• Title/Summary/Keyword: hardware-in-the-loop (HIL) simulator

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Development of a Hardware-In-Loop (HIL) Simulator for Spacecraft Attitude Control Using Momentum Wheels

  • Kim, Do-Hee;Park, Sang-Young;Kim, Jong-Woo;Choi, Kyu-Hong
    • Journal of Astronomy and Space Sciences
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    • v.25 no.4
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    • pp.347-360
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    • 2008
  • In this paper, a Hardware-In-the-Loop simulator to simulate attitude control of space craft using momentum wheels is developed. The simulator consists of a spherical air bearing system allowing rotation and tilt in all three axes, three momentum wheels for actuation, and an AHRS (Attitude Heading Reference System). The simulator processes various types of data in PC104 and wirelessly communicates with a host PC using TCP/IP protocol. A simple low-cost momentum wheel assembly set and its drive electronics are also developed. Several experiments are performed to test the performance of the momentum wheels. For the control performance test of the simulator, a PID controller is implemented. The results of experimental demonstrations confirm the feasibility and validity of the Hardware-In-the-Loop simulator developed in the current study.

A Preliminary Development of Real-Time Hardware-in-the-Loop Simulation Testbed for the Satellite Formation Flying Navigation and Orbit Control (편대비행위성의 항법 및 궤도제어를 위한 실시간 Hardware-In-the-Loop 시뮬레이션 테스트베드 초기 설계)

  • Park, Jae-Ik;Park, Han-Earl;Shim, Sun-Hwa;Park, Sang-Young;Choi, Kyu-Hong
    • Journal of Astronomy and Space Sciences
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    • v.26 no.1
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    • pp.99-110
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    • 2009
  • The main purpose of the current research is to developments a real-time Hardware In-the-Loop (HIL) simulation testbed for the satellite formation flying navigation and orbit control. The HIL simulation testbed is integrated for demonstrations and evaluations of navigation and orbit control algorithms. The HIL simulation testbed is composed of Environment computer, GPS simulator, Flight computer and Visualization computer system. GPS measurements are generated by a SPIRENT GSS6560 multi-channel RF simulator to produce pseudorange, carrier phase measurements. The measurement date are transferred to Satrec Intiative space borne GPS receiver and exchanged by the flight computer system and subsequently processed in a navigation filter to generate relative or absolute state estimates. These results are fed into control algorithm to generate orbit controls required to maintain the formation. These maneuvers are informed to environment computer system to build a close simulation loop. In this paper, the overall design of the HIL simulation testbed for the satellite formation flying navigation and control is presented. Each component of the testbed is then described. Finally, a LEO formation navigation and control simulation is demonstrated by using virtual scenario.

Development of Hardware-in-the-Loop Simulator for Testing Embedded System of Automatic Transmission (자동변속기용 임베디드 시스템 성능 시험을 위한 Hardware-in-the Loop 시뮬레이터 구축)

  • Jang, In-Gyu;Seo, In-Keun;Jeon, Jae-Wook;Hwang, Sung-Ho
    • Journal of Institute of Control, Robotics and Systems
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    • v.14 no.3
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    • pp.301-306
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    • 2008
  • Drivers are becoming more fatigued and uncomfortable with increase in traffic density, and this condition can lead to slower reaction time. Consequently, they may face the danger of traffic accidents due to their inability to cope with frequent gear shifting. To reduce this risk, some drivers prefer automatic transmission (AT) over manual transmission (MT). The AT offers more superior drivability and less shifting shock than the MT; therefore, the AT market share has been increasing. The AT is controlled by an electronic control unit (ECU), which provides better shifting performance. The transmission control unit (TCU) is a higher-value-added product, so the companies that have advanced technologies end to evade technology transfer. With more cars gradually using the ECU, the TCU is expected to be faster and more efficient for organic communication and arithmetic processing between the control systems than the l6-bit controller. In this paper, the model of an automatic transmission vehicle using MATLAB/Simulink is developed for the Hardware in-the-Loop (HIL) simulation with a 32-bit embedded system, and also the AT control logic for shifting is developed by using MATLAB/Simulink. The developed AT control logic, transformed automatically by real time workshop toolbox, is loaded to a 32-bit embedded system platform based on Freescale's MPC565. With both vehicle model and 32-bit embedded system platform, we make the HIL simulation system and HIL simulation of AT based on real time operating system (RTOS) is performed. According to the simulation results, the developed HIL simulator will be used for the performance test of embedded system for AT with low cost and effort.

