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simulation Platform for SINS/GPS Integrated Navigation System of Hypersonic Vehicles Based on Flight Mechanics

SENSORS 2020年第18期20卷 5418页

作者： Chen, Kai Shen, Fuqiang Zhou, Jun Wu, Xiaofeng Northwestern Polytech Univ Xian 710072 Shanxi Peoples R China Univ Sydney Sch Aerosp Mech & Mechatron Engn Sydney NSW 2006 Australia

In this study, a simulation platform for an integrated navigation algorithm for hypersonic vehicles based on flight mechanics is designed. In addition, the generation method of inertial measurement unit data and satellite receiver data is introduced. First, the interface relationship between a high-precision six-degree-of-freedom (6DoF) model and the simulation platform in the launch-centered Earth-fixed frame is introduced. Three-axis theoretical specific force and angular velocity are output by the 6DoF model. Accelerometer and gyroscope error models are added, and integral processing of the specific force and angular velocity is performed to obtain velocity increment of the accelerometer and the angular increment of the gyroscope. These data are quantified to obtain the accelerometer and gyroscope pulses. The satellite's pseudo-range and pseudo-range rate as well as its position and velocity are obtained from the theoretical position, velocity, the attitude of the hypersonic vehicle's 6DoF model output, and the global positioning system (GPS) satellite broadcast ephemeris. The simulation data can be used for the verification of the loose and tight coupling integrated navigation algorithms. The simulation test verifies the accuracy of the designed method.

关键词： trajectory generator hypersonic vehicle SINS GPS integrated navigation hardware-in-the-loop simulation

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GNSS-based simulation of spacecraft formation flight: A case study of ionospheric plasma remote sensing

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RADIATION EFFECTS AND DEFECTS IN SOLIDS 2020年第11-12期175卷 998-1001页

作者： Peng, YuXiang Scales, Wayne Virginia Tech Ctr Space Sci & Engn Res Blacksburg VA 24061 USA Qualcomm Technol Inc Santa Clara CA USA

Future space weather missions using spacecraft formation flying can provide more robust, flexible, sustainable, and low-cost observational capability on multi-scale ionospheric plasma structures. The Virginia Tech Formation Flying Testbed (VTFFTB), a hardware-in-the-loop simulation testbed using multi-constellation, multi-frequency global navigation satellite systems (GNSS), has recently been developed to simulate closed-loop, real-time spacecraft formation flight with a group of 2 or 3 satellites at low Earth orbits (LEO). Onboard GNSS receivers are used for formation navigation as well as ionospheric plasma irregularities measurements. In a VTFFTB simulation, the Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) was integrated to simulate Equatorial plasma bubbles (EPB) and study the EPB impacts on GNSS signals tracked by LEO formation satellites. This case study demonstrates the VTFFTB application to study the ionospheric plasma impacts on GNSS-related technologies using global space weather models and facilitates development of new ionospheric remote sensing techniques.

关键词： GNSS GPS spacecraft formation flight ionospheric plasma hardware-in-the-loop simulation TIEGCM

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Verification of a vehicle dynamic model for real-time HILS(hardware-in-the-loop simulation)

Verification of a vehicle dynamic model for real-time HILS(H...

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The sixth Asian Conference on Multibody Dynamics(ACMD 2012)

作者： Bo-Min Kim Sang-Do Na Kwang-Suk Kim Wan-Suk Yoo School of Mechanical Engineering Pusan National University Dept.of Automotive Engineering Inha Technical College

This study verified the feasibility of the real-time simulation of a vehicle dynamic model in hardware-in-the-loop simulation(HILS).The HILS allows it to reduce time and cost for a real vehicle drive *** time step for HILS was set to 1 ms and a vehicle dynamic analysis was finished within 20%of the proposed time step.A verification of a real-time simulation of a vehicle dynamic model for HILS was carried out in Model-In-the-loop simulation(MILS).

关键词： Verification of a vehicle dynamic model for real-time HILS hardware-in-the-loop simulation

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An investigation into factors determining the metering performance of a fuel control unit in an aero engine

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FLOW MEASUREMENT AND INSTRUMENTATION 2020年 71卷

作者： Yuan, Yuan Zhang, Tianhong Lin, Zhonglin Zhang, Jiaming Nanjing Univ Aeronaut & Astronaut Jiangsu Prov Key Lab Aerosp Power Syst Nanjing Peoples R China

Fuel flow rate is the most important and most used control parameter for aero engines and it is assured by a device called the fuel control unit (FCU). To investigate factors that determine the metering performance of the fuel control unit, this research comes into being. This paper establishes mathematical models revealing the effect of these determinants, which are pressure difference across the metering valve and actuating process of the metering valve. Results show that the pressure difference does not keep constant as we thought. It will influence the accuracy of metered fuel of the fuel control unit. Furthermore, factors such as the input current of the servo valve, the pressure of the servo fuel and the moving direction of the metering valve will have impacts on the actuating process of the metering valve, influencing the dynamic response of the fuel control unit. Finally, the analyses are affirmed in a hardware-in-the-loop (HIL) experiment involving a real fuel control unit.

