Urban regional traffic signal control and optimization is an important means to alleviate urban traffic congestion, and effectiveness evaluation is an important part of traffic signal optimization. The traditional tra...
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ISBN:
(纸本)9781450389532
Urban regional traffic signal control and optimization is an important means to alleviate urban traffic congestion, and effectiveness evaluation is an important part of traffic signal optimization. The traditional traffic simulation softwares are generally evaluated by the built-in signal control module, which is out of connection with the actual signal control system and the accuracy of the evaluation is not high. In order to enhance the effectiveness of evaluation in connection with simulation software and signal control system, this paper presents an urban road network traffic control platform based on the hardware-in-loopsimulation. The logical framework, function architecture, central system and controller interface etc. of hardware and software modules of the platform are designed. The arterial coordination control algorithm and regional cooperative control algorithm are integrated. The example analysis shows that the platform builds the bridge of the traffic simulation software and the traffic signal control system, and it can effectively evaluate the traffic control effect of the road network. Based on this platform, effectiveness evaluation of the regional traffic signal control, improvement for control algorithms and signal optimization can be carried out.
Oriented the design procedures of bus-based automotive body control system, rules are used to describe the control intention of prototype model first. This paper represents the approach of modeling bus-based automotiv...
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This work focuses on the assessment of safety and energy performance of an ACC-equipped electric vehicle under different driving conditions. Variability in vehicle dynamics and ACC settings introduces complexities in ...
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ISBN:
(数字)9798350355185
ISBN:
(纸本)9798350355192
This work focuses on the assessment of safety and energy performance of an ACC-equipped electric vehicle under different driving conditions. Variability in vehicle dynamics and ACC settings introduces complexities in analysing the performance of the considered system. To address this challenge, an evaluation methodology that integrates stochastic simulation with the PAWN sensitivity technique is employed. This approach enables the evaluation of the impact of variations in driving conditions on both safety and energy efficiency. The extensive analysis denotes and quantifies the effect of driving condition variables on the performance of the vehicle. Results also prove that different goals (safety and consumption) are affected by different variables. The outcome of such operation is crucial for optimizing ACC system design and operation to enhance both safety and energy efficiency in electric vehicles.
Low-cost DC motor system kits are used by undergraduate students to investigate the basics of automatic controls and enhance their ability to apply classroom theory to real-world applications utilizing hardware-In-the...
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ISBN:
(数字)9781538682661
ISBN:
(纸本)9781538682678
Low-cost DC motor system kits are used by undergraduate students to investigate the basics of automatic controls and enhance their ability to apply classroom theory to real-world applications utilizing hardware-In-the-loop (HIL) simulation. The kits provide students with a range of learning experiences, from controller design to reduced order model verification. Additionally, the low-cost kits allow the students the ability to work on an open-ended controller design problem outside of the laboratory. This manuscript presents (1) the DC motor system bill of materials, (2) a pedagogical approach to introducing automatic controls to undergraduate students utilizing HIL simulations, (3) experimentally determined motor parameters for motors used in the kit, (4) a reduced order model for a motor used in the kit, and (5) results contrasting real-world performance of the DC motor used in the kits with that from simulated models based on experimental motor parameters.
simulation platform was designed and developed for an intelligent vehicle with camera, including the control algorithm simulation in Matlab, three-dimensional simulation based on Microsoft robotics developer studio(MR...
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simulation platform was designed and developed for an intelligent vehicle with camera, including the control algorithm simulation in Matlab, three-dimensional simulation based on Microsoft robotics developer studio(MRDS) and the hardware-in-the-loop simulation. The debugging efficiency was improved by transplanting the control algorithm developed in Matlab into the MRDS where the more realistic models and environment were used to debug control algorithm and analog tunable parameters. The hardware-in-the-loop simulation was realized by introducing the underlying hardware of intelligent vehicle model. According to the improved algorithm in MRDS, changed model parameters in Matlab. By downloading the underlying code and parameters obtained in real-time workshop to the intelligent vehicle model and running, the users can observe and record the running status and related parameters of the vehicle in the principal computer in real time, then the interactive debugging between software simulation and hardwaresimulation was realized.