Development of FPGA Based HIL Simulator for PMS Performance Verification of Natural Liquefied Gas Carriers (액화천연가스운반선의 PMS 성능 검증을 위한 FPGA 기반 HIL 시뮬레이터 개발)

  • Lee, Kwangkook
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.22 no.7
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    • pp.949-955
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    • 2018
  • Hardware-in-the-loop (HIL) simulation is a technique that can be employed for developing and testing complex real-time embedded systems. HIL simulation provides an effective platform for verifying power management system (PMS) performance of liquefied natural gas carriers, which are high value-added vessels such as offshore plants. However, HIL tests conducted by research institutes, including domestic shipyards, can be protracted. To address the said issue, this study proposes a field programmable gate array (FPGA) based PMS-HIL simulator that comprises a power supply, consumer, control console, and main switchboard. The proposed HIL simulation platform incorporated actual equipment data while conducting load sharing PMS tests. The proposed system was verified through symmetric, asymmetric, and fixed load sharing tests. The proposed system can thus potentially replace the standard factory acceptance tests. Furthermore, the proposed simulator can be helpful in developing additional systems for vessel automation and autonomous operation, including the development of energy management systems.

Test Platform Development of Vessel's Power Management System Using Hardware-in-the-Loop Simulation Technique

  • Lee, Sang-Jung;Kwak, Sang-Kyu;Kim, Sang-Hyun;Jeon, Hyung-Jun;Jung, Jee-Hoon
    • Journal of Electrical Engineering and Technology
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    • v.12 no.6
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    • pp.2298-2306
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    • 2017
  • A PMS (Power Management System) controls vessel's power systems to improve the system efficiency and to protect a blackout condition. The PMS should be developed with considering the type and the capacity of the vessel's power system. It is necessary to test the PMS functions developed for vessel's safe operations under various sailing situations. Therefore, the function tests in cooperation with practical power systems are required in the PMS development. In this paper, a hardware-in-the-loop (HIL) simulator is developed for the purposes of the PMS function tests. The HIL simulator can be more cost-effective, more time-saved, easier to reproduce, and safer beyond the normal operating range than conventional off-line simulators, especially at early stages in development processes or during fault tests. Vessel's power system model is developed by using a MATLAB/SIMULINK software and by communicating between an OPAL-RT's OP5600 simulator. The PMS uses a Modbus communication protocol implemented using LabVIEW software. Representative tests of the PMS functions are performed to verify the validity of the proposed HIL-based test platform.

A Study on the Development of HILS System for Performance Test of Digital Governor (디지털 조속기의 성능 시험을 위한 HILS 시스템 개발에 관한 연구)

  • 장민규;조성훈;전일영;안병원;박영산;배철오;이성근;김윤식
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.05a
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    • pp.317-319
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    • 2003
  • HILS(Hardware In-the Loop Simulation) is commonly used in the development and testing of embedded systems, when those systems cannot be tested easily, thoroughly, and repeated in their operational environments. HILS can be a useful tool to develop products more quickly and cost effectively and also reduces the possibility of serious defects being discovered after production. During the product development period, Design optimization and hardware/software debugging can be performed using HILS skill. This paper describes a HILS model for the STG(Steam-Turbine Generator) Simulator to prove the performance of the developed Digital Governor. It is developed using software technics which can confirm the responses of a real-time system.

