Hardware in the Loop Simulation for Low-Altitude UAV Link in the Complex Terrain

2013 ◽  
Vol 336-338 ◽  
pp. 1907-1912
Author(s):  
Yi Zheng ◽  
Yu Wen Wang
Keyword(s):  
Real Time ◽  
Complex Terrain ◽  
Video Transmission ◽  
Physical Simulation ◽  
Path Loss ◽  
Video Stream ◽  
Communication Link ◽  
Hardware In The Loop ◽  
The Real ◽  
Irregular Terrain

In order to investigate the influence of complex terrain on the quality of the unmanned aerial vehicle (UAV) communication link and simulate it accurately, the HITL simulation platform of the UAV-ground link, which was based on EXata software and Hardware-in-the-loop (HITL) module, was built. In the virtual terrain scenarios, the Free-space loss model and the Irregular Terrain Model (ITM) were used to modeling and conduct the semi-physical simulation experiments, respectively. Then, a new method of the HITL simulation for the wireless communication link was put forward, which achieved the real-time video stream interaction with the virtual networks. The simulation results showed the real-time changes of path loss in the complex terrain and the specific affection on the UAV-ground link communication quality from numerical and video transmission effect. The method enhanced the accuracy and rationality of the UAV-ground link simulation.

scholarly journals Power Hardware-in-the-Loop: Response of Power Components in Real-Time Grid Simulation Environment

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 593
Author(s):  
Moiz Muhammad ◽  
Holger Behrends ◽  
Stefan Geißendörfer ◽  
Karsten von Maydell ◽  
Carsten Agert
Keyword(s):  
Real Time ◽  
Power Distribution ◽  
Control Strategies ◽  
Power Grid ◽  
Energy System ◽  
Hardware In The Loop ◽  
Distribution Grid ◽  
Compensation Strategy ◽  
Software Environment ◽  
The Real

With increasing changes in the contemporary energy system, it becomes essential to test the autonomous control strategies for distributed energy resources in a controlled environment to investigate power grid stability. Power hardware-in-the-loop (PHIL) concept is an efficient approach for such evaluations in which a virtually simulated power grid is interfaced to a real hardware device. This strongly coupled software-hardware system introduces obstacles that need attention for smooth operation of the laboratory setup to validate robust control algorithms for decentralized grids. This paper presents a novel methodology and its implementation to develop a test-bench for a real-time PHIL simulation of a typical power distribution grid to study the dynamic behavior of the real power components in connection with the simulated grid. The application of hybrid simulation in a single software environment is realized to model the power grid which obviates the need to simulate the complete grid with a lower discretized sample-time. As an outcome, an environment is established interconnecting the virtual model to the real-world devices. The inaccuracies linked to the power components are examined at length and consequently a suitable compensation strategy is devised to improve the performance of the hardware under test (HUT). Finally, the compensation strategy is also validated through a simulation scenario.

The System Design of Wireless Video Transmission Based on PTZ Control

2014 ◽  
Vol 1006-1007 ◽  
pp. 723-726
Author(s):  
Shi Yu Huan
Keyword(s):  
Real Time ◽  
Video Transmission ◽  
Local Area Network ◽  
High Reliability ◽  
Rapid Expansion ◽  
Area Network ◽  
Wireless Video ◽  
The Real ◽  
Wireless Video Transmission ◽  
Internet Of Things Technology

Along with the rapid expansion of automation, communication, the Internet of things technology, and video image processing technology, the wireless video transmission technology based on the embedded system is becoming increasingly more mature. In this paper, what has been designed and managed to be perfectly applied is a transmission system of high reliability and convenience which based on the technique of pan-tilt control and integrated the technology of wireless LAN, embedded technology, video transmission technology. The paper briefly introduces the research background of the system, current research status at home and abroad, the development trend and the significance of this design project. What is more is that the article goes through the hardware and software design of the pan-tilt control circuit and software of real-time video transmission in a detailed way. The biggest is that this project has made the real-time video transmission in the local area network came true and you can check the real-time dynamic video images by browsing the web through you mobile phone.

