检索结果-内蒙古大学图书馆

hardware-in-the-loop simulations of GPS-based navigation and control for satellite formation flying

ADVANCES IN SPACE RESEARCH 2010年第11期46卷 1451-1465页

作者： Park, Jae-Ik Park, Han-Earl Park, Sang-Young Choi, Kyu-Hong Yonsei Univ Dept Astron Astrodynam & Control Lab Seoul 120749 South Korea

A relative navigation and formation control algorithm for satellite formation flying was developed, and a hardware-in-the-loop (HIL) simulation testbed was established and configured to evaluate this algorithm. The algorithm presented is a relative navigation estimation algorithm using double-difference carrier-phase and single-difference code measurements based on the extended Kalman filter (EKF). In addition, a state-dependent Riccati equation (SDRE) technique is utilized as a nonlinear controller for the formation control problem. The state-dependent coefficient (SDC) form is formulated to include nonlinearities in the relative dynamics. To evaluate the relative navigation and control algorithms developed, a closed-loop H I L testbed is configured. To demonstrate the performance of the testbed, a test formation flying scenario comprising formation acquisition and keeping in a low earth orbit (LEO) has been established. The relative navigation results from the closed-loop simulations show that a 3D RMS of 0.07 in can be achieved for position accuracy. The targeted leader follower formation flying in the along-track separation of 100 m was maintained with a mean position error of approximately 0.2 m and a standard deviation of 0.9 m. The simulation results show that the NIL testbed is capable of successful demonstration of the GPS-based satellite autonomous formation flying mission. (C) 2010 COSPAR. Published by Elsevier Ltd. All rights reserved.

关键词： Satellite formation flying Relative navigation Formation control State-dependent Riccati equation technique hardware-in-the-loop simulation

来源：评论

学校读者我要写书评

暂无评论

Active Force with Fuzzy Logic Control of a Two-Link Arm Driven by Pneumatic Artificial Muscles

引用

Journal of Bionic Engineering 2011年第4期8卷 474-484页

作者： H. Jahanabadi M. Mailah M. Z. Md Zain H. M. Hooi Department of System Dynamics and Control Faculty of Mechanical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Bahru Skudai Johor Malaysia

In this paper, the practicality and feasibility of Active Force Control （AFC） integrated with Fuzzy Logic（AFCAFL） applied to a two link planar arm actuated by a pair of Pneumatic Artificial Muscle （PAM） is investigated. The study emphasizes on the application and control of PAM actuators which may be considered as the new generation of actuators comprising fluidic muscle that has high-tension force, high power to weight ratio and high strength in spite of its drawbacks in the form of high nonlinearity behaviour, high hysteresis and time varying parameters. Fuzzy Logic （FL） is used as a technique to estimate the best value of the inertia matrix of robot arm essential for the AFC mechanism that is complemented with a conventional Propor- tional-Integral-Derivative （PID） control at the outermost loop. A simulation study was first performed followed by an experi- mental investigation for validation. The experimental study was based on the independent joint tracking control and coordinated motion control of the arm in Cartesian or task space. In the former, the PAM actuated arm is commanded to track the prescribed trajectories due to harmonic excitations at the joints for a given frequency, whereas for the latter, two sets of trajectories with different loadings were considered. A practical rig utilizing a hardware-in-the-loop simulation （HILS） configuration was developed and a number of experiments were carried out. The results of the experiment and the simulation works were in good agreement, which verified the effectiveness and robustness of the proposed AFCAFL scheme actuated by PAM.

关键词： pneumatic artificial muscle active force control fuzzy estimator hardware-in-the-loop simulation

来源：评论

学校读者我要写书评

暂无评论

Investigation on the exit phase controls for emergency vehicle preemption

引用

KSCE JOURNAL OF CIVIL ENGINEERING 2011年第8期15卷 1419-1426页

作者： Yun, Ilsoo Park, Byungkyu Brian Lee, Choul Ki Oh, Young Tae Ajou Univ Div Environm Civil & Transportat Engn Suwon 443749 South Korea Univ Virginia Dept Civil & Environm Engn Charlottesville VA 22904 USA

