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A method for establishing an adjustable bifurcation point controller based on an integer order network congestion model

A network congestion and establishment method technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problems of computer network congestion, computer network resource capacity can not meet Internet users, etc., to achieve simple and powerful design method Applicability, the effect of good dynamic characteristics

Active Publication Date: 2019-01-04
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the resource capacity of the computer network cannot meet the needs of Internet users, and the phenomenon of computer network congestion is becoming more and more serious

Method used

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  • A method for establishing an adjustable bifurcation point controller based on an integer order network congestion model
  • A method for establishing an adjustable bifurcation point controller based on an integer order network congestion model
  • A method for establishing an adjustable bifurcation point controller based on an integer order network congestion model

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Embodiment Construction

[0057] specific implementation

[0058] Embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0059] Such as figure 1 As shown, the present invention is based on the establishment method of the controller of the adjustable bifurcation point of integer order network congestion model, specifically comprises the following steps:

[0060] Step 1: Analyze the stability characteristics and equilibrium point information of the original model.

[0061] The one-dimensional network congestion model with time delay is as follows:

[0062]

[0063] Among them, x(t) is the total influence amount at time t; τ is the system AC time delay (τ≥0); k is the system gain parameter (k>0), and c is the capacity of the system (c>0). From the above parameters, it is easy to get the unique equilibrium point of the model as

[0064] Step 2: Apply the adjustable bifurcation point to the integer order network congestion model controller fo...

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Abstract

The invention relates to a method for establishing an adjustable bifurcation point controller based on an integer order network congestion model, which comprises the following steps: analyzing the stability characteristics of an uncontrolled integer order network congestion model and a unique equilibrium point x*; applying a PD<1 / n> controller with adjustable bifurcation points to the uncontrolledinteger-order network congestion model, wherein at least the stability, Hopf bifurcation and periodic oscillation range of the researched system are satisfied; linearizing the network congestion model with fractional order controllerat the equilibrium point x*, and the characteristic equation of the linearized controlled system is obtained; selecting the time delay taoas the bifurcation parameter, and carrying out the stability analysis and bifurcation analysis through the characteristic equation of the controlled network after linearization in the aforementioned steps. By setting appropriatecontroller parameters, the occurrence time of Hopf bifurcation is effectively advanced or delayed, so that the congestion system becomes controllable and the ideal behavior is realized.

Description

technical field [0001] The invention relates to a method for establishing a controller, in particular to a controller with an adjustable bifurcation point based on an integer-order network congestion model The establishment method belongs to the technical field of controllers. Background technique [0002] With the rapid development of the Internet of Things and mobile networks, people can obtain various high-speed Internet services, and information communication has become convenient and fast. As a result, the number of Internet users is constantly increasing. However, the resource capacity of the computer network cannot meet the needs of Internet users, and the phenomenon of computer network congestion is becoming more and more serious. Therefore, in response to these problems, great achievements have been made in the research of congestion control systems. Especially the dynamics of the model, including stability, Hopf bifurcation, chaos and periodic oscillation, etc....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/801
CPCH04L41/145H04L47/10
Inventor 肖敏卢丘陶斌斌
Owner NANJING UNIV OF POSTS & TELECOMM
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