A design method of event-triggered observer based on online asynchronous antecedent refactoring

An event-triggered and design method technology, applied in the field of robust filtering, can solve problems such as fuzzy observers, and achieve the effect of solving fuzzy observer design problems, overcoming limitations and defects, and solving fuzzy observer design difficulties.

Active Publication Date: 2022-04-01
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide an event-triggered observer design method based on online asynchronous antecedent reconstruction, to solve the design problem of event-triggered fuzzy observers, and to obtain ideal performance while saving network resources

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  • A design method of event-triggered observer based on online asynchronous antecedent refactoring
  • A design method of event-triggered observer based on online asynchronous antecedent refactoring
  • A design method of event-triggered observer based on online asynchronous antecedent refactoring

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] In this embodiment, the event-triggered observer design method based on online asynchronous antecedent reconstruction includes the following steps:

[0021] Step 1: For the actual complex nonlinear system, it is modeled as a continuous-time T-S fuzzy model in the local area, as follows:

[0022]

[0023] y(t)=Cx(t)

[0024]

[0025] where r is the number of inference rules, i represents the rule sequence, x(t), y(t) and z(t) represent the system state, measurement output and performance output, respectively, v(t) is the external disturbance, A i ,D i , C and E i is a constant matrix. Another membership function χ i (μ(y(t))) satisfies the relation: χ i (μ(y(t)))≥0,

[0026] Step 2: Establish an event-triggered communication mechanism and design an event-triggered fuzzy observer;

[0027] (1) The event-triggered communic...

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Abstract

The present invention provides a method for designing an event-triggered observer based on online asynchronous antecedent reconstruction, including: modeling the actual complex nonlinear system as a T-S fuzzy model, and selecting the system output as an antecedent variable; designing a new Fuzzy observer, in which the observer gain is switched at different triggering moments according to the designed online asynchronous premise reconstruction method; a non-continuous Lyapunov function is established to prove that the proposed observer can guarantee the stability and expected performance of the system . The invention provides a scheme for effectively dealing with the mismatch of antecedent variables caused by the introduction of the event trigger mechanism, thereby effectively solving the problem of difficult design of the fuzzy observer. The proposed method is simulated, and the results verify the effectiveness of the method of the present invention.

Description

technical field [0001] The invention relates to the field of robust filtering of networked fuzzy systems, in particular to an event-triggered observer design method based on online asynchronous antecedent reconstruction. Background technique [0002] It is well known that state variables in control systems are not always available. Therefore, the problem of state estimation and filtering of nonlinear systems has always been a research hotspot in the field of control. The existing robust filtering results can be divided into two categories. When the statistical test information of external disturbances is available, these statistical information can be used to design filters, such as the famous Kalman filter. When the statistical test information of the external disturbance is not available, the H infinite filter will be used in this scenario. Due to the ubiquitous characteristics of uncertainty, nonlinearity and strong coupling in practical systems, the problem of robust ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 王晓磊
Owner DALIAN UNIV OF TECH
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