hardware-In-the-loop (HIL) simulations are more and more used to assess performances of electric drives. Software simulations lead to develop control of the studied system. In this case generally a lot of simplificati...
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ISBN:
(纸本)9781424416653
hardware-In-the-loop (HIL) simulations are more and more used to assess performances of electric drives. Software simulations lead to develop control of the studied system. In this case generally a lot of simplifications are assumed to reduce the computation time. Before a real-time implementation of the control, HIL simulations could be a very useful intermediary step. Thus a hardware device is introduced in the loop in order to take its real constraints into account. In this paper, three different kinds of HIL simulation are suggested: signal level, power level, and mechanical level. A example is given for the traction system of an electric scooter.
Designing of fuzzy if-then rules and tuning of membership function are difficult problems because of troublesome characteristics of engine idle speed such as severe process nonlinearities, variable time delay, time va...
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ISBN:
(纸本)9781424421138
Designing of fuzzy if-then rules and tuning of membership function are difficult problems because of troublesome characteristics of engine idle speed such as severe process nonlinearities, variable time delay, time variations and unobservable system states. To solve this key issue, an electronic throttle idle speed control strategy based on adaptive network-based fuzzy inference system (ANFIS) is proposed. The simulation model of idle speed controller and engine is built with the tool of MATLAB/SIMULINK. The validity of the control scheme is real-time simulation tested on the electronic throttle hardware-in-the-loop simulation system based on MATLAB/xPC Target. The real-time simulation results show that-the idle speed control strategy based on ANFIS has relatively little static errors with better dynamical performance and meet the stability requirements of engine idle speed control. hardware-in-the-loop simulation system based on xPC Target provides a friendly experiment environment for designing and testing of idle speed controller, and the development period is shortened.
The quadcopter as one of the UAV (Unmanned aerial vehicles) is inherently unstable, and has six degrees of freedom (6 DOF), while the number of control inputs is four. The present work presents a sequential methodolog...
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The quadcopter as one of the UAV (Unmanned aerial vehicles) is inherently unstable, and has six degrees of freedom (6 DOF), while the number of control inputs is four. The present work presents a sequential methodology to analyze and explain the control mechanism of quadcopter-UAV in academic and research institutions. This methodology includes simulation, modelling, attitude control, hardware in-the loop (HIL) testing methodology, performance evaluation, and an experimental testing platform. Coordinate systems, kinematics, and dynamics systems are derived in great detail. Then, a real-time test platform is designed to verify system stability in a safe environment. (HIL) simulation was performed by the Pixhawk flight controller board interfaced with the Mission Planner platform. The numerical results include the control parameters of the quadcopter position (phi, theta, psi), and the translation values. The simulation results showed high and reliable performance both at the desired roll, pitch, and yaw angles as well as at the quadcopter position in the coordinate axes. Furthermore, the results of the real-time experiments (indoor/outdoor flight tests) have successfully demonstrated good stability and high response. Based on the methodology used in this research, the cost and risk of real-time flight experiments for UAVs have been reduced.
The paper concerns modern approaches towards minimising the vibration level during the high speed milling process of flat flexible details. Dynamic analysis of the milling process is performed and dynamics of non-stat...
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The paper concerns modern approaches towards minimising the vibration level during the high speed milling process of flat flexible details. Dynamic analysis of the milling process is performed and dynamics of non-stationary controlled system in hybrid coordinates is described. On the basis of the process dynamics, as well as on the energy performance index, suitable control law is derived in order to reduce vibration level. This control law is applied for active force generation by the piezoceramic plate actuator. The implementation issues, which concern a proposed method of vibration surveillance, are described. At first, in order to predict and obtain good efficiency of vibration surveillance within a wide range of spindle speeds, hardware-in-the-loop simulation (HILS), as a mean of mechatronic design, is applied. Subsequently, the predicted results are verified during the real cutting experiment. The latter ones evidenced good performance in the scope of vibration reduction. (C) 2014 Elsevier Ltd. All rights reserved.
To ensure the effectiveness of the RF（Radio Frequency） guided HILS（hardware-in-the-loop simulation） system,the credibility evaluation was *** present,most of the methods were applied in the case of the simulation ...
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ISBN:
(纸本)9781538629185
To ensure the effectiveness of the RF（Radio Frequency） guided HILS（hardware-in-the-loop simulation） system,the credibility evaluation was *** present,most of the methods were applied in the case of the simulation system input being consistent with the real system input,which is difficult to achieve in some subsystem of the RF guided HILS *** this paper,the relative complete system reliability evaluation index system was *** were classified,for different categories of subsystem,corresponding reliability assessment methods were *** particular,reliability evaluation methods based on performance level were put forward,when certain subsystems cannot be evaluated by consistency analysis methods.A simple example was given to show the evaluation process.
Adopting test bench to do research on HEV is efficient at low costs, but in traditional test bench, the real engine is used to do lots of experiments, which produces a lot of tail gas, and the use of an engine is limi...
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ISBN:
(纸本)9781479942398
Adopting test bench to do research on HEV is efficient at low costs, but in traditional test bench, the real engine is used to do lots of experiments, which produces a lot of tail gas, and the use of an engine is limited while safety is not high. This paper designs an engine emulation system based on the Electric Variable Transmission (EVT) simulation platform for the HEV power train. The high controllability motor is used instead of the real engine to provide power according to characteristics of the engine. An engine simulation model is built in Simulink, including engine dynamic torque model, engine fuel & efficiency model, engine control system model and input control model. To verify the designed system, engine emulation experiments are performed finally, which show that this engine emulation system can emulate the engine, including dynamical torque characteristic and fuel & efficiency. Therefore, this paper provides a new method to the research of test bench of vehicle.
In this paper we present a recently developed speed advisory system for ITS applications. A real vehicle embedded in a large scale SUMO simulation is used to demonstrate the efficacy of such a system.
ISBN:
(纸本)9781479924912
In this paper we present a recently developed speed advisory system for ITS applications. A real vehicle embedded in a large scale SUMO simulation is used to demonstrate the efficacy of such a system.
In order to build the aero piston engine model which is real-time and accurate enough to operating conditions of the real engine for hardware in the loopsimulation, the mean value model is studied. Firstly, the air-i...
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In order to build the aero piston engine model which is real-time and accurate enough to operating conditions of the real engine for hardware in the loopsimulation, the mean value model is studied. Firstly, the air-inlet model, the fuel model and the power-output model are established separately. Then, these sub models are combined and verified in MATLAB/SIMULINK. The results show that the model could reflect the steady-state and dynamic performance of aero engine, the errors between the simulation results and the bench test data are within the acceptable range. The model could be applied to verify the logic performance and control strategy of controller in the hardware-in-the-loop (HIL) simulation.
This paper details the design and development of a robotic hardware-in-the-loop simulation platform that can be used for rapid-prototyping industrial manipulators. The architecture of the proposed platform has been pr...
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ISBN:
(纸本)9781424403417
This paper details the design and development of a robotic hardware-in-the-loop simulation platform that can be used for rapid-prototyping industrial manipulators. The architecture of the proposed platform has been presented in [1]. Potential benefits of such a platform include allowing concurrent development of hardware and control system components and providing a reusable platform for reconfigurable manipulators through a generic and modular structure. Some preliminary tests on the platform have also been discussed in the paper.
The electronics responsible for the comfort and passive safety systems in the new Opel Vectra involve a network of numerous electronic control units (ECU) from different manufacturers. Testing the ECU network is a par...
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