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Finite time remote security state estimation method for time delay uncertainty system

A state estimation, finite-time technique for general control systems, control/regulation systems, instruments, etc.

Active Publication Date: 2021-01-26
NANJING INST OF TECH
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Therefore, the asymptotically stable control objective has great limitations in the application of practical systems

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  • Finite time remote security state estimation method for time delay uncertainty system
  • Finite time remote security state estimation method for time delay uncertainty system
  • Finite time remote security state estimation method for time delay uncertainty system

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Embodiment Construction

[0083] The present invention will be further described below in conjunction with the accompanying drawings.

[0084] The invention discloses a finite-time remote security state estimation method for a time-delay uncertain system, aiming to solve the finite-time state estimation and robust security control problems of a system with time delay and model uncertainty under the background of remote data transmission, such as figure 1 and figure 2 shown, including the following steps:

[0085] Step 1: Establish a state-space model of the controlled system with time delay, nonlinear dynamics, model uncertainty and unknown external disturbances, where the model with time delay, nonlinear dynamics, model The state-space model of the controlled system with uncertain and unknown external disturbances has the following form:

[0086]

[0087] Among them, N+1 is the length of a given time interval, that is, the number of moments counted from time 0; τ k Denotes the time delay of the...

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Abstract

The invention discloses a finite time remote security state estimation method for a time delay uncertainty system. The method comprises the steps of establishing a controlled system state space model;establishing a state estimator system model and a computing center, and carrying out a state estimation task; establishing an extended state estimation model of the extended state estimation system;providing existence conditions of the finite time remote safety state estimator through an energy function in combination with a bounded judgment auxiliary equation; and designing a state estimator algorithm through the steps of giving system parameters, initializing parameters, solving an inequality group, modifying the initializing parameters and the like, generating a remote security state estimation strategy, and achieving finite time remote safety state estimation of the time delay uncertainty system. According to the invention, the robust finite time security state estimation of the timedelay uncertainty system based on the remote transmission data can be ensured, and the timeliness and reliability of the state estimation under the remote data transmission mode with the network attack are realized.

Description

technical field [0001] The invention belongs to the control field of systems with time delay and uncertain models, and in particular relates to a method for finite-time remote safety state estimation of time delay uncertain systems. Background technique [0002] System state is an important parameter to understand the internal dynamics of the system and realize key control tasks (such as positioning, tracking, and synchronization). However, under the limitation of objective conditions such as measurement technology or cost input, it is not easy to directly obtain the state of the controlled system. Therefore, how to effectively estimate the unknown system state has always been a hot issue in the field of control. [0003] In the process of state estimation, the main challenges come from two aspects: on the one hand, the accuracy of the controlled system model, in the actual system, the nonlinearity of electronic components, the hysteresis of signal transmission, and the ext...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 陈海洋
Owner NANJING INST OF TECH
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