Tracking controller design method for packet loss network control systems

A technology of network control system and tracking controller, applied in general control system, control/regulation system, adaptive control, etc., to achieve the effect of fixed structure, good tracking performance and simple form

CN109597306AInactive Publication Date: 2019-04-09UNIV OF JINAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-04-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a tracking controller design method for packet loss network control systems. According to the method, a discrete linear system model with observation is used for describing network control systems which have packet loss caused by equipment failure, network congestion, routing information error and the like; an augmented matrix method is used for establishing an augmented system model related to a reference trajectory; under a limited time domain, an optimum output feedback tracking controller design scheme related to both a state and the reference trajectory is put forward on the basis of a new maximum principle, a differential Riccati equation, a Calman filtering theory and a Lyapunov theory, and optimum estimation of the state is given; and in addition, under a limitless time domain, an optimum tracking controller design method capable of stabilizing systems is put forward according to the Lyapunov theory and an algebra Riccati equation. According to the method, a controller design method with an output feedback form is put forward, so that the stability of systems is ensured and favorable tracking performance is provided.
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Description

technical field

[0001] The invention relates to a tracking controller design method of a packet loss network control system, in particular to the design of an optimal output feedback tracking controller. For the packet loss network control system described by a discrete linear system with observed output, it uses the augmented system theory for model transformation, based on the new maximum value principle, Riccati equation, and then according to Lyapunov stability theory, Kalman filter In theory, the necessary and sufficient conditions for the existence of optimal tracking control are given in the case of finite time domain and infinite time domain respectively, and a design method of optimal output feedback tracking controller related to state and reference trajectory is proposed. It belongs to the technical field of automatic control. Background technique

[0002] Thanks to the rapid development of computer and communication technology, network applications develop rapid...

Examples

Embodiment Construction

[0094] The present invention will be further described below in conjunction with specific simulation examples. The design goal of the invention is to design an output feedback tracking controller, which can ensure the stability of the system and have good tracking performance. In the specific implementation process, it is realized with the help of the simulation tool Matlab.

[0095] The first step is to set the system parameters

[0096]

[0097] The initial state is . The existence of multiplicative noise will destroy the stability of the system, so the multiplicative noise is set to zero here.

[0098] The second step is to solve the controller gain and design the output feedback tracking controller according to the recursive algorithm

[0099] The third step is system stability and tracking performance inspection

[0100] This step will test whether the system stability and tracking meet the design requirements, and realize it with the help of Matlab drawing tool....