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Self-adaptive event triggering output feedback control method and system of time-delay switching system

A switching system and event-triggered technology, applied in the direction of adaptive control, comprehensive factory control, general control system, etc., can solve the problems of not using the average dwell time, waste of communication resources, etc., and achieve the goal of solving resource waste and saving communication resources Effect

Active Publication Date: 2021-07-13
SHANDONG NORMAL UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0004] The traditional time-driven control strategy is widely used in the control design process. Its characteristic is to continuously transmit the output of the actual controller to the system, but this leads to a waste of communication resources; Some research results have been achieved in adaptive control, but most research results did not use event-triggered control strategies, nor did they use the modified mode-dependent mean dwell time (MDADT) method

Method used

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  • Self-adaptive event triggering output feedback control method and system of time-delay switching system
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  • Self-adaptive event triggering output feedback control method and system of time-delay switching system

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Embodiment 1

[0039] Such as figure 1 As shown, the present embodiment provides an adaptive event trigger output feedback control method of a time-lag switching system, including the following steps:

[0040] (1) Determine the kinetic equation of the nonlinear system;

[0041] (2) Estimation of unknown system status variables according to the switching state observer, to convert the dynamics equation to the dynamics equation;

[0042] (3) The state error equation is lagged by Lyapunov-Krasovskii function compensation, defining the virtual control rate and adaptation rate by the anti-stepping method and intelligent approximation techniques, and the virtual controller is constructed;

[0043] (4) Design an event trigger controller to reduce communication resources;

[0044] (5) Under the event trigger mechanism, the virtual controller is controlled to control the time-delay switching system to switch when the signal of the signal of the time-hysteresis system is switched.

[0045] The implementat...

Embodiment 2

[0194] This embodiment provides an adaptive event trigger output feedback control system for a time-hysteresis switching system, including:

[0195] Dynamic modeling module, is configured to determine the kinetic equation of the time-delay switching system;

[0196] The status estimation module is configured to estimate unknown status variables based on the switching state observer to convert the dynamics equation to obtain a status error equation;

[0197] The controller build module is configured to lag when the status error equation is compensated by the Lyapunov-KraSovskii function, and the virtual controller is constructed by defining the virtual control rate and the adaptive rate;

[0198] The trigger module is configured to control the time-hysteresis switching system based on the virtual controller under the event trigger mechanism to switch when switching from the signal of the time-hysteresis switching system.

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Abstract

The invention discloses a self-adaptive event triggering output feedback control method and system of a time-delay switching system. The method comprises the following steps: determining a kinetic equation of the time-delay switching system; estimating an unknown state variable according to a switching state observer, and converting the kinetic equation to obtain a state error equation; carrying out Lyapunov-Krasovskii functional compensation on the state error equation to obtain time lag, and constructing a virtual controller by defining a virtual control rate and an adaptive rate; and under the event triggering mechanism, controlling the time-delay switching system based on the virtual controller, so that any MDADT in a signal of the time-delay switching system is bounded during switching. By fusing the event trigger control strategy and a backstepping control method, a self-adaptive event trigger controller is constructed, and the problem of resource waste caused by a traditional time-driven control method is solved; compared with other methods, the modal-dependent average residence time method is more suitable for practical application.

Description

Technical field [0001] The present invention relates to the technical field of switching systems, and more particularly to an adaptive event trigger output feedback control method and system for a time-hosted switching system. Background technique [0002] The statement of this section is merely the background technology information associated with the present invention, which is not necessarily constituted in prior art. [0003] The switching system is a mixed system consisting of a limited continuous or discrete time subsystem and a control subsystem in an active state. Many actual systems often include discrete events and continuous events, so use the switching system to model the actual system has a wide range of application prospects. [0004] Traditional time-drive control strategy is widely used in the control design process, which is characterized by keeping the output of the actual controller to the system, but this leads to waste of communication resources; in addition,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042Y02P90/02
Inventor 王振华孔杰程婷婷牛奔
Owner SHANDONG NORMAL UNIV
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