This paper presents an engine-in-the-loop validation of a power management strategy for hybrid electric powertrains that splits the power demanded by driver between the engine and battery depending on the frequency co...
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This paper presents an engine-in-the-loop validation of a power management strategy for hybrid electric powertrains that splits the power demanded by driver between the engine and battery depending on the frequency content. In particular, a series hybrid electric powertrain is considered where the engine is a real 6.4L diesel engine and the rest of the vehicle, including the battery, generator, motors, vehicle dynamics, and driver, is modeled in computer. A networked engine-in-the-loop experiment is considered where the engine and generator constitute one site, and the rest of the system constitutes another site. This networked setup is used to compare the abovementioned power management strategy to a thermostatic strategy as the baseline. For the specific drive cycle considered, the proposed strategy yields about 12% increase in fuel economy, a performance that exceeds the previously reported purely model-based simulation results. In addition, an improvement in battery life can also be expected.
hardware-in-the-loop simulation is today a standard method for testing electronic equipment in the automotive industry. Since electric drives and power electronic devices are more and more important in automotive appl...
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hardware-in-the-loop simulation is today a standard method for testing electronic equipment in the automotive industry. Since electric drives and power electronic devices are more and more important in automotive applications, these kinds of systems have to be integrated into the hardwarein-the-loopsimulation. Power converters and electric drives are used in many different applications in vehicles today (hybrid electric or electric powertrain, electric steering systems, DC-DC converters, etc.). The wide range of applications, topologies, and power levels results in various different approaches and solutions for hardware-in-the-loop testing. This paper gives an overview of hardware-in-the-loop simulation of power electronics and electric drives in the automotive industry. The currently available technologies are described and future challenges are outlined.
The paper deals with the design of the embedded control system for the control of a band saw for metal cutting. The speed control of the cutting process using the hydraulic drive is described in more details.
ISBN:
(纸本)9781467347709
The paper deals with the design of the embedded control system for the control of a band saw for metal cutting. The speed control of the cutting process using the hydraulic drive is described in more details.
Raw slurry blending process is the important process in the alumina production. This process has the complicated characteristics such as the fluctuation of chemical content of the raw materials, variation of the worki...
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Urban rail transit is technology-intensive, comprehensive and complex system *** the acceleration of the process of localization, the method which is now widely taken accredited identification and unit equipment, labo...
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Urban rail transit is technology-intensive, comprehensive and complex system *** the acceleration of the process of localization, the method which is now widely taken accredited identification and unit equipment, laboratory tests after the direct on-line applications has been gradually can not meet the overall requirements of reliability *** this paper, we propose urban rail transit testing simulation platform based on the minimum *** provides reliable technical support for urban rail transit system design and development, inspection and testing, operational analysis.
hardware-in-the-loop (HIL) simulation has been widely used in systems development and algorithm verification in many fields. This paper presents a simulation system by using this method in the field of wireless commun...
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hardware-in-the-loop (HIL) simulation has been widely used in systems development and algorithm verification in many fields. This paper presents a simulation system by using this method in the field of wireless communication. The simulation system is composed of control panel, software module and hardware module. Distribute interactive simulation, collaboration between different subsystems and data security can be accomplished through main control and management. In the part of hardware, we design Ethernet-oriented protocol for module communication and control executive module realized in FPGA (Cyclone IV 4CE115). At last, we introduce energy detection algorithm based on Neyman-pearson criterion which is verified in this system. The result shows that simulation system can accomplish complex simulation by means of data and resource analysis and parameter optimization in real time.
The initial development and results of a comprehensive simulation and testing environment for autonomous air to air refuelling is presented. A thirteen degree of freedom relative motion facility has been installed at ...
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ISBN:
(纸本)9781457705564
The initial development and results of a comprehensive simulation and testing environment for autonomous air to air refuelling is presented. A thirteen degree of freedom relative motion facility has been installed at the University of Bristol to support the design, testing, and validation of measurement systems and autonomous control algorithms through hardware in the loopsimulations. Initially this facility is used to simulate the 'hook-up space' in air to air refuelling. A real-time platform handles the control of the manipulators in synchronisation with streamed data generated by simulated kinematics. An air-to-air refuelling simulation provides the kinematic data of a refuelling probe and drogue, with the feedback loop made by the provision of position measurements from proximity and vision-based sensors. The synthetic environment is real-time and consists of nonlinear models for the receiver and tanker, and accounts for the additional dynamics of the probe and drogue. Data packaging and delay compensation on the network between the real-time platform and the robot controller is addressed in this paper.
This paper proposes a high-level architecture based multi-disciplinary distributed simulation environment for designing mechatronic systems. In the system, commercial off-the-shelf simulators can communicate each othe...
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This paper proposes a high-level architecture based multi-disciplinary distributed simulation environment for designing mechatronic systems. In the system, commercial off-the-shelf simulators can communicate each other via real-time-infrastructure to realize software-in-the-loopsimulation. Moreover, hardware prototypes can also participate in a part of the distributed simulation environment which enable us hardware-in-the-loop simulation. Effectiveness was verified by applying the environment to mechatronic system design of an automotive power-window and an omni-directional electric wheel chair.
The deployment of IEC61850 standard in the world of substation automation system brings to the use of specific strategies for architecture testing. To validate EEC61850 architecture, the first step consists in validat...
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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 al...
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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-loopsimulations 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.
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