关键词： Fuel control unit Modeling Fuel metering Electro-hydraulic servo valve hardware-in-the-loop simulation

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Active Control of Regenerative Chatter in Turning by Compensating the Variable Cutting Force

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IEEE ACCESS 2020年 8卷 224006-224019页

作者： Etxebarria, Ainhoa Barcena, Rafael Mancisidor, Iker Univ Basque Country UPV EHU Fac Engn Bilbao Elect Technol Dept Bilbao 48013 Spain IK4 IDEKO Dynam & Control Dept Elgoibar 20870 Spain

During metal cutting operations performed by conventional machine tools (turning, milling horizontal ellipsis ) often appear vibrations due to the emergence of a variable force generated by the so-called regenerative effect. Such vibrations, known as regenerative chatter, may not be prevented at the machine design stage and often limit productivity severely. Therefore, a lot of effort has been put into developing solutions for this problem in the past. To compare the performance of such solutions, it is interesting to realistically reproduce in the laboratory the mentioned regenerative effect in a reliable, repeatable way and covering general machining conditions. With this objective, the paper presents an improvement of a hardware-in-the-loop chatter simulator that creates this type of vibration for turning machines on a specifically designed mechanical structure. This simulator completely corrects the effects that the delay, introduced by the used equipment (by actuator and controller, mainly), has on the vibration and, moreover, it is capable of imposing general behaviors for any machine with a certain damping factor. Later, by installing inertial actuators on the mentioned structure, the operation of various active chatter control systems may be compared. In this work, the effort made to accurately create the variable machining force is harnessed to try its compensation, by generating with the inertial actuator an approximately inverse control action. In this context, the performance of the novel controller, based on the cancelation of the whole variable cutting force, is analyzed.

关键词： Tools Machining Force Damping Vibrations Turning Limiting hardware-in-the-loop simulation regenerative chatter active control practical implementation parameter uncertainty real-time control turning machines

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Dynamometer Test Rig Drive Train Control with a High Dynamic Performance: Measurements and Experiences

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IFAC-PapersOnLine 2020年第2期53卷 12663-12668页

作者： Mohsen Neshati Jan Wenske Fraunhofer Institute for Wind Energy Systems (IWES) Dynamic Nacelle Laboratory 27572 Bremerhaven Germany

This paper presents the control design and dynamic performance evaluation for a 10MW dynamometer test rig for wind turbine nacelles. The purpose is to control the applied torque by the drive train, required for an accurate emulation of rotor characteristics in the laboratory. This is implemented in a hardware-in-the-loop simulation framework for electrical certification test procedures, introducing high dynamic requirements. Therefore, a feedback-feedforward as well as a H-infinity controller is implemented to benefit from high dynamic and robustness capabilities, respectively. Furthermore, due to the lack of a suitable torque measurement in the meganewton-meter range, model-based algorithms are incorporated and the implemented time-varying Kalman filter provides the unmeasured variables. In addition, for performance analysis independent of any specimen, experiments using small signal perturbation as test functions are executed under load conditions. The results are analysed here elaborately and the obtained control bandwidth is distinguished under realistic conditions. Overall, the measurements demonstrate an effective control with a bandwidth of up to 30Hz.

关键词： Dynamometers Automatic control H-infinity control Feedforward control Kalman filters Torque control Dynamic tests Dynamic properties hardware-in-the-loop simulation

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Real-Time Flow Control of Blade Section Using a Hydraulic Transmission System Based on an H-Inf Controller with LMI Design

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ENERGIES 2020年第19期13卷

作者： Liu, Tingrui Zhao, Kang Sun, Changle Jia, Jiahao Liu, Guifang Shandong Univ Sci & Technol Coll Mech & Elect Engn Qingdao 266590 Peoples R China

