检索结果-内蒙古大学图书馆

Development and experimental validation of an automatic parking brake system with less driveline sensor

Science China(Technological Sciences) 2018年第11期61卷 1628-1641页

作者： WANG JunNian SUN NaNa YAN JiaWei SONG DaFeng WANG QingNian State Key Laboratory of Automotive Simulation and Control Jilin University Chassis Systems Control Division Bosch Automotive Products (Suzhou) Co. Ltd.

Electrical Parking Brake(EPB) has been popularly used in passenger cars over the past ten years. With the help of the several kinds of sensors mounted in driveline for the total traction force estimation, EPB can obtain well performance on drive-off assistance and automatic parking brake. Furthermore, its AUTOHOLD function can realize automatic parking brake and ease the driver. However, given that the higher cost and complexity of this traction force estimation method based on the driveline sensors and its slower response resulted by applying maximum parking force for safety parking while driving off, a novel automatic parking brake system without these transmission system sensors, such as clutch position sensor for the cars with manual transmission, is proposed in this paper, including its control scheme and application test. Firstly, the indirect judgement method of the appropriate moment to release the parking brake, which is based on the car pitch moment when it drives off, is introduced according to the force analysis when the car is ready to go. Then a pragmatic mass estimation method for proper brake force calculation is proposed for improving the drive-off performance. In addition, for the convenience and drivability of skillful driver, as well as the system reliability, a mechanical redundant design to reserve the conventional handbrake lever is also described. Finally, various simulations based on CarSim software and road tests are performed to validate its effectiveness.

关键词： automatic parking brake mass estimation hill-start assist releasing time drive-off tilt angle redundant design

来源：评论

学校读者我要写书评

暂无评论

Diesel Engine SCR control: Current Development and Future Challenges

引用

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

来源：评论

学校读者我要写书评

暂无评论

Publisher Erratum: Design of energy-saving driving strategy based on proximal policy optimization considering urban transport information

引用

control Theory and Technology 2025年 1-1页

作者： Liu, Qifang Sun, Dazhen Chen, Haowen Li, Dongzi Wang, Ping Department of Control Science and Engineering Jilin University Changchun China State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

来源：评论

学校读者我要写书评

暂无评论

Effect of short basalt fibers on durability, mechanical properties, and thermal properties of polylactic acid composites

引用

Polymers from Renewable Resources 2019年第1-3期10卷 45-59页

作者： Han, Lu Ma, Fangwu Chen, Shixian Pu, Yongfeng State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

The effect of basalt fiber (BF) content on the properties of BF-reinforced polylactic acid (PLA) composites was investigated. Composites with 10, 20, 30, 40, 50, and 60 wt% BF were fabricated. The results revealed that (1) the mechanical properties improved with increasing BF content. The maximum tensile strength and modulus of the composites (i.e. 140 and 5050 MPa, respectively) occurred at a BF content of 50%. The maximum flexural strength, that is, 159.5 MPa was two times larger than that of the pure PLA and was obtained at a BF content of 40%. However, the mechanical properties deteriorated at BF contents >50%. (2) BF can stop storage modulus loss and are effective in improving the crystallinity, as revealed by dynamic mechanical analysis and differential scanning calorimetry measurements. The crystallinity improved from 34.6% to 54.6% with BF addition. (3) After the accelerated aging test, pure PLA was too weak for testing. However, high values of the tensile modulus (i.e. 60% that of the nonaged samples) were maintained by the BF-reinforced PLA. This resulted possibly from the high crystallinity of the PLA composites. Therefore, suitable amounts of BF as reinforcements can yield improvements in the performance of PLA composites. © The Author(s) 2019.

关键词： Durability

来源：评论

学校读者我要写书评

暂无评论

Field programmable gate array/system on a programmable chip-based implementation of model predictive controller

引用

IET control Theory and Applications 2012年第8期6卷 1055-1063页

作者： Chen, H. Xu, F. Xi, Y. State Key Laboratory of Automotive Simulation and Control Jilin University China China

To improve the on-line computational performance of model predictive control (MPC) for fast systems and/or embedded systems, this study proposes a novel scheme for the MPC controller implementation based on field programmable gate array (FPGA) and system on a programmable chip (SOPC) technology. A Nios II processor clocked at 150 MHz is embedded into the FPGA chip. A C/C++ model of the MPC algorithm which is run in the Nios II processor is created. The dual method is adopted to solve the quadratic programming (QP) problem. Based on FPGA and dSPACE®, a rapid prototyping platform is introduced to test and verify the function and computational performance of the MPC controller. Real-time simulation results of controlling a throttle model show that a reasonable size of constrained MPC controller can be implemented on the used RCIII FPGA board. © 2012 The Institution of Engineering and Technology.

关键词： Model predictive control

来源：评论

学校读者我要写书评

暂无评论

EVT Logistics Vehicle Cost Recovery Cycle and Economic Analysis

引用

IFAC-PapersOnLine 2018年第31期51卷 415-422页

作者： Zeng, Xiaohua Li, Hongcheng Song, Dafeng Yang, Nannan Wang, Zhenwei State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

Hybrid vehicles are favored by the market because of their good economic. Therefore, the cycle of cost recovery and its economy have become one of the most concerned issues in the development process. This paper analyzes the economic impact factors of logistics vehicles using electronic continuously variable transmission (EVT) hybrid power system. At the same time, the cost and the cost recovery cycle under different conditions were estimated and analyzed. Finally, the fuel economy of traditional vehicles, EVT logistics vehicle with electrified engine accessories and without electrified engine accessories was compared and analyzed. This paper provides a method for calculating the cost recovery cycle of hybrid vehicles. At the same time, it provides a reference for the development and design of the system from the perspective of obtaining better economical efficiency. © 2018

