Finite time dissipation filtering method of nonlinear networked control system

A networked control, limited-time technology, applied in impedance networks, digital technology networks, electrical components, etc., can solve the problem that the system cannot maintain a long or even infinite operating cycle.

Pending Publication Date: 2020-04-17
SHANGHAI OCEAN UNIV
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Problems solved by technology

However, in actual engineering, it is impossible for the system to maintain a long or even infinite operating cycle, especially for systems with high requirements on transient performance, it is often necessary t

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  • Finite time dissipation filtering method of nonlinear networked control system
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  • Finite time dissipation filtering method of nonlinear networked control system

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Embodiment

[0215] Using the finite time dissipation filtering method of a networked system under multipath fading channel proposed by the present invention, the external disturbance d(k)∈l 2 [0, N], the filtering error system is random and bounded within a finite time and has a certain anti-interference ability. The specific implementation method is as follows:

[0216] Consider the networked system model model and the multipath fading channel measurement model. The specific model parameters are:

[0217]

[0218]

[0219] Assume that the probability of random parameter uncertainty in the system is And the uncertain parameter matrix is:

[0220] M a =[1 0.7] T N a =[0.09 0.1]

[0221] Assume that the order of the attenuation model in equation (2) is L=2. Mathematical expectation of attenuation coefficient They are 0.8991, 0.3174, 0.5 and the corresponding variances are Mw=0.8, d 2 (k) = 0.2e -0.3k sin(k).

[0222] Given a finite time parameter as c 1 = 1, c 2 =50, Γ=1, N=20, δ=1.6, R=diag{...

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Abstract

The invention discloses a finite time exponential dissipation filtering method of a nonlinear networked control system. The method gives consideration to the random parameter uncertainty and multipathfading channel measurement of a networked control system, and comprises the steps: establishing a filtering error system model through state augmentation according to an object model, a multipath fading channel model and a filter model; constructing a Lyapunov function, and obtaining an inequality sufficient condition which ensures that the finite time of the filtering error system is randomly bounded and has a specified index dissipation performance index by utilizing a finite time stability theory and a dissipativity theory. According to the method, the finite time dissipative filtering ofa networked control system under multipath fading channel measurement is considered, and the method has important practical significance; moreover, the H-infinity filtering can be included as a special situation of dissipative filtering, the conservative property of design is reduced, the flexibility is improved, and the engineering implementation difficulty is reduced.

Description

Technical field [0001] The invention relates to the technical field of networked control, in particular to a finite time dissipation filtering method of a nonlinear networked control system. Background technique [0002] Networked control system has the advantages of information resource sharing, low cost, flexible system design, easy expansion and maintenance, and has been widely used in various fields of the national economy. The wireless network control system based on wireless network technology can be applied to some special extreme or high-risk environments. In wireless communication, channel attenuation is widespread. Generally, the radio beam emitted by the communication ground station is relatively wide. Due to the influence of many factors such as ground features, landforms and sea conditions during its transmission, the signal received by the receiver is electromagnetic waves arriving through multiple paths such as refraction, reflection and direct radiation. Due to ...

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Application Information

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IPC IPC(8): H03H17/06
CPCH03H17/06
Inventor 韩华翔
Owner SHANGHAI OCEAN UNIV
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