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AIAA SciTech Forum

作者： Diaz, Amber New Mexico State Univ Dept Aerosp & Mech Engn Las Cruces NM 88003 USA

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

Today Earth's orbit is becoming more crowded with satellites and space debris. However, two commercial satellites were successfully docked by Northrup Grumman in 2020. With successful satellite docking, it is possible to remove debris within Earth's orbit and increase the lifetime of functioning satellites by sending satellites that are no longer functional beyond Earth's orbit. The goal of this project is to create a software platform to test the control algorithms in the NanoSat Laboratory and develop means for ground testing. By modeling space vehicles and space environment to simulate proximity operations using MATLAB. Next, small spacecraft simulator parts will be designed for ground testing, using 3D printing technology and hardware-in-the-loop simulations. This project can potentially be extended to other applications on multiple Unmanned Aerial Vehicles such as assembling parts at a high altitude, as well as creating a starting point for a spinoff company to produce software simulation tools for broad space engineering and industrial applications.

关键词： In Space Vehicles Satellites Earth Unmanned Aerial Vehicle hardware in the loop simulation Industrial Applications Control Algorithm Space Environment Space Debris 3D Printing

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Real- Time HIL simulation of Modular Multilevel Matrix Converter Using Switching Function Model

Real- Time HIL Simulation of Modular Multilevel Matrix Conve...

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IEEE-Power-and-Energy-Society General Meeting (PESGM)

作者： Alvarez, Juan Paez Hoseinizadch, S. Milad Bonala, Anil Kumar Sahoo, Saroj Li, Wei OPAL RT Technol Montreal PQ Canada OPAL RT Technol India Bangalore Karnataka India

ISBN: (纸本)9798350381849;9798350381832

The modular multilevel matrix converter (M3C) represents a direct AC/AC converter configuration with significant potential for high-power applications in the medium voltage range. Given the increased number of sub-modules and the control complexity, HIL testing is recommended to validate the operation of the converter and its control before deployment in the field. Additionally, the real-time simulation of such topology remains challenging because of the increased number of converter valves compared to a classical MMC. This paper presents a modeling approach based on an equivalent circuit method both efficient and precise, and designed for real-time simulation of the M3C. The proposed method can be used for HIL testing or accelerated simulation.

关键词： Modular Multilevel Converter Matrix Converter hardware in the loop simulation Real Time simulation Medium Voltage AC drives

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Functional Monitor Models and Detection Methods for Sensor Data Variance of a Real-Time Cyber-Physical System

Functional Monitor Models and Detection Methods for Sensor D...

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AIAA SciTech Forum

作者： Gelber, Matthew Wyatt, Alex Al Habbal, Ammar Klenk, Robert H. Virginia Commonwealth Univ Dept Elect & Comp Engn Richmond VA 23284 USA

ISBN: (数字)9781624107115

ISBN: (纸本)9781624107115

As Cyber-Physical Systems (CPS) become more integrated into everyday life, the security of these systems must also be considered during their development due to their ever increasing importance. With the increase of physical components in the system, more autonomous control requirements, and increased dependence on proper functionality, verifying system safety and correct operation becomes increasingly difficult. CPS have become more complex through the combination of additional hardware and more interconnected software resulting in many different layers, each one requiring individual security solutions. One example of such a safety-critical CPS embedded system is the Flight Control System (FCS) of an Unmanned Aerial System (UAS). An FCS consists of many complex sensors that provide aircraft state information to a central processor, the autopilot, which executes the programmed flight control firmware. Developers of an FCS are dependent on a varying supply chain for the sensors and processors in use, and the trusted delivery of their verified firmware updates to the end user cannot always be guaranteed. Over time, sensor data can become less reliable as sensors can deteriorate resulting in eventual failure. These factors lead to system vulnerabilities from various types of cyber-attacks and physical faults of the sensors on a UAS. Statistical techniques are analyzed for their effectiveness in detecting when specified sensor values begin to exhibit a variance from other trusted sources. A real-time functional run-time assurance architecture and associated detection techniques has been developed to detect such cyber-attacks and sensor data faults in a UAS FCS. The results are demonstrated using an FPGA-based hardware-in-the-loop simulation testbed for simulating attacks and the attack detection algorithms to provide the user with information regarding these sensor attacks.

关键词： Barometric Pressure Sensor Cyber Physical System Flight Control System Autopilot hardware in the loop simulation Unmanned Aerial Systems Airspeed Control Algorithm Ground Control Station Control Charts

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Disturbances Quantification for Air-Bearing Spacecraft Attitude simulation Platforms

Disturbances Quantification for Air-Bearing Spacecraft Attit...

