Network control system co-simulation method based on NS3 and MATLAB

A technology of networked control and collaborative simulation, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve problems such as inability to communicate with network simulation

Active Publication Date: 2019-11-15
ZHEJIANG UNIV OF TECH
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

MATLAB has accurate physical models and powerful functions, and supports matrix operations of complex algorithms, but even using the truetime software package still cannot achieve more accurate simulations for some communication networks

Method used

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  • Network control system co-simulation method based on NS3 and MATLAB
  • Network control system co-simulation method based on NS3 and MATLAB
  • Network control system co-simulation method based on NS3 and MATLAB

Examples

Experimental program
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Embodiment 1

[0110] In order to test the effectiveness of the co-simulation platform, we conduct a simulation test on the platform for the remote control system of the bridge crane. Since the overhead crane driving system (open loop) itself is unstable, from the perspective of regulatory control technology, some kind of regulatory control method can often be used, such as full-state feedback closed-loop negative regulatory control, so that the change of θ angle (relative to the steady The deviation of the state value) is controlled within a small range. Since the position sA of the trolley is a state variable of the controlled object that can be observed, the measured value of the position sA of the trolley can be used to set the full-state observer to reconstruct the system state, and cooperate with the full-state feedback to output the feedback to make the closed-loop of the control system stable. The feedback parameters of the state feedback device are determined by the Ackerman formula...

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Abstract

The invention discloses a network control system co-simulation method based on NS3 and MATLAB. The method comprises the following steps: designing an overall scheme of a networked control system co-simulation platform; determining a collaborative simulation platform composition module of the networked control system and determining a collaborative simulation platform data exchange and transmissionscheme; establishing running environments of two kinds of simulation software in a linux operating system; designing a time synchronization scheme of the networked control system collaborative simulation platform; wherein the collaborative simulation system is a simulation system with strict requirements for real-time performance and time sequence. Two simulators need to be synchronously propelled for execution. Three collaborative simulation time synchronization schemes are designed, two of the three collaborative simulation time synchronization schemes are selected to be realized, the design of a synchronous interaction model is improved, then, each module program of NS3 is designed, an NS3 simulation script is designed, and finally, each module program of MATLAB / Simulink is designed.

Description

technical field [0001] The invention relates to a method for co-simulating two different simulation software, NS3 and MATLAB, by designing a characteristic framework and a synchronization scheme. Background technique [0002] A networked control system (NCS) is a control system consisting of a system to be controlled and actuators, sensors, and controllers whose operations are coordinated through a communication network, so NCS contains a coupled control and communication perspective. NCS's use of a multipurpose shared network to connect spatially distributed elements results in a flexible architecture and often reduces installation and maintenance costs. As a result, NCS has found applications in a wide range of fields such as industrial control systems and unmanned aerial vehicles (UAVs). [0003] However, the existing simulation software is concentrated on the control system or communication network, and the simulation of NCS is also based on the redevelopment of a singl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02P90/02
Inventor 赵云波顾慧卿苏艺帆韩康
Owner ZHEJIANG UNIV OF TECH
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