关键词： Costs Cost benefit analysis Depreciation Economic analysis Economic and social effects Electric power transmission Engines Fuel economy Hybrid vehicles Recovery Vehicle transmissions Continuously variable transmission Cost recovery Development process Economic impacts Economical efficiency Hybrid power systems Logistics vehicles

来源：评论

学校读者我要写书评

暂无评论

LQG control strategy for enhancing ride and safety performance of electric vehicle driven by in-wheel motors

引用

Open Mechanical Engineering Journal 2015年第1期9卷 293-301页

作者： Jin, Li Qiang Liu, Yue Li, Jian Hua State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

In this paper, a method for reducing unspring mass as well as improving safety and ride properties of vehicles driven by in-wheel motors will be provided. To begin with, the advantages of vehicles armed with in-wheel motors will be described, after which some drawbacks of this idea will be studied. Then, to getting a better analysis, quarter car model will be studied in frequency domain. Gain of body acceleration and wheel dynamic load, which can be equal to ride property and safety performance respectively, will be compared. Finally, an idea that makes the drive motor suspend will be proposed for enhancing the two properties and then a LQG controller will be provided for further optimization. Through the comparison in time domain and frequency domain, one can come to a conclusion that vehicles driven by suspended motors not only simplified the structures but also can be used as an absorber for vibration reduction. © Jin et al.;Licensee Bentham Open.

关键词： Dynamic loads

来源：评论

学校读者我要写书评

暂无评论

An analysis of regenerative braking and energy saving for electric vehicle with in-wheel motors

International Journal of Control and Automation

引用

International Journal of control and Automation 2014年第12期7卷 219-230页

作者： Jin, Li-Qiang Chen, Peng-Fei Liu, Yue State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

Based on the structural features of electric vehicle (EV) driven by in-wheel motors and the characteristics of low speed as well as high torque for in-wheel motors, regenerative braking method for in-wheel motors has been presented. All braking torque for vehicle deceleration is output by in-wheel motors under Medium-intensity braking condition for the sake of recovering the maximum braking energy. The vehicle dynamics model that includes the hydraulic braking system and in-wheel motors driving system has been built by AMESim software. simulation has been carried out for vehicle driving conditions by NEDC cycle and FTP75 cycle. The result shows that the recovery rate of braking energy is increased dramatically by in-wheel motor braking method. The energy efficiency of electric vehicle has been improved more than 30%. It is significant for electric vehicles to increase driving range and reduce costs. © 2014 SERSC.

关键词： Regenerative braking

来源：评论

学校读者我要写书评

暂无评论

Research on Parameters Matching Design Method for Planetary Hybrid Logistics Vehicle

引用

IFAC-PapersOnLine 2018年第31期51卷 21-28页

作者： Song, Dafeng Yu, Fukang Zeng, Xiaohua Yang, Nannan Wang, Zhenwei State Key Laboratory of Automotive Simulation and Control Jilin University Changchun China

This article applies planetary hybrid system to logistics vehicles, and parameter matching of key components for vehicle power source. In the matching of planetary rows, a method based on the optimal solution of the eigenvalues of the transmission system efficiency is used to optimize the selection of eigenvalues. Considering the full use of engine dynamics, the two motors are matched in the case of using the engine's external characteristic strategy, and they are solved under the limit conditions and C-WTVC operating conditions respectively. When energy matching is performed on the super capacitor, the kinematics segmentation is performed on the operating conditions to analyze the energy variation in each segment. Finally, a logistics vehicle model is established in Cruise to simulate the dynamics and economy to prove the reasonable matching method. © 2018

关键词： Hybrid vehicles Eigenvalues and eigenfunctions Electric power transmission Engines Hybrid systems Feature parameters Logistics vehicles Parameters matching Planetary hybird system power system

来源：评论

学校读者我要写书评

暂无评论

An enhanced eco-driving strategy based on reinforcement learning for connected electric vehicles:cooperative velocity and lane-changing control

引用

Journal of Intelligent and Connected Vehicles 2022年第3期5卷 316-332页

作者： Haitao Ding Wei Li Nan Xu Jianwei Zhang State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchunChina

Purpose–This study aims to propose an enhanced eco-driving strategy based on reinforcement learning(RL)to alleviate the mileage anxiety of electric vehicles(EVs)in the connected ***/methodology/approach–In this paper,an enhanced eco-driving control strategy based on an advanced RL algorithm in hybrid action space(EEDC-HRL)is proposed for connected *** EEDC-HRL simultaneously controls longitudinal velocity and lateral lane-changing maneuvers to achieve more potential ***,this study redesigns an all-purpose and efficient-training reward function with the aim to achieve energy-saving on the premise of ensuring other driving ***–To illustrate the performance for the EEDC-HRL,the controlled EV was trained and tested in various traffic flow *** experimental results demonstrate that the proposed technique can effectively improve energy efficiency,without sacrificing travel efficiency,comfort,safety and lane-changing performance in different traffic flow ***/value–In light of the aforementioned discussion,the contributions of this paper are *** enhanced eco-driving strategy based an advanced RL algorithm in hybrid action space(EEDC-HRL)is proposed to jointly optimize longitudinal velocity and lateral lane-changing for connected EVs.A full-scale reward function consisting of multiple sub-rewards with a safety control constraint is redesigned to achieve eco-driving while ensuring other driving performance.

关键词： Ecological driving Electric vehicles Reinforcement learning in hybrid action space Velocity and lane-changing control Reward function

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：