Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Two-freedom degree IMC TITO-NDCS network time delay compensation method

A TITO-NDCS and network delay technology, applied in the field of multi-input and multi-output network control systems, can solve the problems of complex influence, many uncertain factors, and difficulty in control system analysis and design, so as to reduce the influence and improve the dynamic performance quality effect

Inactive Publication Date: 2017-06-09
HAINAN UNIVERSITY
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (2) The internal structure is much more complex than SISO-NCS and MIMO-NCS
[0011] (3) There may be uncertain factors in the accused
[0012] In MIMO-NDCS, there are many parameters involved, and there are many connections between control loops, and the influence of parameter changes on the overall control effect will become very complicated.
[0013] (4) Failure of control components
Time delay leads to system performance degradation and even system instability, and also brings difficulties to the analysis and design of the control system
[0019] (3) It is unrealistic to fully synchronize the clock signals of all nodes in different distribution locations in MIMO-NDCS
[0020] (4) Since in MIMO-NCS, the input and output influence each other and there is a coupling effect, the internal structure of MIMO-NDCS is more complicated than that of MIMO-NCS and SISO-NCS, and there may be more uncertain factors. Implementing delay compensation and control for MIMO-NDCS is much more difficult than MIMO-NCS and SISO-NCS

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-freedom degree IMC TITO-NDCS network time delay compensation method
  • Two-freedom degree IMC TITO-NDCS network time delay compensation method
  • Two-freedom degree IMC TITO-NDCS network time delay compensation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0138] The following will be attached by reference Figure 5 The exemplary embodiments of the present invention are described in detail to make the above-mentioned features and advantages of the present invention more clear to those skilled in the art.

[0139] The specific implementation steps are as follows:

[0140] For closed loop control loop 1:

[0141] Step 1: The sensor S1 node works in time-driven mode, when the sensor S1 node is cycled to h 1 After the sampling signal is triggered, the controlled object G 11 (s) output signal y 11 (s) Cross channel transfer function G with the controlled object 12 (s) output signal y 12 (s), and the output signal y of the decoupling actuator DA1 node 11mb (s) Sampling and calculating the system output signal y of the closed-loop control loop 1 1 (s) and feedback signal y 1b (s), and y 1 (s)=y 11 (s)+y 12 (s) and y 1b (s)=y 1 (s)-y 11mb (s);

[0142] Step 2: Sensor S1 node will feedback signal y 1b (s), transmit to the controller C node thro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a two-freedom degree IMC TITO-NDCS network time delay compensation method, and belongs to the MIMO-NDCS technology field having limited bandwidth resources. By aiming at influences and coupling between two-input and two-output signals, decoupling processing of TITO-NDCS is required, and because of the network time delay generated by transmission of network data among nodes, stabilities of various closed-loop control circuits are affected, and stability of a whole system is affected, and then the problem of the loss of the stability of the TITO-NDCS can be even caused. The method of using the process of the network data transmission among all of the actual nodes of the TITO-NDCS to replace a network time delay compensation model is provided, and two-freedom degree IMC is carried out on the two circuits, and therefore the measurement, the estimation, or the identification of the network time delay among the nodes are eliminated, a requirement on synchronization of node clock signals is lowered, the influences of the network time delay on the stability of the TITO-NDCS are reduced, and system control performance quality is improved.

Description

Technical field [0001] A two-degree-of-freedom IMC (Internal Model Control, IMC) TITO (Two-input and two-output, TITO)-NDCS (Networked decoupling control systems, NDCS) network delay compensation method, involving automatic control technology, network The cross field of communication technology and computer technology, especially related to the technical field of multiple-input multiple-output network control systems with limited bandwidth resources. 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 as figure 1 Shown. [0003] Compared with the traditional point-to-point structure control system, NCS can realize resource sharing, remote operation and control, extremely high diagnostic capability, easy installation and maintenance, and many advantages such a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 杜锋
Owner HAINAN UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com