Design method for sensitive restraint layer damping plate structural modal state observer

A state observer and structural modal technology, applied in design optimization/simulation, CAD circuit design, instruments, etc., can solve problems such as difficult and impossible measurement of intermediate variables of state variables

Inactive Publication Date: 2016-09-21
CHONGQING UNIV
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Problems solved by technology

However, in the actual vibration measurement, the sensor can only measure signals such as displacement, velocity or acceleration,

Method used

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  • Design method for sensitive restraint layer damping plate structural modal state observer
  • Design method for sensitive restraint layer damping plate structural modal state observer
  • Design method for sensitive restraint layer damping plate structural modal state observer

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Embodiment Construction

[0089] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0090] figure 1 The flow chart of the modal control of the smart constrained damper plate structure provided by the present invention, figure 2 It is a schematic diagram of the basic mechanism of the state observer, such as figure 2 :

[0091]

[0092] In the formula, u(t) is the input, y is the output, is the state observation quantity, is the output observation, is the differential of state observations, A is the system matrix, B is the input matrix, and K is the feedback gain matrix.

[0093] like figure 1 Shown, the method provided by the invention comprises the following steps:

[0094] S1: Establish the structural dynamics model of the smart constrained layer damping plate structure:

[0095] The basic equations of dynamics of smart constrained damped plate structural system:

[0096]

[0097] In the formula, M, D,...

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Abstract

The invention relates to a design method for sensitive restraint layer damping plate structural modal state observer, and belongs to the technical field of modal control. The design method includes the following steps: S1, establishing a structural dynamical model of a sensitive restraint layer damping plate structure; S2, writing out a state equation of a system, and performing combination and dimensionality reduction on a physical space and a state space; S3, achieving mapping from a complex number space to a real number space to obtain a lower dimension real modal control model; S4, selecting a main control mode of a research object through the modal rate of contribution; S5, determining the structure of the sensitive restraint layer damping plate structural modal state observer; and S6, solving a feedback gain matrix of the sensitive restraint layer damping plate structural modal state observer through a pole assignment method. The method can be applied to design of the sensitive restraint layer damping plate structural vibration modal state observer, can observe modal state variation of the sensitive restraint layer damping plate structure during vibration, is simple in principle, is easy to implement, and has high application value.

Description

technical field [0001] The invention belongs to the technical field of modal control, and relates to a design method for a modal state observer of a smart constraint layer damping plate structure. Background technique [0002] Mode control is widely used in vibration control. Since a small number of low-order principal modes in the actual vibration of flexible structures often play a major role in the performance of the entire system, in order to achieve modal control, sensors are required to measure all state variables to achieve state feedback. However, in the actual vibration measurement, the sensor can only measure signals such as displacement, velocity or acceleration, and the state variable is difficult to measure as an intermediate variable or cannot be measured at all in engineering practice. Contents of the invention [0003] In view of this, in order to overcome the above-mentioned defects of the prior art, the object of the present invention is to provide a des...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/23G06F30/30G06F30/367
Inventor 王攀鲁俊罗渊孔德飞李政
Owner CHONGQING UNIV
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