Time delay second-degree-of-freedom IMC method for two-input and two-output networked decoupling control system

A network control system, dual-input and dual-output technology, applied in the general control system, control/regulation system, adaptive control, etc., can solve the problems of many uncertain factors, complex influence, system performance degradation, etc., to improve the dynamic Performance quality, impact reduction effects
CN106919047AInactive Publication Date: 2017-07-04HAINAN UNIVERSITY
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Patent Information

Authority / Receiving Office
CN ยท 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 a time delay second-degree-of-freedom IMC method for two-input and two-output networked decoupling control system, and relates to the technical field of multiple-input and multiple-output networked decoupling control system. For a TITO-NDCS which has two-input and two-output signals which impact one another, 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 another closed-loop control circuit 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 applies dynamic feedforward and IMC on two circuits. Therefore, the method can prevent measurement, estimation or discrimination of network time delay among the nodes, lowers the requirements for node 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] A time-delay two-degree-of-freedom IMC (Internal Model Control, IMC) method for a dual-input and dual-output network control system, which involves the interdisciplinary fields of automatic control, network communication and computer technology, and especially involves multiple-input and multiple-output network control with limited bandwidth resources systems technology field. Background technique

[0002] With the development of network communication, computer and control technology, and the increasingly large-scale, wide-area, complex and networked development of production process control, more and more network technologies are applied to control systems. Networked control systems (NCS) refer to network-based real-time closed-loop feedback control systems. The typical structure of NCS is as follows: figure 1 shown.

[0003] NCS can realize complex large systems and remote control, node resource sharing, and increase system flexibility and reliabil...

Claims

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