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Model Based Hardware In the Loop Simulation of Thermal Management System for Performance Analysis of Proton Exchange Membrane Fuel Cell (고분자전해질 연료전지 특성 해석을 위한 열관리 계통 모델 기반 HILS 기초 연구)

  • Yun, Jin-Won;Han, Jae-Young;Kim, Kyung-Taek;Yu, Sang-Seok
    • Transactions of the Korean hydrogen and new energy society
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    • v.23 no.4
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    • pp.323-329
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    • 2012
  • A thermal management system of a proton exchange membrane fuel cell is taken charge of controlling the temperature of fuel cell stack by rejection of electrochemically reacted heat. Two major components of thermal management system are heat exchanger and pump which determines required amount of heat. Since the performance and durability of PEMFC system is sensitive to the operating temperature and temperature distribution inside the stack, it is necessary to control the thermal management system properly under guidance of operating strategy. The control study of the thermal management system is able to be boosted up with hardware in the loop simulation which directly connects the plant simulation with real hardware components. In this study, the plant simulation of fuel cell stack has been developed and the simulation model is connected with virtual data acquisition system. And HIL simulator has been developed to control the coolant supply system for the study of PEMFC thermal management system. The virtual data acquisition system and the HIL simulator are developed under LabVIEWTM Platform and the Simulation interface toolkit integrates the fuel cell plant simulator with the virtual DAQ display and HIL simulator.

Development of Hardware In-the-Loop Simulation System for Testing Power Management of DC Microgrids Based on Decentralized Control (분산제어 기반 직류 마이크로그리드 전력관리시스템의 HIL 시뮬레이션 적용 연구)

  • To, Dinh-Du;Le, Duc-Dung;Lee, Dong-Choon
    • The Transactions of the Korean Institute of Power Electronics
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    • v.24 no.3
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    • pp.191-200
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    • 2019
  • This study proposes a hardware-in-the-loop simulation (HILS) system based on National Instruments' PXI platform to test power management and operation strategies for DC microgrids (MGs). The HILS system is developed based on the controller HIL prototype, which involves testing the controller board in hardware with a real-time simulation model of the plant in a real-time digital simulator. The system provides an economical and effective testing function for research on MG systems. The decentralized power management strategy based on the DC bus signaling method for DC MGs has been developed and implemented on the HILS platform. HILS results are determined to be similar to those of the off-line simulation in PSIM software.

Development of the SVPG(Sungkyunkwan Univ. Virtual Proving Ground) : System Configuration and Application of the Virtual Proving Ground (가상주행시험장(SVPG) 개발: 가상주행시험장의 시스템 구성 및 운영)

  • 서명원;구태윤;권성진;신영수;조기용;박대유
    • Transactions of the Korean Society of Automotive Engineers
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    • v.10 no.1
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    • pp.195-202
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    • 2002
  • By using modeling and simulation. today's design engineers are simultaneously reducing time to market and decreasing the cost of development, while increasing the quality and reliability of their products. A driving simulator is the best example of this method and allows virtual designs of control systems, electronic systems, mechanical systems and hydraulic system of a vehicle to be evaluated before costly prototyping. The objective of this Paper is to develop the virtual Proving: ground using a driving simulator and to show its capabilities of an automotive system development tool. For this purpose, including a real-time vehicle dynamics analysis system, the PC-based driving simulator and the virtual proving ground are developed by using VR(Virtual Reality) techniques. Also ABS HIL(Hardware-In-the-Loop ) simulation is performed successfully.

Verification of a hybrid control approach for spacecraft attitude stabilization through hardware-in-the-loop simulation

  • Kim, Sung-Woo;Park, Sang-Young
    • Bulletin of the Korean Space Science Society
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    • 2011.04a
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    • pp.32.2-32.2
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    • 2011
  • State dependent Riccati equation (SDRE) control technique has been widely used in the control society. Although it solves nonlinear optimal control problems, which minimizes state error and control efforts simultaneously, it has drawbacks when it is to be applied to the real time systems in that it requires much computational efforts. So the real time system whose computational ability is limited (for example, satellites) cannot afford to use SDRE controller. To solve this problem, a hybrid controller which is based on MSDRE (Modified SDRE) and ANFIS (Adaptive Neuro-Fuzzy Inference System) has been proposed by Abdelrahman et al. (2010). We propose a hybrid controller based on SDRE and ANFIS, and apply the hybrid controller to the hardware attitude simulator to perform a HIL (Hardware-In-the-Loop) simulation. Through HIL simulation, it is demonstrated that the hybrid controller satisfies the control requirement and the computation load is reduced significantly. In addition, the effects of statistical properties of the ANFIS training data to the performance of the ANFIS controller have been analyzed.

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