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AIAA SciTech Forum

作者： Di Domenico, Gianfranco Topputo, Francesco Politecn Milan Dept Aerosp Engn & Res I-20156 Milan Italy

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Ground Robotic Platform for simulation of On-Orbit Servicing Missions

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JOURNAL OF AEROSPACE INFORMATION SYSTEMS 2022年第7期19卷 480-493页

作者： Chhabra, Anirudh Kim, Donghoon Univ Cincinnati Dept Aerosp Engn & Engn Mech Cincinnati OH 45221 USA

Autonomous on-orbit servicing missions require high precision because any unwanted contact forces can cause damage to space systems. This makes the on-ground hardware-in-the-loop simulations necessary as operations must be thoroughly evaluated before such missions are carried out in space. A robotic platform is proposed, where a 3-degree-of-freedom (3-DOF) robotic arm is placed atop a 6-DOF Stewart platform. A mathematical model is developed for the resulting 9-DOF redundant manipulator, and the corresponding dynamics are modeled and verified. simulation studies are conducted using a constrained and singularity-robust pseudo-inverse control scheme, and the system's capability to follow a scaled-down orbital trajectory is tested. The results are presented, and the future implications of this study are discussed.

关键词： Parallel Manipulator Inverse Kinematics Mathematical Models Space Systems hardware in the loop simulation Robots Interstellar Boundary Explorer Space Operations Earth Spacecraft Motion

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Event-Triggered Antidisturbance Control Design for Aeroengine Systems via Switched Models

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AIAA JOURNAL 2022年第9期60卷 5448-5461页

作者： Zhao, Ying Gao, Yu-Xuan Pan, Zhuo-Rui Sun, Xi-Ming Dalian Maritime Univ Coll Marine Elect Engn Dalian 116026 Peoples R China Dalian Univ Technol Key Lab Intelligent Control & Optimizat Ind Equipm Minist Educ Dalian 116024 Peoples R China

In this paper, an event-triggered antidisturbance (ETAD) control scheme is presented for a category of aeroengine control systems (AECSs) involved in multiple disturbances. First, an AECS in this category is described by a switched model at a series of steady-state points. Then, a dynamic event-triggered mechanism is introduced by constructing the ET condition based on the control input directly, saving the signal transmission resource from the controller to the AECS. Next, a switching law with sampling is developed, economizing the signal transmission resource from the switching law to the AECS. Furthermore, based on the ET mechanism and switching law, an antidisturbance controller is designed to compensate for or suppress the influence of the multiple disturbances on the AECS. Also, under the ETAD control approach, relative theoretical conditions are established to save the signal transmission resource and to suppress or compensate multiple disturbances. Finally, using a hardware-in-loop platform with a switched aeroengine model inserted, a simulation is implemented to validate how the established ETAD control strategy is effectively applied to the AECS.

关键词： Aeroengine Control Systems Turbofan Engines Discrete Control Pulse Width Modulation Mathematical Models Fuel Consumption hardware in the loop simulation Digital Signal Processing Mathematical Analysis

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Autonomous Operation of a Mixed-Source Microgrid as a Remote Field-Oriented Drive

Autonomous Operation of a Mixed-Source Microgrid as a Remote...

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IEEE-Power-and-Energy-Society Innovative Smart Grid Technologies Conference (ISGT)

作者： Little, Maxwell L. Lehn, Peter W.

ISBN: (纸本)9781665453554

This paper proposes a new algorithm to autonomously operate a mixed-source microgrid - the remote field-oriented synchronous drive. GPS-based global synchronization signals allow a central controller with low-bandwidth communications to act as a synchronous drive by delivering field-oriented current references to converters. It is shown that converters can propagate drive action through the electrical network of a microgrid to actively stabilize voltage and frequency dynamics, improving voltage and frequency quality. Real-time hardware-in-the-loop experimentation is conducted using a PLECS RT Box alongside external digital converter controllers. This allows for investigation of the real-time performance of the proposed algorithm as well as a comparison with traditional governor/exciter control. It is convincingly demonstrated that the remote field-oriented drive can operate alongside existing governor and exciter controls to rapidly damp microgrid voltage and frequency dynamics even during severe disturbances such as the line-start of a large induction motor.

关键词： Microgrid Active Stabilization Synchronous Drives Autonomous Operation hardware in the loop simulation

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Practical Implementation of Autonomous Soaring Algorithm into Open-Source Autopilot for Unmanned Aerial Vehicle

Practical Implementation of Autonomous Soaring Algorithm int...

