Synthesis of multi-input multi-degree-of-freedom fixed shaft gear transmission configuration for vehicles

2021 ◽  
pp. 095440702110652
Author(s):  
Xueliang Li ◽  
Zhihang Wu ◽  
Shujun Yang ◽  
Jibin Hu ◽  
Zengxiong Peng
Keyword(s):  
Electric Vehicles ◽  
Rapid Development ◽  
Synthesis Method ◽  
Theory Model ◽  
Gear Transmission ◽  
Degree Of Freedom ◽  
Speed Ratio ◽  
Multiple Parameters ◽  
Transmission Mechanisms ◽  
Derivation Method

The rapid development of dual-clutch transmission (DCT) and hybrid and purely electric vehicles stimulate the researches on multi-input fixed shaft gear transmission mechanisms. The multiple degree-of-freedom (DOF) transmission mechanism can achieve a wider range of speed ratio adjustment and more modes under certain space and weight constraints, which is an ideal choice for multi gear transmission. In this paper, a synthesis method of fixed shaft gear transmission configuration is proposed. Based on the established graph theory model, kinematic characteristics of the fixed shaft gear transmission configuration are studied and the shift sequence is determined. Using these characteristics, a derivation method from the basic configuration to the comprehensive gears and shafts configuration is proposed. Multiple parameters such as the synchronizer arrangement and speed ratios are optimized. Finally, the proposed method is vigorously verified by a seven-speed DCT with four DOFs. This method is comprehensive and systematic in designing fixed shaft gear transmission configurations, which can be applied to DCT, transmissions for parallel hybrid electric vehicles, and to some novel multi-input transmissions.

scholarly journals Configuration synthesis of electric-drive transmissions for tracked vehicles

2018 ◽  
Vol 10 (1) ◽  
pp. 168781401774966
Author(s):  
Ming-Fei Gao ◽  
Ji-Bin Hu ◽  
Zeng-Xiong Peng
Keyword(s):  
Graph Theory ◽  
Electric Drive ◽  
Synthesis Method ◽  
Theory Model ◽  
Degree Of Freedom ◽  
Transmission Mechanism ◽  
Necessary Condition ◽  
Tracked Vehicles ◽  
Configuration Synthesis ◽  
Complex Transmission

This article focus on the configuration synthesis of electric-drive transmissions for tracked vehicles. First, a new graph theory model is proposed to represent the transmission mechanism, which makes the complex transmission system easier to understand. Second, a configuration synthesis method is proposed based on kinematics and statics, in which the speed degree of freedom and torque degree of freedom are considered as the constraints of configuration synthesis. Also, the expressions for speed degree of freedom and torque degree of freedom are derived. Third, based on the graph theory model, the necessary condition to achieve skid steering in the transmission of tracked vehicles is obtained. The results of this article can provides a theoretical basis for the design and analysis of transmission mechanism of tracked vehicles.

scholarly journals Location and Capacity Manufacturing Calculation of Electric Vehicle Charging Station Based on Queuing Theory

CONVERTER ◽  
2021 ◽  
pp. 529-542
Author(s):  
Qian Qian Mao, Et al.
Keyword(s):  
Electric Vehicles ◽  
Queuing Theory ◽  
Rapid Development ◽  
Theory Model ◽  
Construction Site ◽  
Charging Station ◽  
Electric Vehicle Charging ◽  
The World ◽  
Charging Stations ◽  
Minimum Objective Function

With the rapid development of industry and manufacturing, the world vigorously promotes green environmental protection, the construction of charging station is particularly important. It is urgent to study the location and capacity of charging station. In this paper, we will analyze the charging behavior of electric vehicles, and combined with the queuing theory model of electric vehicles, optimize the number of chargers by using the minimum objective function of the comprehensive cost of building charging stations. According to the maximum access power allowed by the distribution network, the service radius and scale of the target charging station are finally determined, and then 0-1 planning is used to finally determine the construction site. At the end, we give a specific example analysis to verify the effectiveness of the research results.

