scholarly journals Distribution of driving force beneath wheeled vehicle with varying center of gravity

2019 ◽  
Vol 11 (1) ◽  
pp. 168781401982559 ◽  
Author(s):  
Chen Zhou ◽  
Xin-Hui Liu ◽  
Wei Chen ◽  
Fei-Xiang Xu ◽  
Bing-Wei Cao
Keyword(s):  
Driving Force ◽  
Full Time ◽  
Gravity Center ◽  
Driving System ◽  
Virtual Lab ◽  
Wheel Drive ◽  
Environment Simulation ◽  
Working Principle ◽  
Multi Body ◽  
Driving Force Analysis

Driving force analysis is performed on the no-spin differential and full-time all-wheel-drive vehicle; this thesis takes an automatic loading mixing vehicle as an example to introduce the compositions and working principle of the driving system. Based on the tire-ground mechanics, the model of the dynamics and the kinematics is established under the walking straight and steering conditions. According to the theoretical model, the influence of the vehicle’s gravity center on the moving system is analyzed. Co-simulation based on LMS Imagine Lab AMESim and LMS Virtual Lab Motion is performed to build the hydraulic driving system and the multi-body dynamics system models. Based on the tire-ground load environment simulation model built by 1D + 3D, various positions of the gravity center of the model are set to compare with the theoretical analysis. Various weight blocks are also added to change the location of the gravity center in the practical experiment. The conclusions that different gravity center positions lead to the change of the driving torque distribution are proved by the simulation results and experimental data.

Based on Adams and Matlab Co-Simulation and Experimentation Research for Independent 4WD EV

2011 ◽  
Vol 383-390 ◽  
pp. 7238-7245 ◽  
Author(s):  
Yu Qin Zhao ◽  
Run Sheng Zhang ◽  
Li Ye Li ◽  
Zhi Jun Zhang
Keyword(s):  
Control System ◽  
Driving Force ◽  
Force Distribution ◽  
Distribution Strategy ◽  
Drive Control ◽  
Wheel Drive ◽  
Simulation Based ◽  
Adams Software ◽  
Multi Body ◽  
Body Dynamic

Analyzing the structural property of model vehicle, a multi-body dynamic model of a full independent 4-wheel-drive electric vehicle(4WD EV) is established by using automatic dynamic analysis of mechanical systems (ADAMS) software, and an electric motor and drive-control system is established under Matlab/Simulink environment. Co-simulation based on the two soft wares is under control of the equality power driving force distribution strategy controller. The results of co-simulation show that the co-simulation is effective and the model’s rationality is validated. It could be applied in the following experiments in complex circumvents, and give theoretic supports.

scholarly journals An Integrated Investigation of Spatiotemporal Habitat Quality Dynamics and Driving Forces in the Upper Basin of Miyun Reservoir, North China

2018 ◽  
Vol 10 (12) ◽  
pp. 4625 ◽  
Author(s):  
Shengjun Yan ◽  
Xuan Wang ◽  
Yanpeng Cai ◽  
Chunhui Li ◽  
Rui Yan ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Habitat Quality ◽  
Driving Force ◽  
North China ◽  
Population Change ◽  
Driving Forces ◽  
Policy Formulation ◽  
Force Analysis ◽  
Miyun Reservoir ◽  
Driving Force Analysis

Understanding changes in habitat quality and the driving forces of these changes at landscape scales is a critical part of effective ecosystem management. The present study investigated spatiotemporal habitat quality dynamics and related driving forces from 2005 to 2015 in the upper basin of Miyun Reservoir in North China by constructing an effective framework integrated InVEST and binary logistic regression models. This framework expanded the driving force analysis into an assessment of changes in habitat quality and intuitively verified the effectiveness of relevant environmental policies. The proposed method of combining the equidistant random sampling method and the method of introducing spatial lag variables in logistic regression equation can effectively solve spatial autocorrelation with a large enough number of sampling points. Overall, habitat quality improved during the study period. Spatially, a concentrated loss of habitat occurred in the southeastern part of the basin between the reservoir and mountainous areas, while other areas gradually recovered. Driving force analysis showed that lower elevation mountain land, gentle slopes, locations near rural land or roads, larger areas of grain cultivation, and areas with little population change had a higher likelihood of having changed in habitat quality in the upper basin of Miyun Reservoir. These results suggested that the present policy of protecting the ecosystem had a positive effect on improving habitat quality. In the future, the human activity management related to habitat quality needs to be strengthened. The present study would provide a reference for land use policy formulation and biodiversity conservation.

Research on a Control Unit of in-Wheel Motor Applied in Mobile Robot

2011 ◽  
Vol 52-54 ◽  
pp. 133-138
Author(s):  
Qiang Yin ◽  
Quan Jie Gao ◽  
Xiao Peng Chen ◽  
Jiu Lin Zuo
Keyword(s):  
Mobile Robot ◽  
Software Design ◽  
Control Unit ◽  
Driving System ◽  
Drive Control ◽  
Working Principle

Compared with the driving system of traditional motors, the advantages of in-wheel motor are described in this article. A kind of drive control unit of in-wheel motor is designed for mobile robot, and its composition, working principle, hardware and software design are described. Experiments show that the control unit can make a good performance to meet the requirements of mobile robot.

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