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SAE 2016 World Congress and Exhibition

作者： Qiao, Zhang Deng, Weiwen Wu, Jian Ju, Feng Li, Jingshan Jilin University State Key Lab of Automotive Simulation and Control 130025 China

This paper describes a novel power management control strategy of battery and supercapacitor hybrid energy storage system to improve system efficiency and battery lifetime. In the presented research, the high and low frequency power demand in the load is separated by a Haar wavelet transform algorithm to overcome the problem of battery overload work and associated degeneration in battery lifetime resulting from an ineffective distribution between battery and supercapacitor. The purpose of frequency distribution is that the supercapacitor is used to share high frequency power components of load power demand to smooth the power demand applied to battery. However, the sole frequency control often fails to realize the optimal utilization of supercapacitor because of the uncertain variation in the driving cycle. Therefore, the power demand distributed to supercapacitor is designed to be changeable along with the variation of its voltage, which is another important advantage of the proposed control strategy. The idea is to utilize different decomposition levels of wavelet transform algorithm, which is adjusted by using a fuzzy-logic controller to reduce the adverse influence of both high frequency transition and peak power from the load power demand on battery system. Finally, simulation is conducted to verify the effectiveness of the proposed strategy. © Copyright 2016 SAE International.

关键词： Supercapacitor

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The Research of the Insulation Coordination of the Transmission Lines with Parallel Gaps in More Thunderstorm Region

The Research of the Insulation Coordination of the Transmiss...

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2017 International Conference on Mechanical and Mechatronics Engineering(ICMME2017)

作者： Zhu-wen OU Jin-bo WU Hong-jun ZHEN Zhan-qing YU Jin-liang HE Qingyuan Power Supply Bureau of Guangdong Power Grid Co. LTD State Key Lab.of Control and Simulation of Power Systems and Generation Equipment Department of Electrical EngineeringTsinghua University

Parallel gaps,as a new mode of "channel" type lightning protection,can do it with the sub insulator arc distance to effectively protect the insulator,but the corresponding line tripping rate will be affected because of this;Development method based on the leader in this paper the calculation method of the lightning path,the typical used tower of guangzhou trip rate change after the application of parallel gap situation has carried on the analysis,got a short distance and adopt reasonable reinforced insulation,the trip rates did not rise significantly.

关键词： Parallel gaps A lightning strike tripping rate Insulation coordination

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The Research of Asymmetric Parallel Gaps in EHV Transmission Lines

The Research of Asymmetric Parallel Gaps in EHV Transmission...

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2017 2nd International Conference on Electrical and Electronics: Techniques and Applications（EETA2017）

作者： Jin-bo WU Zhan-qing YU Hong-jun ZHEN Chao SU Rong ZENG Jin-liang HE State Key Lab.of Control and Simulation of Power Systems and Generation Equipment Department of Electrical Engineering Tsinghua University Electric Power Science Institute of Yunnan Power Grid Co. Ltd

As a new kind of lightning protection, parallel gaps have simple structure, easy installation, good economy, and many other advantages. The traditional parallel gap due to the large short distance, can lead to lightning trip-out rate increases. Based on arc movement characteristics this paper presents a design of new type of parallel gaps and the analysis of the surface field strength, and the verification test, design a new kind of parallel gap are obtained.

关键词： Arc movement Parallel gaps Surface electrical field

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Development of low cost hardware-in-the-loop test system and a case study for electric vehicle controller

Development of low cost hardware-in-the-loop test system and...

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International Conference on Applied System Innovation (ICASI)

作者： Jing Lin Xia Qinghua Diao Wei Sun Zengzhen Xing Xinmei Yuan Tingting Dong State Key Lab.of Automotive Simulation and Control Jilin University Changchun Jilin China Geely Automobile Institute Hangzhou Zhejiang China

ISBN: (纸本)9781467398893

In recent years, hardware-in-the-loop (HIL) test becomes an effective approach in the design of automotive electronics. One issue of HIL system is that most commercial HIL products are very expensive. With careful analysis of the ECU functionality and reasonable use of the hardware resources, it is possible to realize a HIL system to fully satisfy the test requirements with much lower cost in many cases. In this paper, the possibilities to reduce the cost of current HIL systems are discussed. As a case study, the development of a low cost HIL system for a pure electric vehicle controller is presented, the modeling of the vehicle is introduced and the hardware and software implementations are given. Finally, the feasibility of the proposed HIL system is validated by experimental results.