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AIAA Aviation Forum

作者： Langenscheidt, Roman Rosales, Jesus Gross, Andreas New Mexico State Univ Mech & Aerosp Engn Dept Las Cruces NM 88003 USA

ISBN: (数字)9781624107047

ISBN: (纸本)9781624107047

Autonomous soaring flight offers to extend the loiter time and range of unmanned aerial vehicles. As an important step towards flights tests, an autonomous soaring algorithm was embedded into the PX4 Autopilot software which runs on Pixhawk flight controllers. The implementation was done in Matlab/Simulink with the UAV Toolbox Support Package for PX4 Autopilots. A flag was added to the PX4 Autopilot software to switch between a powered cruise flight mode and a thermaling/gliding flight mode. When the autopilot is in powered cruise flight mode, the autonomous soaring algorithm is inactive and the PX4 position controller takes full control. When the autopilot is in thermaling/gliding flight mode, the autonomous soaring algorithm replaces the PX4 position controller. A simulation environment was built in Simulink for validating the implementation. Extensive tests indicate that the autonomous soaring algorithm performs satisfactorily. First steps were also taken towards hardware-in-the-loop simulations.

关键词： Autonomous Soaring Unmanned Aerial Vehicle Electronic Speed Control Simulink Flight Testing Gliding Flight Cruise Flight hardware in the loop simulation Drag Coefficient Three Degrees of Freedom

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An Novel Electromagnetic Compatibility Predication Method Based on the hardware in the loop simulation for Aircraft Fuel Quantity Indication System

An Novel Electromagnetic Compatibility Predication Method Ba...

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2013 IEEE 5th International Symposium on Microwave,Antenna,Propagation and EMC Technologies for Wireless Communications

作者： Guihao Bao Donglin Su Fei Dai Electronic Information Engineering Institute Beihang University

ISBN: (纸本)9781467360760

The electromagnetic compatibility(EMC) problem of fuel quantity indication system(FQIS) seriously affects aircraft' tasks,such as flight control,air combat,navigation and command,*** to the shortage of FQIS's EMC predication and verification methods,a novel EMC predication method based on hardware in the loop simulation(HILS) is presented and used for aircraft ***'s ensured that electromagnetic environment(EME) and work condition of FQIS are imitated *** with the proposed platform,experimental verification shows that the proposed method can predicate EMC problem of FQIS quantitatively and early,and verify EMC rectification quickly and ***,the predication method has a certain value for promotion.

关键词： electromagnetic compatibility fuel quantity indication system hardware in the loop simulation field coupling to transmission line hardware-in-the-loop simulation electromagnetic compatibility Computer hardware Working Conditions

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Development of a PMSM motor field-oriented control algorithm for electrical vehicles

Development of a PMSM motor field-oriented control algorithm...

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International Conference on Advanced Materials and Mechanical Characterization (ICAMMC)

作者： Ramesh, P. Umavathi, M. Bharatiraja, C. Ramanathan, G. Athikkal, Sivaprasad CMR Inst Technol Dept Elect & Elect Engn Karnataka 560037 Bengaluru India BMS Coll Engn Dept Elect & Elect Engn Bengaluru 560019 Karnataka India SRM Inst Sci & Technol Dept Elect & Elect Engn Kattankulathur 603203 Tamil Nadu India

Recently, with issues such as global warming, melting of glaciers and climate change, the need for sus-tainable methods of living has seen a drastic increase. Combustion cars that run on petrol and diesel are slowly being replaced with electrical vehicles (EVs). Currently, EVs face challenges in terms of range of kilometers offered, availability of charging systems, infrastructure for their development, etc. As the need for electrical vehicles increase, the usages of Permanent Magnet Synchronous Motor (PMSM) too have seen a growing trend. Motor control in an electrical vehicle is extremely crucial as a vehicle on road is subject to different terrains and hence, different loads. Throughout all these different scenarios, it is essential that the motor operates at its optimum efficiency in order to provide optimum vehicle perfor-mance for the driver and passengers. Currently, several methods are available for the control of electrical vehicles, nevertheless the field-oriented control (FOC) method for permanent magnet motors is widely used due to its efficient nature. This paper discusses with the design of modified FOC control algorithm for control the PMSM motor eliminates an initial jerk seen during the starting condition of a motor thereby providing a smoother start. As the entire simulation is done using hardware in the loop model, the values obtained have real life constraints taken into account, as opposed to a software only simula-tion. Moreover, the transient time taken to reach a steady state value in speed and to also change direc-tion of rotation have been improved as well. The simulation has been designed entirely on the Altair Embed software. Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of scientific committee of the International Conference on Advanced Materials and Mechanical Characterization (ICAMMC 2021).

关键词： Permanent Magnet Synchronous Motor Single Chip Controller Field Oriented Control Electrical Vehicles hardware in the loop simulation

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