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Semi-active shock absorption controlling device and method for large aqueduct under longitudinal shock input

A technology of semi-active control and control device, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of high cost, complex structure, limited control effect and control application scope, etc.

Active Publication Date: 2014-09-03
ZHENGZHOU UNIV +2
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Problems solved by technology

[0004] The purpose of the embodiment of the present invention is to provide a large-scale aqueduct shock-absorbing semi-active control device and method under the input of longitudinal earthquake, aiming to solve the problems of the existing aqueduct control method, such as limited control effect and control scope, complex structure, costly problem

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  • Semi-active shock absorption controlling device and method for large aqueduct under longitudinal shock input
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  • Semi-active shock absorption controlling device and method for large aqueduct under longitudinal shock input

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Embodiment Construction

[0071] 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.

[0072] The application principle of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0073] Such as figure 1 As shown, the method for semi-active control of large-scale aqueduct shock absorption under the input of longitudinal earthquake vibration in the embodiment of the present invention includes the following steps:

[0074] S101: Using the magnetorheological damper as the control device, the magnetorheological fluid can realize the reversible change between free-flowing viscous fluid and semi-solid within milliseconds by controlling the magn...

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Abstract

The invention discloses a semi-active shock absorption controlling device and method for a large aqueduct under longitudinal shock input. The method comprises the steps that a magneto-rheological damper is used as a controller; a spencer model of the magneto-rheological damper is used to simulate shock absorption; an LQR / LQG control law is used to design active control, and the optimal state feedback gain is obtained in an LQR method; the magneto-rheological damper is combined with an aqueduct structure so that the semi-active control device achieves an optimal active control force approximately, and a semi-active control law is designed; the space dynamic force of the aqueduct structure is calculated in a beam segment finite element method; and in the process of tentative calculation of the optimal control force, the form and size of weight matrixes Q and R are continuously adjusted to obtain the active control force through which control effect and force are comprehensively optimal. The device comprises an aqueduct body, a support, a basin type rubber bearer, a lead-core rubber bearer, a dilatation joint, the magneto-rheological damper and a pier top. The method and structure are simple, the dynamic scope is wide, the endurance is high, and the damping force can be continuously adjusted.

Description

technical field [0001] The invention belongs to the technical field of damping control of aqueducts, and in particular relates to a semi-active control device and method for damping a large aqueduct under longitudinal ground vibration input. 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 my country and Northwest China. 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 a...

Claims

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Application Information

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IPC IPC(8): G05B13/04
Inventor 黄亮王博徐伟张威闵博
Owner ZHENGZHOU UNIV
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