Many traffic signal control systems used in the U.S. have Emergency Vehicle Preemption (EVP) systems that change traffic signals to clear an intersection for emergency vehicles. However, one of the challenges of implementing EVP under coordinated-actuated signal systems is selecting the best recovery method at the end of preemption such that disruptions to normal traffic signal operations may be minimized. To this end, there have been lots of research efforts which have compared the performances of various transition methods after EVP operations using microscopic traffic simulation models, hardware-in-the-loop simulations (HILS) or softwarein-the-loop simulations (SILS). However, few attempted to implement exit phase controls during the EVP operations, which is available in recent advanced traffic controllers such as the ASC/3-2100 traffic controller. This paper was intended to report the evaluation results of two types of exit phase control - (i) fixed exit phase control and (ii) dynamic exit phase control during EVP operations. The evaluation was conducted using a HILS on an urban corridor including four coordinated-actuated signals along Lee Jackson Memorial Highway in Chantilly, Virginia. The evaluation results indicated that (i) the use of fixed exit phase control should be considered in the development of EVP strategies as it is able to minimize disruptions due to the EVP operation, and (ii) the dynamic exit phase control is capable to give an additional benefit during EVP operations. In the evaluation, the fixed and dynamic exit phase control reduced network-wide average delay time in seconds per vehicle to 2.8% and 4.5% over no exit phase control case, respectively.

关键词： signal controller preemption exit phase transition hardware-in-the-loop simulation

来源：评论

学校读者我要写书评

暂无评论

hardware in loop simulation for Emergency Communication Mobile Ad Hoc Network

引用

Journal of Beijing Institute of Technology 2007年第4期16卷 476-480页

作者：杨杰安建平刘珩 School of Information Science and Technology Beijing Institute of Technology

For the research of mobile Ad hoc network (MANET), hardware in the loop simulation (HILS) is introduced to improve simulation fidelity. The architectures and frameworks of HILS system are discussed. Based on HILS and QualNet network simulator, two kinds of simulation frameworks for MANET multicast emergency communication network are proposed. By running simulation under this configuration and doing experiments with on-demand multicast routing protocol (ODMRP), unicast and multicast functions of this protocol are tested. Research results indicate that HILS method can effectively reduce the difficulty of system modeling and improve precision of simulation, and can further accelerate transition from design to system deployment.

关键词： hardware-in-the-loop simulation mobile Ad hoc network multicast routing protocol

来源：评论

学校读者我要写书评

暂无评论

Supervisory control of hybrid powertrains: An experimental benchmark of offline optimization and online energy management

引用

CONTROL ENGINEERING PRACTICE 2011年第11期19卷 1253-1265页

作者： Chasse, A. Sciarretta, A. IFP Energies Nouvelles F-92500 Rueil Malmaison France

The paper describes a chain of tools aimed at the development and validation of energy management strategies (EMS) for hybrid powertrains. These tools comprise an offline optimizer based on Pontryagin minimum principle (PMP) and the online equivalent consumption minimization strategy (ECMS), both implemented in a dynamic simulation platform and as a real-time controller in a semi-physical testing equipment. The results presented are aimed at illustrating the continuity of the various approaches by comparing the offline-generated energy management laws with their online counterparts, both in terms of trajectories over time and in terms of global results (fuel consumption, state-of-charge deviations). (C) 2011 Elsevier Ltd. All rights reserved.

关键词： Powertrain control Hybrid and electric vehicles hardware-in-the-loop simulation Optimal control Automotive controls

来源：评论

学校读者我要写书评

暂无评论

A vectorial bootstrapping approach for integrated GNSS-based relative positioning and attitude determination of spacecraft

引用

ACTA ASTRONAUTICA 2011年第7-8期68卷 1113-1125页

作者： Buist, Peter J. Teunissen, Peter J. G. Verhagen, Sandra Giorgi, Gabriele Delft Univ Technol DEOS NL-2629 HS Delft Netherlands Curtin Univ Technol Dept Spatial Sci Perth WA Australia

Traditionally in multi-spacecraft missions (e.g. formation flying, rendezvous) the GNSS-based relative positioning and attitude determination problem are treated as independent. In this contribution we will investigate the possibility to use multi-antenna data from each spacecraft, not only for attitude determination, but also to improve the relative positioning between spacecraft. Both for ambiguity resolution and accuracy of the baseline solution, we will show the theoretical improvement achievable as a function of the number of antennas on each platform. We concentrate on ambiguity resolution as the key to precise relative positioning and attitude determination and will show the theoretical limit of this kind of approach. We will use mission parameters of the European Proba-3 satellites in a software-based algorithm verification and a hardware-in-the-loop simulation. The software simulations indicated that this approach can improve single epoch ambiguity resolution up to 50% for relative positioning applying the typical antenna configurations for attitude determination. The hardware-in-the-loop simulations show that for the same antenna configurations, the accuracy of the relative positioning solution can improve up to 40%. (C) 2010 Elsevier Ltd. All rights reserved.