A Simple Synthesis Method for Spherical 4R Linkages Reaching Four Positions

2011 ◽  
Vol 199-200 ◽  
pp. 1236-1239 ◽  
Author(s):  
Tong Yang ◽  
Jian You Han ◽  
Lai Rong Yin
Keyword(s):  
Matrix Method ◽  
Synthesis Method ◽  
Simple Synthesis ◽  
Simple Derivation ◽  
Derivation Method ◽  
Curve Equation ◽  
Linkage Synthesis

For spherical 4R linkage synthesis reaching four specified task positions, we introduce a simple derivation method of spherical Burmester curve equation by employing a displacement matrix method. Then we presented a method to calculate the coordinates of circle and center points, so the spherical Burmester curves can be drawn by the software developed.

scholarly journals Intelligent Routing Control for MANET Based on Reinforcement Learning

2018 ◽  
Vol 232 ◽  
pp. 04002
Author(s):  
Fang Dong ◽  
Ou Li ◽  
Min Tong
Keyword(s):  
Reinforcement Learning ◽  
Control Algorithm ◽  
Rapid Development ◽  
Selection Strategy ◽  
Performance Simulation ◽  
Multiple Parameters ◽  
Intelligent Routing ◽  
Routing Control ◽  
The Cost

With the rapid development and wide use of MANET, the quality of service for various businesses is much higher than before. Aiming at the adaptive routing control with multiple parameters for universal scenes, we propose an intelligent routing control algorithm for MANET based on reinforcement learning, which can constantly optimize the node selection strategy through the interaction with the environment and converge to the optimal transmission paths gradually. There is no need to update the network state frequently, which can save the cost of routing maintenance while improving the transmission performance. Simulation results show that, compared with other algorithms, the proposed approach can choose appropriate paths under constraint conditions, and can obtain better optimization objective.

scholarly journals Digital Content of Modern Media as a Sphere for the Formation of Digital Etiquette in the Context of Transmedia

2021 ◽  
Vol 16 (1) ◽  
pp. 177-184
Author(s):  
Marfitsyna Arina R. ◽  
Keyword(s):  
Mass Media ◽  
Rapid Development ◽  
Synthesis Method ◽  
Digital Content ◽  
Transmedia Storytelling ◽  
Modern Media ◽  
Key Characteristics ◽  
The Creation ◽  
Modern Mass ◽  
Transformation Processes

The topicality of the article is determined by the fact that it examines the specifics of modern digital content in the context of the transformation processes, which take place in modern media in the context of transmedia that influence the formation of digital etiquette. The rapid development of the technical and technological components of communication contributes to the constant transformation of digital etiquette and this is one of the problems of modern transmedia space, which actualizes the identification of the content features of digital content, the role of the axiological component of modern media materials, the definition of effective ways of their representation that corresponds with the needs of the modern digital audience. The aim of the research is to describe the key characteristics of digital content in modern media that promote the formation of digital etiquette. The novelty of the article is in the concept analysis of print media, television and radio broadcasting in the context of transmedia according to the approach of the general key characteristics of the current digital content that contribute to the formation of digital etiquette and have the prospect of further research. The methodological basis was the scientific works of media theorists in Russian and foreign scientific communities. During the work on the article in the field of researching the content of modern mass media and the transformation processes that take place in the media, the author used the methods of analysis and comparison, the synthesis method was applied in terms of discussing the research results, formulating conclusions. The results of the research show that today not only adaptation in the digital environment is required but also close integration with all processes of the digital development of society is necessary for the successful functioning of modern media. The typical key features for modern digital content, which are the environment for the formation of digital etiquette, were identified during the research. It includes the ability to consume content through various gadgets; creation of interactive materials that satisfy the demands of a certain audience and give the right to participate in the creation of content and to choose it; the creation of complex multi-component materials that are endowed with the features of the project and also the transmedia narrative pattern. The article represents the interest to practicing journalists, as well as to researchers in the sphere of development of digital journalism, transmedia storytelling, digital content features and digital etiquette. Keywords: journalism, digital content, mass media transformation, transmedia, storytelling, digital etiquette

scholarly journals Structural synthesis of plane kinematic chain inversions without detecting isomorphism

2021 ◽  
Vol 12 (2) ◽  
pp. 1061-1071
Author(s):  
Jinxi Chen ◽  
Jiejin Ding ◽  
Weiwei Hong ◽  
Rongjiang Cui
Keyword(s):  
Mechanism Design ◽  
Adjacency Matrix ◽  
Synthesis Method ◽  
Kinematic Chain ◽  
Degree Of Freedom ◽  
Synthesis Methods ◽  
Creative Design ◽  
Structural Synthesis ◽  
Kinematic Chains

Abstract. A plane kinematic chain inversion refers to a plane kinematic chain with one link fixed (assigned as the ground link). In the creative design of mechanisms, it is important to select proper ground links. The structural synthesis of plane kinematic chain inversions is helpful for improving the efficiency of mechanism design. However, the existing structural synthesis methods involve isomorphism detection, which is cumbersome. This paper proposes a simple and efficient structural synthesis method for plane kinematic chain inversions without detecting isomorphism. The fifth power of the adjacency matrix is applied to recognize similar vertices, and non-isomorphic kinematic chain inversions are directly derived according to non-similar vertices. This method is used to automatically synthesize 6-link 1-degree-of-freedom (DOF), 8-link 1-DOF, 8-link 3-DOF, 9-link 2-DOF, 9-link 4-DOF, 10-link 1-DOF, 10-link 3-DOF and 10-link 5-DOF plane kinematic chain inversions. All the synthesis results are consistent with those reported in literature. Our method is also suitable for other kinds of kinematic chains.

