A vibration control method for aqueduct structures under random loads
A control method and aqueduct technology, applied in the general control system, adaptive control, control/regulation system, etc., can solve the problems of random disturbance of output variables, affecting semi-automatic control system, etc., and achieve the effect of convenient operation and simple method
Active Publication Date: 2017-03-29
ZHENGZHOU UNIV +2
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[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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[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] Such as 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 structural semi-active control system motion equation under the consistent input of earthquake motion;
[0055] S102: introducing a state vector, and determining a motion equation of the...
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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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IPC IPC(8): G05B13/04
Inventor 黄亮张玉民武明静杜强赵香萍王博刘文俊李晓徐伟张威刘朋飞
Owner ZHENGZHOU UNIV