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

Deviation separation-based state feedback linear control method

A linear control and state feedback technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as bounded uncertainties, complex control structures and algorithms, etc. Engineering Significant Effects

Inactive Publication Date: 2017-05-31
GUANGDONG POLYTECHNIC NORMAL UNIV
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such methods often assume that the uncertainty is bounded, and the resulting control structures and algorithms are quite complex

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
  • Deviation separation-based state feedback linear control method
  • Deviation separation-based state feedback linear control method
  • Deviation separation-based state feedback linear control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0026] refer to figure 1 , the present invention is based on the state feedback linear control method of deviation separation, which mainly proceeds according to the following steps:

[0027] First, consider an uncertain nonlinear system:

[0028]

[0029] where x(t)∈R n ,u(t)∈R m (m≤n) and w(t)∈R p are the state variable, control input and external disturbance of the system respectively; assuming that x=0 is the equilibrium point of system (1), in actual engineering design, system (1) can be divided into two parts near x=0: using linear differential The main part of the equation description and the model deviation part, that is, the system (1) is rewritten as

[0030]

[0031] where A∈R n×n ,B∈R n×m is a known constant matrix, D(x,u,w)∈R n is the model deviation, which includes ...

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 deviation separation-based state feedback linear control method. The method is characterized by comprising the following steps: firstly, considering an uncertain non-linear system: the formula is as shown in description; secondly, providing a linear control structure: u(t) is equal to u0(t) + ue(t); and finally designing a controller. The deviation information of a controlled object model is acquired on line through a construction observer, so that a simple linear control structure is designed to compensate the influence of uncertainty and non-linearity. Compared with the traditional control method, the deviation separation-based state feedback linear control method has the advantages that a control system design method is provided, a simple control structure and an algorithm can be designed simply, the influence of uncertainty and non-linearity can be reduced, even counteracted, the requirements on rapidness, implementability and high reliability can be met, and great engineering significance is achieved.

Description

technical field [0001] The invention relates to a control system design method in the field of automation control, in particular to a state feedback linear control method based on deviation separation. Background technique [0002] In engineering practice, uncertainty and nonlinearity generally exist in the controlled system. In order to solve the influence of uncertainty and nonlinearity on the controlled system, there are two main types of control methods commonly used: the first type of method is the robust control method, which uses the information of the uncertainty bound to participate in the controller design. However, due to the fact that the information of the uncertainty bound is difficult to obtain accurately in engineering practice, the system design often uses the "worst case" to estimate the bound, which leads to the conservativeness of the robust control method. Another large category of methods is various adaptive control methods, which correct the parameter...

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 Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 陈贞丰岑健王中生
Owner GUANGDONG POLYTECHNIC NORMAL UNIV