关键词： Decision support systems control systems Industrial electronics

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An Economic Evaluation of Electric Vehicle Charging Infrastructure in Public Places in China

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IOP Conference Series: Earth and Environmental Science 2018年第1期168卷

作者： Xueqi Huang Xiao Li Xinmei Yuan Bo He Juan Li State Key Lab. of Automotive Simulation and Control Jilin University Changchun China Department of Power Grid Development State Grid Energy Research Institute Beijing China State Grid Tianjin Electric Power Economic Technology Research Institute State Grid Tianjin Electric Power Company Tianjin China

The electric vehicle market has witnessed a big growth spurt as a result of the promotion of the transportation electrification in the global. Among electric vehicles, electric passenger cars are the most promising fleet to achieve the global climate target in the next decades, which will lead to a vast potential public charging market. Therefore, evaluating the economy of operating the charging infrastructure from the operator's perspective is especially required. The paper aims at providing an economic evaluation of charging infrastructure in public places in China. In the proposed method, the initial investment cost, the subsidy, the operating revenue and the operating cost are all modeled in detail. Using the proposed model, two scenarios representing the electric vehicle charging in the work place and in the fast charging station are assumed, and the cost and revenue of charging operators are calculated and compared. It is shown that under our assumption the payback period of the charging infrastructure in the work place is much shorter than that of fast charging station. Because the calculated payback period of fast charging station is more than ten years, current fast charging stations are unlikely to profit, and the promotion of the fast charging stations requires further policy support and smart grid technology development.

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Diesel Engine SCR control: Current Development and Future Challenges

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Emission control Science and Technology 2015年第2期1卷 121-133页

作者： Yuan, Xinmei Liu, Hongqi Gao, Ying State Key Lab. of Automotive Simulation and Control Jilin University ChangchunJilin130025 China

To meet increasingly stringent emission legislations, selective catalytic reduction (SCR) becomes an essential aftertreatment technique. This paper presents a comprehensive overview of the current development and future challenges of SCR control technologies. In this paper, SCR system hardware configurations are introduced, modeling and calibration of the SCR converter are provided, and current control strategies are summarized and reviewed. Finally, primary areas driving the future of SCR control research are discussed. © 2015, Springer SIP, AG.

关键词： Selective catalytic reduction

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Camera Modeling for Vision-Based ADAS

Camera Modeling for Vision-Based ADAS

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SAE 2015 World Congress and Exhibition

作者： Wang, Ying Wang, Ye Qu, You Zhang, Sumin Deng, Weiwen State Key Lab of Automotive Simulation and Control Jilin University 130012 China College of Computer Science and Technology Jilin University 130012 China

Vision-based Advanced Driver Assistance Systems has achieved rapid growth in recent years. Since vehicle field testing under various driving scenarios can be costly, tedious, unrepeatable, and often dangerous, simulation has thus become an effective means that reduces or partially replaces the conventional field testing in the early development stage. However, most of the commercial tools are lack of elaborate lens/sensor models for the vehicle mounted cameras. This paper presents the system-based camera modeling method integrated virtual environment for vision-based ADAS design, development and testing. We present how to simulate two types of cameras with virtual 3D models and graphic render: Pinhole camera and Fisheye camera. We also give out an application named Envelope based on pinhole camera model which refers to the coverage of Field-of-Views (FOVs) of one or more cameras projected to a specific plane. Some preliminary simulation results demonstrate the correctness and effectiveness of the system-based camera modeling method. In the future, other camera's effects could be simulated based on this modeling framework. Copyright © 2015 SAE International.

关键词： Pinhole cameras

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Nonlinear Model Predictive control of Blowout Tire Vehicles and Its Map-based Implementation

Nonlinear Model Predictive Control of Blowout Tire Vehicles ...

