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Networked system fault-tolerant control method based on dynamic event triggering mechanism

A technology of event triggering and control method, applied in the field of networked control, can solve the problems of reducing the number of network data transmissions, poor fault tolerance performance, etc., and achieve the effects of reducing release time, high utilization rate, and increasing fault tolerance

Inactive Publication Date: 2020-11-03
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0005] In order to overcome the shortcomings of existing networked control methods that cannot be applied to systems with uncertain parameters and poor fault-tolerant performance, the present invention introduces a dynamic event trigger mechanism, and proposes a networked system fault-tolerant control method with a parameter-uncertain dynamic event trigger mechanism , based on Lyapunlov's stability theory and linear matrix inequality technology, a design method of state feedback controller under dynamic event trigger mechanism is given. This method reduces the number of network data transmissions and can also enhance the fault tolerance of the system

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  • Networked system fault-tolerant control method based on dynamic event triggering mechanism
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  • Networked system fault-tolerant control method based on dynamic event triggering mechanism

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[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] refer to figure 1 and figure 2 , respectively introduced the inverted pendulum model and the representative values ​​of each parameter, and the networked system fault-tolerant control flow chart of the dynamic event trigger mechanism.

[0048] A networked system fault-tolerant control method based on a dynamic event trigger mechanism, comprising the following steps:

[0049]Step 1: Measure the mass of the trolley M = 1.096kg, the mass of the ball m = 0.196kg, the length of the pendulum L = 0.25m, obtain the state space model of the inverted pendulum, and obtain the corresponding parameter matrix C, BW; make and combine

[0050] Step 2: Considering the network delay, the general model of the inverted pendulum is transformed into a time-delay model with uncertain parameters, and the dynamic event trigger condition is transformed into a dynamic event trigger c...

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Abstract

The invention discloses a networked system fault-tolerant control method based on a dynamic event triggering mechanism. The invention relates to a networked system fault-tolerant control method basedon a dynamic event triggering mechanism, which comprises the following steps of: 1, modeling an inverted pendulum networked control problem into a state space model with parameter uncertainty by considering network delay; step 2, based on a Lyapunov stability theory and a linear matrix inequality technology, obtaining a sufficient condition that the system is asymptotically stable and meets a fault-tolerant performance index; and step 3, giving a design method of a state feedback controller under a dynamic event triggering mechanism. The invention provides a networked system fault-tolerant control method based on the dynamic event triggering mechanism, which can reduce the network data transmission times and enhance the system fault-tolerant performance.

Description

technical field [0001] The invention belongs to the field of networked control, and designs a method applied in networked control to reduce network load and energy consumption, reduce the number of times of data transmission, stabilize the system and enhance the fault-tolerant performance of the system. Background technique [0002] Nowadays, with the rapid development and wide application of network technology, the trend of control system to be networked, distributed, intelligent and comprehensive is becoming more and more obvious. In a networked control system, each unit of the system is connected through a public network, and signals are transmitted and exchanged through a communication network. The communication mode of information exchange through the network also brings new opportunities and challenges to the analysis and design of networked control systems, such as network delay, bandwidth limitation, signal quantization, disturbance, packet loss rate and other issues...

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Application Information

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IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 黄玲孙继超
Owner HARBIN UNIV OF SCI & TECH
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