Title:
METHOD FOR ANALYZING GLOBAL STABILITY OF FLUID CONVEYING PIPE-NONLINEAR ENERGY SINK SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/011497
Kind Code:
A1
Abstract:
The present invention provides a method for analyzing the global stability of a fluid conveying pipe-nonlinear energy sink system, and belongs to the technical field of system stability proving and analyzing in a control system. In the method, a high-order partial differential model of the fluid conveying pipe-nonlinear energy sink system is established on the basis of a target energy transfer theory, is discretized into a second-order nonlinear ordinary differential form by using a Galerkin approximation method, and is further converted into a quadratic model containing gradient information for the first time; then, a global stability criterion of the system is obtained by means of an energy disturbance technology, and finally, the theoretical result is verified by using a numerical method. The present invention solves the theoretical proving problem of effectiveness of a nonlinear energy sink in the aspect of fluid conveying pipe vibration control for the first time, and gives a strict analysis process that the global stability thereof is exponential stability.
Inventors:
SUN XIMING (CN)
DUAN NAN (CN)
WU YUHU (CN)
ZHONG CHONGQUAN (CN)
DUAN NAN (CN)
WU YUHU (CN)
ZHONG CHONGQUAN (CN)
Application Number:
PCT/CN2020/101592
Publication Date:
January 20, 2022
Filing Date:
July 13, 2020
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
G06F30/20; G06F113/14
Foreign References:
| CN107169220A | 2017-09-15 | |||
| CN102799111A | 2012-11-28 | |||
| CN110633555A | 2019-12-31 | |||
| US8121708B1 | 2012-02-21 | |||
| US20060037822A1 | 2006-02-23 |
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