Vibration and real-time flow control of the 2D blade section of wind turbines with three degrees of freedom (3-DOF), excited by external pitch motion, are investigated based on an H-inf (H-infinity) controller using linear-matrix-inequality (HIC/LMI) design. The real-time flow control for the purpose of aeroelastic flutter suppression includes not only the driving process of real-time physical equipment, but also the realization of real-time control algorithm in the physical controller. The aeroelastic system combined with pitch motion is controlled by a kind of HIC/LMI algorithm. The real-time external pitch motion is driven by rack-piston cylinder (RPC) using a hydraulic transmission system (HTS). The unsteady aerodynamic loads model is simplified by the HTS system. The HTS is actuated by a proportional-flow valve (PFV) which is controlled by another HIC/LMI algorithm, a novel algorithm for waveform tracking. According to the result of waveform tracking, the input current signal of PFV is realized by the configuration of the controller hardware system and its external circuits. In two types of HIC/LMI algorithms, controller stabilities are affirmed using Lyapunov analyses, and controller values are derived and obtained by using LMI designs. Flutter suppression for divergent and instable displacements is shown, with obvious controlled effects illustrated. An online monitoring experimental platform using hardware-in-the-loop simulation, based on Siemens S7-200 programmable logic controller (PLC) hardware and Kingview detection system, is built to implement pitch motion based on HTS and configure the signal input of PFV in pitch control.

关键词： real-time flow control aerodynamic load flutter suppression H-infinity controller linear matrix inequality pitch control hydraulic transmission system hardware-in-the-loop simulation

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Implementation of an FPGA-based Real-Time Emulator for the Rapid Validation of Power Electronics System in Fuel Cell Electric Vehicle

Implementation of an FPGA-based Real-Time Emulator for the R...

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IEEE Transportation Electrification Conference and Expo (ITEC)

作者： Bai, Hao Liu, Chen Ma, Rui Paire, Damien Breaz, Elena Gao, Fei Univ Bourgogne Franche Comte CNRS UTBM ENERGIE DeptFEMTO ST Inst Dijon France Northwestern Polytech Univ Sch Automat Xian Shaanxi Peoples R China

ISBN: (纸本)9781538693100

Power electronics system (PES) is an essential part of the fuel cell electric vehicle (FCEV), which controls the electricity from the power supplies to the electric equipment. It usually consists of the DC-DC boost converter, the motor drive inverter, and the bi-directional boost-buck converter. In this paper, an FPGA-based real-time emulator is developed for the rapid validation of the FCEV PES performance. The involved power electronics circuits are modeled and solved in a paralleled structure, which makes full advantages of the FPGA parallelism. The computational latency can be reduced to an ultra-low 5Ons after its real-time implementation on the National Instrument FlexRio NI -7975R FPGA module. The accuracy of the developed real-time emulator is proved by comparing the FPGA-based simulation results with the offline simulation tool, and the effectiveness is then validated by the real-time simulation on the NI FPGA-based real-time platform.

关键词： Real-time simulation power converter FPGA fuel cell electric vehicle hardware-in-the-loop simulation

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Reduced-scale hardware-in-the-loop simulation of a Peugeot 3∞8 Hybrid4 Vehicle

Reduced-scale Hardware-In-the-Loop Simulation of a Peugeot 3...

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IEEE Vehicle Power and Propulsion Conference

作者： T. Letrouve A. Bouscayrol W. Lhomme N. Dollinger F. Mercier Calvairac University Lillel L2EP PSA Peugeot Citroen

ISBN: (纸本)9781467309530

During the development phase of a complex system like a Hybrid Electric Vehicle, different steps are done to develop the control and the energy management. Nowadays, only two steps are generally done: simulation and experimentation on the prototype vehicle. For complex system, a hardware-In-the-loop (HIL) simulation phase can be inserted between these two steps. In this paper, a HIL simulation of the Peugeot 3∞8 HYbrid4 vehicle is proposed. This vehicle has a double parallel architecture that makes the emulation complex. In order to structure this approach EMR (Energetic Macroscopic Representation) is used.

关键词： hardware-in-the-loop simulation Prototype Vehicle Complex systems vehicle simulating experimentation Parallel architectures

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Predicting coupling signals in a material flow real-time co-simulation with a Kalman filter

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Procedia CIRP 2020年 88卷 9-14页

作者： Annika Kienzlen Christian Scheifele Alexander Verl University of Stuttgart Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstr. 36 70174 Stuttgart Germany

A hardware-in-the-loop simulation has to use the control cycle as simulation clock. This time-deterministic clocking can be difficult to meet for complex behavior models in a real-time simulation. To accelerate a real-time simulation, the calculation can be parallelized by co-simulation whereby multiple, differently detailed behavior models can be simulated parallelly. In these multi-scale models, a slower, detailed model guides a fast, abstract model. In this work, a Kalman filter is examined as a multi-rate method to predict the signals of a physical-based model for a material flow simulation in real-time. To improve the results, smoothing and boundary conditions are added.

关键词： hardware-in-the-loop simulation real-time co-simulation multi-rate methods multi-scale models Kalman filter

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