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第三十四届中国控制会议

作者： Fei Wang Hongyan Guo Hong Chen State Key Lab. of Automotive Simulation & Control Jilin Univ. Jilin China

ISBN: (纸本)9781467374439

A blowout is a rapid loss of inflation pressure of a pneumatic tire. In order to reduce the fatal damage of tire blowout during vehicle operation, a differential flatness based 3 degrees of freedom (DOF) vehicle dynamics model with a deflated tire is established. The model predictive controller designed based on this method can guarantee that the vehicle after a tire blowout can drive safely until it comes to a complete stop. Due to the heavily online computational burden, it is actually difficult to implement nonlinear model predictive control (NMPC) scheme in the quick-response control system. In this paper, a novel control strategy is proposed to solve this problem and applied to the control of vehicles after a tire blowout. The involved optimization problem of NMPC is solved off-line in the operating points which then are recorded into a control map. simulation results are provided to verify the effectiveness of the proposed control strategy.

关键词： Calibration of Maps NMPC Tire Blowout nonlinear model predictive control control strategy vehicle Vehicle operations inflation pressure FAST-RESPONSE PNEUMATIC TIRE

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MPC-Based Regional Path Tracking controller Design for Autonomous Ground Vehicles

MPC-Based Regional Path Tracking Controller Design for Auton...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Ru Yu Hongyan Guo Zhenping Sun Hong Chen State Key Laboratory of Automotive Simulation and Control Jilin University College of Mechatronics and Automation National University of Defense Technology Changsha China State Key Lab. of Automotive Simulation & Control Jilin Univ. Coll. of Commun. Eng. China

ISBN: (纸本)9781479986989

Path tracking issues of autonomous ground vehicles (AGVs) have attracted more attention in recent years with the intelligent and electrified development of vehicles. In order to make AGVs path tracking problem more flexible, regional path tracking problem is discussed in this manuscript based on model predictive control (MPC) method, where the front wheel steering angle is regarded as the control variable. The feasible region for AGVs running is determined first according to the detected road boundaries. In the following, AGVs running in this region is considered using kinematic model. Then, in order to make the actual trajectory of AGVs keep in the region and satisfy the safety requirements, MPC method is employed to design path tracking controller considering the vehicle dynamics, the actuator and state constraints. In order to verify the effectiveness of the proposed algorithm, simulations under various test conditions are carried out using a high fidelity vehicle simulator veDYNA, where the Hongqi vehicle HQ430 parameters are matched. The results obtained from the simulation illustrate that the proposed algorithm obtains good performance in dealing with the regional path tracking problem.

关键词： Roads Wheels Kinematics Vehicle dynamics Land vehicles Tires

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Research on intelligent self-learning system for the electro-pneumatic automated manual transmission gear position

Research on intelligent self-learning system for the electro...

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SAE 2014 World Congress and Exhibition

作者： Sun, Shaohua Li, Shunbo Fu, Yao Yang, Cheng State Key Lab of Automotive Simulation Control Jilin Univ China

In the electro-pneumatic automated mechanical transmission (AMT) system, the manufacturing, assembly, wear, replacement and other issues often lead to gear position change and some differences in various gears of transmission, which reduces the success rate and even results in abnormally working. To solve these problems, based on the intelligent control theories of fuzzy PI control, this research developed an intelligent self-learning system for the AMT gear position. This system contains the position initialization module after assembling (offline module) and the position correction module in use (online module). The system can automatically recognize gear position deviation and actively correct it, which improves the robustness of shift actuator. The precise control of shift actuator is the key of this self-learning system. However, due to the compressibility of air and uncertainty of external flexible dynamics, it is difficult to establish accurate models of the system in each stage, so conventional PID control methods have been unable to accurately control the position of shift cylinder. In this study, the flow equation of shift valve is established based on analysis of the operating principles of electronically controlled pneumatic AMT, and then a fuzzy PI control strategy is developed according to fuzzy control theory. With the platform of pure electric car equipped electrically controlled pneumatic AMT, a series of field vehicle tests were carried out and the results showed that the development of intelligent AMT shift position self-learning system can effectively achieve self-learning of shift position accurately with good consistency and higher efficiency. Copyright © 2014 SAE International.

关键词： Fuzzy control

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