IMC method of time-varying network time delay of two-input two-output networked decoupling control system

An input-output, decoupling control technology, applied in general control systems, control/regulation systems, adaptive control, etc., can solve the problems of unrealistic clock signal synchronization, complex internal structure, and many uncertain factors.
CN106919042AInactive Publication Date: 2017-07-04HAINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HAINAN UNIVERSITY
Publication Date
2017-07-04
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses an IMC method of time-varying network time delay of a two-input two-output networked decoupling control system, and belongs to the technical field of MIMO-NDCS with limited bandwidth resources. For a TITO-NDCS which has two-input and two-output signals which impact one another and are coupled, and often requires decoupling if the two-input and two-output signals are coupled, since network time delay which occurs in the transmission of network data among nodes not only impacts the stability of respective closed-loop control circuit and also impacts the stability of the entire system and even causes instability of the TITO-NDCS, the method herein proposes to replace an inter-network time delay compensating model with network data transmission among all real nodes in the TITO-NDCS and conduct IMC on two circuits. Therefore, the method can prevent measurement, estimation or discrimination of network time delay among the nodes, lowers the requirements for clock signal synchronization, reduces the impact on the stability of the TITO-NDCS by uncertain network time delay, and improves control properties and quality of the system.
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Description

Technical field

[0001] The IMC (Internal Model Control, IMC) method for the time-varying network delay of the two-input-output network decoupling control system involves the intersection of automatic control, network communication and computer technology, especially the decoupling of multiple-input and multiple-output networks with limited bandwidth resources Control system technology field. Background technique

[0002] In a distributed control system, a closed-loop feedback control system formed by a real-time communication network between sensors and controllers, controllers and actuators is called Networked Control Systems (NCS). The typical structure of NCS is figure 1 Shown.

[0003] Compared with the traditional point-to-point structure control system, NCS has the advantages of low cost, easy information sharing, easy expansion and maintenance, and great flexibility. In recent years, it has been widely used in process automation, manufacturing automation, aerospace, and wire...

Claims

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