1P2-B07 Reflex Action against Input Shock in the High-Power Humanoid Provided with the Real-Time Communication Link "Responsive Link"

2015 ◽  
Vol 2015 (0) ◽  
pp. _1P2-B07_1-_1P2-B07_4
Author(s):  
Yuya NAGAMATSU ◽  
Takuma SHIRAI ◽  
Soichi OOKUBO ◽  
Iori KUMAGAI ◽  
Fumihito SUGAI ◽  
...  
Keyword(s):  
Real Time ◽  
High Power ◽  
Communication Link ◽  
The Real ◽  
Reflex Action

Remote Update on Flash-Based Hydrologic Remote Terminal through GPRS Technology

2013 ◽  
Vol 846-847 ◽  
pp. 1711-1715 ◽  
Author(s):  
Wen Jie Ji ◽  
Xiao Qiong Li ◽  
Jing Yang Chen
Keyword(s):  
Internet Of Things ◽  
Natural Disasters ◽  
Real Time ◽  
Complex Terrain ◽  
Warning System ◽  
The Internet ◽  
The Real ◽  
Remote Terminal ◽  
Safety And Reliability ◽  
The Internet Of Things

Mountain torrent is one of major natural disasters for humans. With the development of the Internet of things, the instrumented terminals, through which the host PC could obtain the real-time water and rainfall information and could alert to a coming disaster, have been widely applied to mountain torrent warning system. In order to ensure the effectiveness of network alerting, the program in the terminals need to be updated for some specific situations, but large quantities of terminals are usually built in complex terrain and fragmented geographically, so that it is difficult and expensive to update or repair the programs. In this paper, a method of remote update, realized on the BAM-4300 hydrologic remote terminal to update the complex programs via GPRS modules, was highly reliable. Experiments show that this method is of safety and reliability, and cumbersome processes of onsite update and maintenance could be avoided.

scholarly journals Hardware-in-the-Loop Operations With an Emulator Rig for SOFC Hybrid Systems

2017 ◽  
Author(s):  
Mario L. Ferrari ◽  
Alessandro Sorce ◽  
Aristide F. Massardo
Keyword(s):  
Fuel Cell ◽  
Real Time ◽  
Hybrid Systems ◽  
Control Strategies ◽  
Experimental Tests ◽  
Outlet Temperature ◽  
Hardware In The Loop ◽  
Set Point ◽  
The Real ◽  
System Components

This paper shows the Hardware-In-the-Loop (HIL) technique developed for the complete emulation of Solid Oxide Fuel Cell (SOFC) based hybrid systems. This approach is based on the coupling of an emulator test rig with a real-time software for components which are not included in the plant. The experimental facility is composed of a T100 microturbine (100 kW electrical power size) modified for the connection to an SOFC emulator device. This component is composed of both anodic and cathodic vessels including also the anodic recirculation system which is carried out with a single stage ejector, driven by an air flow in the primary duct. However, no real stack material was installed in the plant. For this reason, a real-time dynamic software was developed in the Matlab-Simulink environment including all the SOFC system components (the fuel cell stack with the calculation of the electrochemical aspects considering also the real losses, the reformer, and a cathodic recirculation based on a blower, etc.). This tool was coupled with the real system utilizing a User Datagram Protocol (UDP) data exchange approach (the model receives flow data from the plant at the inlet duct of the cathodic vessel, while it is able to operate on the turbine changing its set-point of electrical load or turbine outlet temperature). So, the software is operated to control plant properties to generate the effect of a real SOFC in the rig. In stand-alone mode the turbine load is changed with the objective of matching the measured Turbine Outlet Temperature (TOT) value with the calculated one by the model. In grid-connected mode the software/hardware matching is obtained through a direct manipulation of the TOT set-point. This approach was essential to analyze the matching issues between the SOFC and the micro gas turbine devoting several tests on critical operations, such as start-up, shutdown and load changes. Special attention was focused on tests carried out to solve the control system issues for the entire real hybrid plant emulated with this HIL approach. Hence, the innovative control strategies were developed and successfully tested considering both the Proportional Integral Derivative and advanced approaches. Thanks to the experimental tests carried out with this HIL system, a comparison between different control strategies was performed including a statistic analysis on the results The positive performance obtainable with a Model Predictive Control based technique was shown and discussed. So, the HIL system presented in this paper was essential to perform the experimental tests successfully (for real hybrid system development) without the risks of destroying the stack in case of failures. Mainly surge (especially during transient operations, such as load changes) and other critical conditions (e.g. carbon deposition, high pressure difference between the fuel cell sides, high thermal gradients in the stack, excessive thermal stress in the SOFC system components, etc.) have to be carefully avoided in complete plants.

