hardware-in-the-loop simulation is being increasingly used in verification and validation of embedded computer systems;as well as for rapid prototyping and validation of models. The numerous benefits of this technique...
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ISBN:
(纸本)9781538635902
hardware-in-the-loop simulation is being increasingly used in verification and validation of embedded computer systems;as well as for rapid prototyping and validation of models. The numerous benefits of this technique and the possibility of widespread use is hindered by the high cost of the necessary infrastructure. The proposed solution is based on a PC executing the plant simulation and connected, via USB, to an electrical interface module that provides the interfacing signals to the system-in-test. The results indicate that the simulation platform is able to send signals to the system-in-test and receive replies, via interface module, with roundtrip latencies in the order of three milliseconds, which are compatible with the response times required by a range of applications. This platform is mainly aimed at educational purposes, because its relatively low cost makes it more affordable by academic institutions and students.
Modeling of rain fading channel dynamics is essential to the real-time prediction of link availability for Ka-band satellite communication system under rain attenuation impairment, and can validate fade mitigation tec...
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ISBN:
(纸本)9780819469601
Modeling of rain fading channel dynamics is essential to the real-time prediction of link availability for Ka-band satellite communication system under rain attenuation impairment, and can validate fade mitigation techniques (FMT) such as adaptive transmission and diversity. The mechanism of dynamic rain attenuation model based on time-series generator is firstly concerned in this paper. We further provide a scheme and implementation of real-time simulator for dynamic rain fading channels based on hardware-in-the-loop (HIL) simulation method and general Field Programmable Logic Array (FPGA) device. Finally, the impact of adaptive modulation fade countermeasures (AMFC) in the different state of rain attenuation is evaluated with simulation results.
The aim of this work is to design and build a hardware-in-the-loop simulation (HILS) system for a guided bomb. This paper presents a design scheme, based on the guidance and control system of the guided bomb, and the ...
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ISBN:
(纸本)9781538611715
The aim of this work is to design and build a hardware-in-the-loop simulation (HILS) system for a guided bomb. This paper presents a design scheme, based on the guidance and control system of the guided bomb, and the corresponding test floss of a guided bomb control system to provide a support platform to verify its performance. The design HILS test based on actual conditions is also described. Based on the similarity theory, Nile provide three examples of simulation experiments. The simulation results confirm the effectiveness of the HILS system of the guided bomb.
Performances of hydraulic actuation system (HAS) affect flight quality of the flight control system (FCS) directly. To reach a high performance, HAS must be tested in hardware-in-the-loop simulation (HILS) during its ...
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ISBN:
(纸本)7506278413
Performances of hydraulic actuation system (HAS) affect flight quality of the flight control system (FCS) directly. To reach a high performance, HAS must be tested in hardware-in-the-loop simulation (HILS) during its development stage. This paper designs the actuation controller based on high-speed digital signal processor (DSP), establishes the model of HAS with the hydraulic system simulation tool DSHplus and presents the HILS scheme, designs the interface modules of hardware and software between the HAS model and outer controller. Such factors as discretization error, delay of transmission and disturbances are taken into account in the HILS scheme, which makes the simulation results more accurate and credible. By the aid of the extended CAN module of DSP controller, it is easy to adjust the parameters in real time. Experiments show that the HILS scheme is satisfying and the design of HAS is correct.
To address the challenge of automated performance benchmarking in virtualized cloud infrastructures, an extensible and adaptable framework called CloudBench has been developed to conduct scalable, controllable, and re...
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ISBN:
(纸本)9781467347792;9781467347808
To address the challenge of automated performance benchmarking in virtualized cloud infrastructures, an extensible and adaptable framework called CloudBench has been developed to conduct scalable, controllable, and repeatable experiments in such environments. This paper presents the hardware-in-the-loop simulation technique used in CloudBench, which integrates an efficient discrete-event simulation with the cloud infrastructure under test in a closed feedback control loop. The technique supports the decomposition of complex resource usage patterns and provides a mechanism for statistically multiplexing application requests of varied characteristics to generate realistic and emergent behavior. It also exploits parallelism at multiple levels to improve simulation efficiency, while maintaining temporal and causal relationships with proper synchronization. Our experiments demonstrate that the proposed technique can synthesize complex resource usage behavior for effective cloud performance benchmarking.
Sequential turbocharging system is designed to enlarge the torque of diesel engine in part loaded conditions and reduce the brake specific fuel consumption. hardware-in-the-loop simulation is a technology to design an...