关键词： GNSS/GPS Kinematic relative positioning Multi-antenna hardware-in-the-loop simulation Attitude determination

来源：评论

学校读者我要写书评

暂无评论

FPGA-Based Real-Time Emulation of Power Electronic Systems With Detailed Representation of Device Characteristics

引用

IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 2011年第1期58卷 358-368页

作者： Myaing, Aung Dinavahi, Venkata Univ Alberta Dept Elect & Comp Engn Edmonton AB T6G 2V4 Canada

This paper presents a field-programmable gate array (FPGA)-based real-time digital simulator for power electronic apparatus based on a realistic device-level behavioral model. A three-level 12-pulse voltage source converter (VSC)-fed induction machine drive is implemented on the FPGA. The VSC model is computed at a fixed time step of 12.5 ns, allowing a realistic representation of insulated-gate bipolar transistor (IGBT) nonlinear switching characteristics and power losses. The simulator also models a squirrel-cage induction machine, a direct field-oriented control system, and a pulsewidth modulator to achieve the real-time simulation of the complete drive system. All the models have been implemented using very high speed integrated circuit hardware description language (VHDL). Real-time simulation results have been validated using the measured device-level IGBT characteristics.

关键词： Field-programmable gate arrays (FPGAs) hardware-in-the-loop simulation induction motor drives pulsewidth-modulated power converters real-time systems

来源：评论

学校读者我要写书评

暂无评论

Development of hardware-in-the-loop Testbed for Evaluating Truck Safety Systems

引用

TRANSPORTATION RESEARCH RECORD 2011年第2265期2265卷 43-53页

作者： Donoughe, Kelly Rakha, Hesham Swanson, Wayne Park, Sangjun Bryson, Jared Virginia Polytech Inst & State Univ Dept Civil & Environm Engn Blacksburg VA 24061 USA Virginia Polytech Inst & State Univ Virginia Tech Transportat Inst Blacksburg VA 24061 USA

The research presented developed a hardware-in-the-loop system for testing in-truck safety technology. The paper describes the hardware and software components that were required to develop the system, how the various components were integrated, and some initial validation tests of the system. Specifically, the paper describes how the hardware-in-the-loop system interacted with the TruckSim simulator to produce realistic results. The models used for the validation of the system are detailed;a demonstration of the system validity follows. The absolute and relative errors between the TruckSim simulation results and the hardware-in-the-loop simulation were demonstrated by a comparison of the temporal variation in velocity and the truck roll angle. The study demonstrated the benefits of an accurate hardware-in-the-loop system for testing future in-vehicle safety systems.

关键词： hardware-in-the-loop simulation

来源：评论

学校读者我要写书评

暂无评论

Interfacing Issues in Real-Time Digital Simulators IEEE Task Force on Interfacing Techniques for simulation Tools

引用

IEEE TRANSACTIONS ON POWER DELIVERY 2011年第2期26卷 1221-1230页

作者： Ren, W. Sloderbeck, M. Steurer, M. Dinavahi, V. Noda, T. Filizadeh, S. Chevrefils, A. R. Matar, M. Iravani, R. Dufour, C. Belanger, J. Faruque, M. O. Strunz, K. Martinez, J. A. Univ Alberta Dept Elect & Comp Engn Edmonton AB T6G 2V4 Canada

This paper deals with the current state-of-the-art in interfacing issues related to real-time digital simulators employed in the simulation of power systems and power-electronic systems. This paper provides an overview of technical challenges encountered and their solutions as the real-time digital simulators evolved. hardware-in-the-loop interfacing for controller hardware and power apparatus hardware are also presented.

关键词： Field-programmable gate arrays (FPGAs) hardware-in-the-loop simulation interface algorithms modeling power-electronic systems power system simulation real-time systems

来源：评论

学校读者我要写书评

暂无评论

Research on attitude determination algorithm of intelligent munition running on near surface

引用

Binggong Xuebao/Acta Armamentarii 2012年第SUPPL2期33卷 401-405页

作者： Bian, Jiang-Nan Shao, Zhi-Yu Feng, Shun-Shan Fang, Jing State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing 100081 China

The attitude of underwater intelligent munition is difficult to be determined because its movement on near surface is subject to wind, wave and ocean current disturbance. An ocean wave model was established in the mathematical and hardware-in-the-loop simulation stages. An attitude determination algorithm was given based on magnetic, angular rate, and gravity (MARG) sensors combining with the ocean wave model. The mathematical and hardware-in-the-loop simulation tests of the underwater intelligent munitions were carried out. The test results show that the attitude determination methods discussed in this paper can effectively resist the complex interference. The results provide a reference for the design of the attitude control system and the shipping test of the underwater intelligent munitions.

关键词： hardware-in-the-loop simulation

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：