A data-driven, design method technology, applied in adaptive control, general control system, control/regulation system, etc., can solve the problems of hysteresis, inconvenient calculation, large order of large-scale dynamic system, etc., to reduce the degree of interference, The effect of improving control accuracy

Active Publication Date: 2021-03-19
JIANGSU UNIV
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Large-scale dynamic systems often have a large order, which is extremely inconvenient to calculate, and serious hysteresis will appear in the case of low computing power

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
  • Design method of LQG controller of LPV system based on data driving
  • Design method of LQG controller of LPV system based on data driving
  • Design method of LQG controller of LPV system based on data driving

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing.

[0017] Such as figure 1 Shown, the design of controller of the present invention comprises as follows:

[0018] Step1: Establish system equations

[0019] For large dynamic systems with time-varying parameters, the following system equations are established:

[0020] x(t;q(t))=A(q(t)x(t;q(t))+Bu(t;q(t))+w(t)

[0021] y(t; q(t)) = Cx(t; q(t)) + v(t)

[0022] Among them, assuming all t>0, the system matrix A(q(t))∈R n×n By the time-varying parameter q(t)∈R d Determined, so as to obtain the time-varying system matrix, the input matrix B∈R n×n and the output matrix C ∈ R n×n are considered fixed. Control input u(t; q(t)) ∈ R m , the controlled output y(t; q(t))∈R p , and the state quantity x(t; q(t))∈R n Depending on the parameters, w(t), v(t) are the measurement noise and observation noise in the stochastic process, respectively. The present invention assumes that ...

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 discloses a design method for an LQG controller of an LPV system based on data driving. The method comprises steps of S1, building a system equation, carrying out the equal-time-intervalsampling of sensor inputs under different parameter conditions, carrying out the order reduction of the sensor inputs through a POD method, and obtaining an order reduction basis; S2, under the condition of different parameters, a system filtering algebra Riccati equation and a controller algebra Riccati equation being calculated respectively, and a filter gain and a controller gain being obtained; S3, a database being established, reduced-order bases of all prior parameters and the two gains obtained in the S2 being in one-to-one correspondence and stored in the database, the reduced-order bases serving as learning bases of a machine learning classifier, a proper machine learning model being selected, the learning bases in the database serving as a training set, the two corresponding gain parameters serving as labels, and the classifier model being designed; wherein the classifier model is the LQG controller. The controller can be used online in real time. According to the method, the stable reaction speed and control precision of the system are effectively improved, and the interference can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of large-scale linear dynamic system controller design, and in particular relates to the design of a reduced-order controller for a data-driven parameter time-varying switching system. Background technique [0002] Large-scale dynamic switching systems are often highly sensitive to certain control parameters. The performance of the control system largely depends on the response speed of the system to the sudden change of these parameters. In the case of ensuring the system sensitivity, the stability of the system is guaranteed. Therefore, for this type of linear parameter-varying system (LPV system), it is very important to select an appropriate control method to satisfy the controller that depends on specific time-varying switching parameters. Model-based feedback control provides an elegant and mathematically sound approach to controller design. Data-driven feedback gain control is a mathematically reasonable and h...

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
IPC IPC(8): G05B13/04G05B13/02
CPCG05B13/041G05B13/0265G05B13/027
Inventor 潘公宇丁聪张晓曼王功强
Owner JIANGSU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com