Study on Hardware-in-the-Loop-Simulation of Hydroturbine Governing System

2010 ◽  
Vol 39 ◽  
pp. 395-398 ◽  
Author(s):  
Hai Hui Song ◽  
Yun Min Xie ◽  
Wei You Cai
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Hardware In The Loop ◽  
Real Time Simulation ◽  
Testing Platform ◽  
The Real ◽  
Governing System ◽  
Time Simulation

This paper introduces a testing mothod about hydroturbine governing system based on dSPACE hardware-in-the-loop-simulation. PID parameters are adjusted by hardware-in-the-loop -simulation. The results of the simulation show that it can provide simple, intuitive simulation model, and make parameters adjusting more intuitive and easier. The validity of the testing platform have been testified by the results of real-time simulation and hardware-in-the-loop-simulation. The superiority of controldesk in the real-time simulation is prominent.

scholarly journals Fast harmonic analysis for PHIL experiments with decentralized real-time controllers

2021 ◽  
Author(s):  
Erhan Sezgin ◽  
Anurag Mohapatra ◽  
Vedran S. Peric ◽  
Ozgül Salor ◽  
Thomas Hamacher
Keyword(s):  
Harmonic Analysis ◽  
Real Time ◽  
Communication Link ◽  
Hardware In The Loop ◽  
Voltage Measurement ◽  
Delay Compensation ◽  
Grid Synchronization ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Execution Rates

<i>The paper has been submitted to PSCC 2022 and is currently awaiting reviews.<br></i><br>This paper proposes and implements, a harmonic analysis algorithm for microgrid Power Hardware-in-the-loop (PHIL) experiments, when the point of common coupling (PCC) voltage cannot be directly wired to the local prosumer controllers due to long distances between them. Using frequency-shifting and filtering ideas, the voltage measurement is converted to magnitude and phase information. This is passed over an asynchronous communication link to another controller, where it is recovered into a waveform after delay compensation. The method allows for accurate power calculations and grid synchronization over distributed prosumer controllers. The proposed method can work at different execution rates depending on real time (RT) workload and is shown to be robust against step changes, harmonics and communication delays. The method is demonstrated with two PHIL experiments at the CoSES, TU Munich lab in grid connected and island mode.

Real-Time Modeling to Enable Hardware-in-the-Loop Simulation of Plug-In Electric Vehicle-Grid Interaction

2017 ◽  
Author(s):  
Chong Cao ◽  
Luting Wang ◽  
Bo Chen ◽  
Jason Harper ◽  
Theodore Bohn ◽  
...  
Keyword(s):  
Power System ◽  
Real Time ◽  
Electric Vehicle ◽  
Power Management ◽  
Hardware In The Loop ◽  
The Real ◽  
System Models ◽  
Management Algorithm ◽  
Time Modeling ◽  
Building Load

Real-Time simulation and Hardware-in-the-Loop (HIL) testing are increasingly adopted by industry for the development and validation of complex systems. This paper presents the real-time modeling and power management of a Vehicle-Grid Integration (VGI) system. The VGI system consists of six AC level 2 Plug-in Electric Vehicle (PEV) charging stations, a Photovoltaics (PV) farm, a commercial building load, and a switch connecting to 240V single phase power grid. PEV charging activities follow the SAE J1772 standard. An energy management algorithm is designed for the VGI system to coordinate the PEV charging with the building load and PV renewable generation. The coordination maintains the power consumption of the VGI system below utility’s demand charge pricing threshold. A real-time power system simulator, Opal-RT, is used in this study. The OPAL-RT system allows users to build detailed power system models using Matlab Simulink/SimPowerSystems and RT-LAB library, and run the models in real-time. The model-based approach enables the integration of power system models seamlessly with the power management algorithm and power electronics-level controllers. The simulation results show that the VGI model emulates the real system well and the coordinated PEV charging helps to balance the power generation and consumption of the VGI system to meet power management requirement.

scholarly journals Quadcopter Modeling and Control Using Controller Hardware-in-the-Loop

2021 ◽  
Author(s):  
LARA TAVARES DE OLIVEIRA ◽  
KAIQUE SILVEIRA VIANA COSTA ◽  
KENEDY MATIASSO PORTELLA ◽  
LUCAS VIZZOTTO BELLINASO ◽  
FERNANDA DE MORAIS CARNIELUTTI ◽  
...  
Keyword(s):  
Real Time ◽  
Experimental Results ◽  
Vehicle Stability ◽  
Hardware In The Loop ◽  
Reference Tracking ◽  
Modeling And Control ◽  
The Real ◽  
Adequate Control ◽  
Laboratory Setup ◽  
And Control

Quadcopters have many applications and an efficient controller is needed for reference tracking and to maintain vehicle stability. Quadcopter tests may require expensive laboratory setup to include certain conditions such as wind, with adequate control and monitoring. In this paper a bench markmodel of quadcopter is implemented in Hardware-In-the-Loop, in order to test the quadcopter controller considering different conditions of wind. For experimental results, an LQT controller has been implemented in a DSP, while the quadcopter was implemented in the real-time simulator Typhoon HIL.

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