Shock absorption control method of aqueduct structure under action of random loads

A control method and aqueduct technology, applied in general control systems, adaptive control, control/regulation systems, etc., can solve problems affecting semi-automatic control systems, random disturbances of output variables, etc.

Active Publication Date: 2014-07-16
ZHENGZHOU UNIV +2
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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a method for damping control of an aqueduct structure under random loads, aiming to solve the problem that there is random disturbance in the output variable that affects the semi-automatic control system

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  • Shock absorption control method of aqueduct structure under action of random loads
  • Shock absorption control method of aqueduct structure under action of random loads
  • Shock absorption control method of aqueduct structure under action of random loads

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[0051] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0052] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0053] like figure 1 As shown, the damping control method of the aqueduct structure of the embodiment of the present invention under the action of random load comprises the following steps:

[0054] S101: Add r controllers to the structure with n degrees of freedom, then the motion equation of the semi-active control system of the structure under the consistent input of earthquake motion;

[0055] S102: introducing a state vector, and determining a motion equat...

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Abstract

The invention discloses a shock absorption control method of an aqueduct structure under the action of random loads. The method includes the steps that r controllers are added onto an n-freedom-degree structure, and a semi-active control system motion equation of the structure under input of random loads is established; a virtual stimulation method is adopted for simulating the random loads to introduce a state vector, and a state equation of the structure is determined; a performance objective function of a system is defined, a minimum value of the performance objective function is used, and feedback gain can be obtained; semi-active control is performed on virtual response through a magnetorheological damper, and therefore random shock of the aqueduct structure can be effectively controlled. According to the method, the semi-active control method is adopted for calculating the aqueduct structure under the action of the random loads, and random features of actual stimulation are represented with the virtual stimulation method; the method is simple and convenient to operate and solves the problem that the semi-automatic control system is influenced because output variables are disturbed randomly.

Description

technical field [0001] The invention belongs to the technical field of active control of aqueducts in water conservancy projects, and in particular relates to a shock-absorbing control method for aqueduct structures under random loads. Background technique [0002] At present, the South-to-North Water Diversion Water Conservancy Project is a large-scale water conservancy project built to alleviate the current situation of water shortage in North China and Northwest my country. However, the water transmission line of the middle line project passes through areas with high seismic intensity in my country, and the seismic fortification intensity of many sections of the line reaches 8 degrees. There are 49 aqueducts in the main water transmission channel of the entire project, with a cumulative length of 5520m and a flow rate of 500m 3 / s, once an earthquake occurs, the entire line of water delivery will be interrupted, and it is close to Beijing-Guangzhou, Beijing-Kowloon and oth...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
Inventor 黄亮王博徐伟张威刘朋飞
Owner ZHENGZHOU UNIV
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