In recent years, there are many studies on controller of electronic parking brake (EPB). These studies develop EPB controller based on vehicle dynamic equation. However, few studies focus on the identification of driv...
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The X-by-wire technology, replacing mechanical components with electrical components, is essential to realizing an intelligent vehicle. The technology has many advantages including component reduction, design freedom ...
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ISBN:
(纸本)9788995003848
The X-by-wire technology, replacing mechanical components with electrical components, is essential to realizing an intelligent vehicle. The technology has many advantages including component reduction, design freedom increase and safety improvement. Brake-by-wire replaces hydraulic brake systems with electrical components. As a part of the x-by-wire technology, the brake-by-wire technology has been actively researched. The technology has a great advantage of solving manufacturing, maintenance and environmental problems associated with hydraulic systems. However, due to absence of mechanical or hydraulic back-up, the brake-by-wire system must be highly reliable and fault-tolerant This requires environment in which the system can be developed and tested safely, before applying to an actual vehicle. The environment must be flexible in developing and testing various algorithms, and be faithful in reproducing the actual system. This study thus develops a brake-by-wire hardware-in-the-loop simulation system that can serve as the environment mentioned above. The electro-mechanical brake type has been adopted in this study for developing the system. A procedure to develop the system was defined and followed to design a brake actuator, select a motor, build hardware components, set up the whole system, and test for performance evaluation. A preliminary test of the developed system shows its effectiveness. However, the test also shows that the response speed of the system should improve. A follow-up study will be conducted to improve system response, develop a full-scale system, and integrate with a steer-by-wire system.
This work builds upon our previous work, where a swarm robot called a Groundscout was tested for its emergent behavior(s) using a system of systems framework based on discrete-event simulation and XML-based hardware i...
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In order to solve the underdamping problem for a rolling missile, at first, design the lateral acceleration autopilot;secondly, study the projection of control command and control strategy called pulse width modulatio...
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This paper presents a new development in the field of design process and testing of motor drives, for hardware-in-the-loop (HIL) applications. It consists of implementing the Finite Element (FE) Method applied to elec...
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ISBN:
(纸本)9781424404964
This paper presents a new development in the field of design process and testing of motor drives, for hardware-in-the-loop (HIL) applications. It consists of implementing the Finite Element (FE) Method applied to electric motors on a real-time simulator;coupled with circuit simulation, this enables accurate real-time simulation of the complete motor drive, including the inverter and the motor. The paper describes the integration of FE-based motor model generated by JMAG (R) software, with the high-end real-time RT-LAB (R) simulator. The complete solution consists of combining accurate FE-based motor model, with inverter model, including important switching parameters, all constructed in the Simulink (R) environment, and simulated on PC-based RT-LAB simulation platform, using ultra-fast processors and FPGA-based inputs/outputs (I/O) boards. By connecting the real-time simulator to an external controller under test, this allows high fidelity HIL simulation of motor drives and enables the design engineers to test the system and the controller with a very accurate, FE-based motor model running in real-time.
Aiming to solve the inefficiency problem of the time advance when HLA-based distributed simulation is applied to large-scale hardware-in-the-loop real-time simulation, we propose a conservative time management model w...
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A hardware-In-the-loop (HIL) simulation of a wind energy conversion system has been developed using Energetic Macroscopic Representation. Wind, turbine and mechanical power train are emulated by controlled DC drive to...
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The inherent non-idealities, especially the time delay, in the interface of a PHIL simulation may lead to large simulation errors or even instabilities. Therefore, it is extremely important to have an effective way to...
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ISBN:
(纸本)9781565553163
The inherent non-idealities, especially the time delay, in the interface of a PHIL simulation may lead to large simulation errors or even instabilities. Therefore, it is extremely important to have an effective way to evaluate the simulation accuracy in order to justify the reliability of a PHIL experiment. A generalized metric defining the error functions from two types of PHIL interface perturbations is proposed in this paper. Two simulation examples are performed to show the validity of the proposed method.
This paper presents a Field Programmable Gate Array (FPGA) based real-time digital simulator for power electronic apparatus based on an realistic device-level behavioral model. A 3-level 12-pulse Voltage Source Conver...
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ISBN:
(纸本)9781457710001
This paper presents a Field Programmable Gate Array (FPGA) based real-time digital simulator for power electronic apparatus based on an realistic device-level behavioral model. A 3-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 12.5ns allowing an realistic representation of the IGBT nonlinear switching characteristics and power losses. The simulator also models a squirrel-cage induction machine, a direct field-oriented control system, and a pulse-width modulator to achieve the real-time simulation of the complete drive system. All the models have been implemented using VHDL. Real-time simulation results have been validated using measured device-level IGBT characteristics.
The rapid control prototyping(RCP) system that based on Simulink model and RTX real time system was designed. The RCP system can rapidly convert the Simulink model into the RTX real time model and realize: the automat...
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The rapid control prototyping(RCP) system that based on Simulink model and RTX real time system was designed. The RCP system can rapidly convert the Simulink model into the RTX real time model and realize: the automatic compilation and downloading of the Simulink model, the on-line modification of simulation parameters, real time storage of simulation data, automatic distribution simulation, configuration file administration. The simulation results, given in Fig. 8 and Table 1, show preliminarily that the RCP system designed by us is not only reliable but also gives good precision.
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