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ISBN:
(纸本)9781424415304
Sequential turbocharging system is designed to enlarge the torque of diesel engine in part loaded conditions and reduce the brake specific fuel consumption. hardware-in-the-loop simulation is a technology to design and test electronic controllers. In order to accelerate the development process and reduce the development cost, hardware-in-the-loop simulation was used to test controller of sequential turbocharging system. The work procedure is as follows: Firstly, real-time simulation model of sequential turbocharged diesel engine was built by the use of NIATLAB/Simulink software. The simulation results were compared with experimental data, it is proved that real-time model is suitable to test the controller. Secondly, real-time model was downloaded into processor of dSPACE platform, and interface models were designed and built in Simulink to simulate signals of. real sensors. Finally, electronic controller of sequential turbocharging system is connected and tested by using of hardware-in-the-loop simulation in dSPACE platform.
Distributed system architectures are gaining attention for their use in modern control systems because they provide a few important advantages over the traditional ones such as a smaller computational load required pe...
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ISBN:
(纸本)9781624106316
Distributed system architectures are gaining attention for their use in modern control systems because they provide a few important advantages over the traditional ones such as a smaller computational load required per component, tolerance to their component failures, and the ease of fixing them. A turbine engine is one of the applications that could benefit from these distributed architectures. Despite the benefits, the distributed architecture requires special attention to its common communication network since it becomes a backbone of the entire system. Although a backup network can be used to improve the overall reliability, it would be beneficial to develop understandings of the system behaviors due to underlying imperfections of the communication network such as noises, delays, and packet losses. To study these variables, the hardware-in-the-loop simulation of the full authority digital engine control system must be constructed in order to execute the developed software on the target hardware. This allows us to differentiate between the simulations of engine physics running on a high-performance computer, and of the control algorithm and software driver implemented on the embedded hardware aimed to be used on the actual turbine engine system. Besides, it allows us to implement a common communication network which is not possible for the case of doing software-in-the-loop. Once the system is separated, we can perform the experiments for this hardware in an extreme environment with high temperature and pressure where they are supposed to be during the actual engine operation. Therefore, this work aims to develop the testbed for performing this concept of hardware-in-the-loop simulation. This paper presents a detailed development of a hardware-in-the-loop testbed for distributed turbine engine control systems. Furthermore, the experiments are conducted in order to make a comparison with the software-in-the-loopsimulation.
You should leave 8 mm of space above the abstract and 10 mm after the abstract. The heading Abstract should be typed in bold 8,5-point Times. The body of the abstract should be typed in normal 8,5 -point Times in a si...
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You should leave 8 mm of space above the abstract and 10 mm after the abstract. The heading Abstract should be typed in bold 8,5-point Times. The body of the abstract should be typed in normal 8,5 -point Times in a single paragraph, immediately following the heading. The text should be set to 1.15 line spacing. The abstract should be centred across the page, indented 15 mm from the left and right page margins and justified. It should not normally exceed 200 words.
Faced with the need to reduce development time and cost, the hardware-in-the-loop (HIL) simulation increasingly proves to be an efficient tool in the automotive industry. It offers the possibility to investigate new e...
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ISBN:
(纸本)0780345304
Faced with the need to reduce development time and cost, the hardware-in-the-loop (HIL) simulation increasingly proves to be an efficient tool in the automotive industry. It offers the possibility to investigate new engine control systems with fewer expensive engine dynamometer experiments and test drives. In the scope of a research collaboration, Daimler Bent and Darmstadt University of Technology are developing a hardware-in-the loop simulator for the investigation of the electronic engine management of the new Mercedes Bent truck engine series 500 and 900. This paper first describes the necessary models for real-time simulation of the subsystems Diesel engine, turbo charger and vehicle. Then the setup of the simulator test bench is introduced and the performance of the simulator is demonstrated by several experimental results.
This paper presents a hardware in the loopsimulation (HITL) for an altitude hold autopilot applied on a fixed-wing unmanned aerial vehicle (UAV). A complete model of the aircraft was generated using MATLAB and Simuli...
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ISBN:
(纸本)9781624106316
This paper presents a hardware in the loopsimulation (HITL) for an altitude hold autopilot applied on a fixed-wing unmanned aerial vehicle (UAV). A complete model of the aircraft was generated using MATLAB and Simulink to which the Total Energy Control System (TECS) was implemented. The HITL provides an artificial environment which is used to represent the aircraft dynamics under flight conditions resembling the real world and investigates the flight controller real-time commands. A comparison between the results of both HITL simulation and software in the loop (SITL) simulation is demonstrated to validate the flight controller performance before actual flight testing.
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