The attitude of underwater intelligent munition is difficult to be determined because its movement on near surface is subject to wind, wave and ocean current disturbance. An ocean wave model was established in the mat...
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The attitude of underwater intelligent munition is difficult to be determined because its movement on near surface is subject to wind, wave and ocean current disturbance. An ocean wave model was established in the mathematical and hardware-in-the-loop simulation stages. An attitude determination algorithm was given based on magnetic, angular rate, and gravity (MARG) sensors combining with the ocean wave model. The mathematical and hardware-in-the-loop simulation tests of the underwater intelligent munitions were carried out. The test results show that the attitude determination methods discussed in this paper can effectively resist the complex interference. The results provide a reference for the design of the attitude control system and the shipping test of the underwater intelligent munitions.
UniSim is a graphic tool that can be used to develop and validate portable automation software, which fully complies with the IEC 61131-3 standard. UniSim is based on a graphical editor and on a simulation engine whic...
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UniSim is a graphic tool that can be used to develop and validate portable automation software, which fully complies with the IEC 61131-3 standard. UniSim is based on a graphical editor and on a simulation engine which allows to perform off-line validation of the automation software. Its simulation engine can also be interfaced with off-the-shelf I/O boards, in order to fast prototype automation systems by using a Personal Computer. hardware-in-the-loop validation can be performed interfacing the prototype with the real plant or with an emulator. Furthermore, UniSim adopts the new XML Formats for IEC 61131-3, which provides an open interface for data exchange among different systems. Thanks to this choice the code developed with UniSim can be easily ported among different commercial platforms, increasing software reusability. Although the current release of UniSim is a work in progress version, it is already available at [1] and it can be effectively used to develop small and medium automation size projects.
The tailsitter aircraft merges the endurance and speed of fixed-wing aircraft with the flexibility and VTOL abilities of rotorcraft. Because of the requirement to be functional at a full range of attitudes, quaternion...
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ISBN:
(纸本)9781479923779
The tailsitter aircraft merges the endurance and speed of fixed-wing aircraft with the flexibility and VTOL abilities of rotorcraft. Because of the requirement to be functional at a full range of attitudes, quaternions are typically employed to calculate attitude error. Attitude control is then accomplished by using the vector component of the error quaternion to drive flight control surfaces. This paper demonstrates that this method of driving the flight control surfaces can be suboptimal for tailsitter type aircraft and can lead to undesired vehicle movement. An alternate method of calculating attitude error called resolved tilt-twist is improved and validated. The resolved-tilt twist method is implemented in hardware and hardware-in-loopsimulation results are presented.
Introduction In this paper, we review state-of-the-art solvers and techniques applicable to HIL simulation of power systems, power electronics and motor drives.
ISBN:
(纸本)9781479901159
Introduction In this paper, we review state-of-the-art solvers and techniques applicable to HIL simulation of power systems, power electronics and motor drives.
In this paper, design and analysis of interior permanent magnet synchronous motor for electric vehicle bus propulsion is performed based on Finite Element Method. As the increase of the advanced application which requ...
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ISBN:
(纸本)9781479927067
In this paper, design and analysis of interior permanent magnet synchronous motor for electric vehicle bus propulsion is performed based on Finite Element Method. As the increase of the advanced application which requires precise control, the inverter is regarded as requisite for controlling electric machines. In addition multi-domain co-simulation is important to consider the inter-linking effect of the system as well as the conventional sinusoidal input analysis to investigate the characteristics of electric machines, specifically. Therefore, Multi-domain co-simulation is performed to consider the effect of inverter current, containing time harmonics, to the characteristics of interior permanent magnet synchronous motor in system circumstance. Simulated result is validated by comparing it with experimental result. Lastly, virtual driving test using hardware-in-the-loop simulation is performed with co-simulated data to verify the reliability of multi-domain co-simulation model in virtual driving system.
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