Development of an Optimal Power-Distribution-Management Algorithm for Four-Wheel-Drive Electric Vehicles

Lee, Hae-Sol; Hwang, Myeong-Hwan; Cha, Hyun-Rok

doi:10.1109/access.2021.3095371

Cited by 3 publications

(1 citation statement)

References 37 publications

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“…In other words, you can change both the block length and the key length. In the general structure of the Rijndael algorithm, a substitute network is used to form a loop function, and multiple iterations are used [14][15][16] ,as shown in Figure 2. Each circle consists of three layers.…”

Section: Md5 Encryption Algorithm Descriptionmentioning

confidence: 99%

Application Research of Data Encryption Technology in Computer Network Information Security

Wang¹

2022

Security and Communication Networks

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In order to ensure the rights and interests of computer users, a method of data encryption technology in computer network information security is proposed. According to the symmetric encryption AES algorithm, the ECC system has higher security, slower decoding speed, smaller storage space occupation, and lower bandwidth requirements. The experimental results show that the safety mode length can reach 5 : 1, 6 : 1, 10 : 1 or even 35 : 1. Conclusion. The use of a hybrid cryptosystem based on MD5, AES, and elliptic curve keys can effectively make up for various problems and loopholes encountered in data transmission in current network security, and improve the security of information transmission in today’s social network.

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Section: Md5 Encryption Algorithm Descriptionmentioning

confidence: 99%

Application Research of Data Encryption Technology in Computer Network Information Security

Wang¹

2022

Security and Communication Networks

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Research on economical mode switching control strategy of dual-motor four-wheel drive considering motor drag and mode switching transient loss

Cao

Li³

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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In existing research on economical-performance control strategies for 4WD EV, only vehicle control strategies obtained through static efficiency interpolation of the electric-drive-system are considered, without considering the influence of high-frequency mode switching on energy consumption, and the difference between the actual power loss of the motor step-torque transient response and the theoretical loss calculated by steady-state map interpolation in the mode switching process. The research presents an economical mode switching control strategy that considers the step-torque transient response power loss caused by motor drag and mode switching. An electric-drive-system torque response testing platform was built to study the influence of the actual power loss of the motor step-torque transient response on energy consumption during mode switching under transient conditions. A mode boundary division method was proposed to analyze how different mode division impact on energy consumption and mode switching frequency so as to find the relationship between different operating points and mode boundary areas, and the optimal mode boundary width in each characteristic range was optimized hierarchically to realize reduction in energy consumption by 3.37% and reduction in mode switching frequency by 63.13%. Among them, the optimal mode boundary width accounts for 83.33% of the vehicle energy consumption reduction rate.

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Study on a Wheel Electric Drive System with SRD for Loader

Liu

2022

Energies

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Loaders are widely used in the construction of earthworks for construction projects. Due to the large volume and mass of these machines, they have shortcomings such as low driving efficiency and high energy consumption. To address these shortcomings, this work applied eclectic drive technology to a loader’s traction system. A wheel electric drive system with a switched reluctance driver (SRD) was developed. The operating principle and basic structure of the SRD system were analyzed. A new voltage PWM-controlled strategy with dynamic adjustable turn-on and turn-off angles and a single conducting phase in a fixed period was developed. Then, an SRD simulation model was established in MATLAB/Simulink. A simulation of the working condition for the loader was performed. A test bench for the SRD was built and accordingly the transportation and operation conditions were tested. The corresponding speed–time curve of transportation and operation was obtained. Simulation and experiment results showed that the electric drive system with SRD had excellent responses to changes in torque and speed and adapted well to the various working conditions of the loader. The system could effectively traction the loader and verified the feasibility and applicability of the wheel electric drive system.

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Development of an Optimal Power-Distribution-Management Algorithm for Four-Wheel-Drive Electric Vehicles

Cited by 3 publications

References 37 publications

Application Research of Data Encryption Technology in Computer Network Information Security

Application Research of Data Encryption Technology in Computer Network Information Security

Research on economical mode switching control strategy of dual-motor four-wheel drive considering motor drag and mode switching transient loss

Study on a Wheel Electric Drive System with SRD for Loader

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