The Development of Remote Monitoring and Diagnostic System for Electric Vehicles

2014 ◽  
Vol 535 ◽  
pp. 125-130
Author(s):  
Wei Liu ◽  
Shi Chun Yang ◽  
Ming Li
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Remote Monitoring ◽  
Rapid Development ◽  
Diagnostic System ◽  
Area Network ◽  
Network Technology ◽  
Vehicle Performance ◽  
Information Monitoring ◽  
Low Energy Consumption

Electric vehicle, drove by motor, has the advantages of low energy consumption, zero emissions and high comfort. Nowadays, electric vehicle, at home and abroad, have a rapid development. However, we dont effective optimize the vehicle performance and the parts when vehicle is operating. Based on the GPS (Global Position System), 3G(The 3rd Generation Telecommunication), CAN(Controller Area Network) technology, this paper design the remote monitoring and diagnostic system. This paper makes some explanation on the design of remote monitoring and diagnostic system and the function of collecting information, monitoring, storage, fault diagnosis and alarm. Experimental show, this system has the characteristics about good interaction, high real-time, high precision and stability and so on, which can be widely used in vehicle remote monitoring.

A Novel Synthesis Method of Polygon-Scaling Mechanisms

2014 ◽  
Author(s):  
Guochao Bai ◽  
Shimin Wei ◽  
Duanling Li ◽  
Qizheng Liao ◽  
Xianwen Kong
Keyword(s):  
Synthesis Method ◽  
3D Models ◽  
Degree Of Freedom ◽  
Straightforward Manner ◽  
Novel Synthesis

A polygon-scaling mechanism is a single DOF (degree-of-freedom) mechanism for scaling a polygon. This paper presents a tetragon-elements based synthesis method of polygon-scaling mechanisms. According to movable conditions of radial scaling elements, four basic tetragon elements (rhombus element, parallelogram element, kite element and general tetragon element) are proposed. For a given polygon, these four types of elements can be selected based on the characteristics of target polygons to construct polygon-scaling mechanisms in a straightforward manner. Using this synthesis method, some planar 1-DOF scaling mechanisms are obtained with the characteristics of retracting and deploying. Their 3D models are also presented to proof the validity of the proposed method. Finally, a table of tetragon elements with the characteristics of their associated polygon-scaling mechanisms is summarized using which polygon-scaling mechanisms can be easily constructed.

Criteria and Design Guidance for Lithium-ion Batteries Safety from a Material Perspective

2022 ◽  
Author(s):  
Binghe Liu ◽  
Huacui Wang ◽  
Yangzheng Cao ◽  
Xin Liu ◽  
Ya Mao ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electric Vehicles ◽  
Rapid Development ◽  
Electronic Devices ◽  
Lithium Ion ◽  
Safety Issues ◽  
Design Guidance

With the rapid development of electric vehicles (EVs) and electronic devices in current mobile society, the safety issues of lithium-ion batteries (LIBs) have attracted worldwide attention. Mechanical, electrochemical, and thermal...

Electric Vehicles in Smart Grids

2022 ◽  
pp. 1192-1211
Author(s):  
Cosmin Darab
Keyword(s):  
Electric Vehicles ◽  
Smart Grids ◽  
New Technologies ◽  
Combustion Engine ◽  
Power Grid ◽  
Rapid Development ◽  
Energy Crisis ◽  
Grid Integration ◽  
Vehicle To Grid ◽  
Smart Grid Technology

Electric vehicles were proposed as a good solution to solving energy crisis and environmental problems caused by the traditional internal combustion engine vehicles. In the last years due to the rapid development of the electric vehicles, the problem of power grid integration was addressed. In order to not put additional pressure onto the power grid several new technologies were developed. This chapter presents the smart grid technology, vehicle-to-grid concept, and electric vehicles grid integration. These technologies made possible the integration of electric vehicles without any major changes in the power grid. Moreover, electric vehicles integration brought new benefits to the power grid like better integration of renewable energy.

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