Nonlinear Coupling Characteristics Analysis of Integrated System of Electromagnetic Brake and Frictional Brake of Car

He, Ren; Hu, Donghai

doi:10.1155/2015/928152

Cited by 6 publications

(3 citation statements)

References 23 publications

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“…Shi et al [12] designed electromagnetic double-disc friction integrated brake, the braking device has a higher braking torque compared to the singledisc structure, and increasing the application scope of braking devices. He et al [13] utilized the power bond diagram method to establish a non-linear coupling mathematical model of the integrated system of electromagnetic brake and friction brake, and through experiments to validate the accuracy of the nonlinear coupling mathematical model, provides theoretical guidance for the design of electromagnetic friction brakes. Huang et al [14] through the friction-braking compound experiment verified that friction braking torque accounts for more than 90% of the friction braking torque in the electromagnetic friction braking device.…”

Section: Introductionmentioning

confidence: 99%

Analysis of electromagnetic-thermal coupling braking properties of combined electromagnetic friction and shape memory alloy brake

Gong¹,

Xiong²,

Huang³

2022

Smart Mater. Struct.

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To address the problems of severe heat generation and poor stability of traditional electromagnetic friction brakes, combined electromagnetic friction and shape memory alloy braking method is proposed. This novel brake solves the traditional electric brake thermal decay problem based on the temperature sensing ability of shape memory alloy, which improves its working stability in a high-temperature environment. Based on Ampere's law of magnetic field, the relationship between current and electromagnetic force was established, and the equation of electromagnetic force braking torque was derived. Based on the thermodynamic model of a shape memory alloy, the relationship between the frictional torque of shape memory alloy and parameters such as temperature, squeezing pressure, and structure size was established. The magnetic and thermal fields of this brake were analyzed by the finite element method to obtain the magnetic field distribution and the magnitude of electromagnetic force at different currents and to derive the temperature distribution of the brake at different currents. The brake was analyzed by the shape memory alloy squeezing pressure test platform and the braking performance test platform. The results show that the electromagnetic torque grows non-linearly with temperature, and the squeezing force generated by the shape memory alloy spring increases with temperature. When the current is 0.7A, the braking torque generated by electromagnetism is 170.3N·m, while the maximum braking torque generated by the combination of electromagnetism and shape memory alloy is 212.6N·m, which is 20.4% higher than that of the traditional electromagnetic friction brake. This novel brake improves braking performance and ensures stable braking performance under temperature rise.

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Section: Introductionmentioning

confidence: 99%

Analysis of electromagnetic-thermal coupling braking properties of combined electromagnetic friction and shape memory alloy brake

Gong¹,

Xiong²,

Huang³

2022

Smart Mater. Struct.

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“…However, compound braking does not mean simply superposing two different braking modes together. [5][6][7][8] This will not only make the brake system bulky and difficult to operate, but also difficult to control due to its complex structure. And it also cannot effectively utilize the beneficial effect of the magnetic field on the wear of the friction pair, such as using magnetic field to control friction, reducing wear, and so on.…”

Section: Introductionmentioning

confidence: 99%

Design of a frictional–electromagnetic compound disk brake for automotives

Huang

Bao

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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According to the disadvantages of serious wear and heat fade of friction pad in frequent and high speed braking of friction brakes, and the insufficient power of electromagnetic brakes in low speed braking, a novel frictional-electromagnetic compound disk brake which combines both of these two brake principles is proposed for automotives in this paper. The excitation coils are designed based on the Zhang Yicheng theory model, and the compound brake prototype is manufactured based on the self-made magnetic brake pads and existing automotive brakes. The magnetic field and dynamic of the brake are simulated by using COMSOL Multiphysics software. The frictional–electromagnetic compound brake tests are implemented on the reconstructive disk brake simulation test bench. The experimental results show that the friction braking torque accounts for more than 90% of the compound braking torque in the process of compound braking, and the trend of the change is the same as that of the compound braking torque. When the initial braking speed exceeds 75 km/h, the electromagnetic braking torque does not increase with the increase in speed, instead, it decreases slightly because of demagnetization. The designed frictional–electromagnetic compound disk brake has good braking performance.

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“…Therefore, there are a lot of researches have been pursue d on the brake energy recycling, ranging from cooperative control [1][2][3][4] of regenerative brake and friction brake to the dynamic performance analysis in brake process [5][6][7]. However, the common trait of these existing hybrid electric vehicle brake control strategies is to use mechanical friction brake instead of electrical brake completely in the highintensity brake or high battery state of charge (SOC) and high battery voltage conditions in order to ensure the safety of the driving and charging.…”

Section: Introductionmentioning

confidence: 99%

Research on System Analysis and Control Strategy of Electrical Brake in A Series-parallel Hybrid Electric Vehicle

Sun¹,

Shao²,

Wang³

et al. 2016

IJSED

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For the sake of high-efficiency energy recycling and brake security for series-parallel hybrid electric vehicle, an integrated brake system with an electric consuming brake subsystem and advanced strategy is proposed. The specific structure of electric consuming brake subsystem is introduced. The brake processes in different brake conditions are analyzed. A brake control strategy relying on the brake condition is applied in the series-parallel hybrid electric vehicle. In view of the complexity and dynamic characteristics, a coupled whole vehicle model which combined the driveline model and the thermal management system model is proposed to study the energy flow and utilization in the different electrical brake processes. A simulation of the whole vehicle under an UDDS driving cycle is studied. According to the simulation result, the integrated brake system and control strategy are effective for the series-parallel hybrid electric vehicle. It not only can ensure the security of the vehicle driving and battery energy storage, but also can enhance the energy utilization and prolong the life of mechanical brake device in the brake process.

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Nonlinear Coupling Characteristics Analysis of Integrated System of Electromagnetic Brake and Frictional Brake of Car

Cited by 6 publications

References 23 publications

Analysis of electromagnetic-thermal coupling braking properties of combined electromagnetic friction and shape memory alloy brake

Analysis of electromagnetic-thermal coupling braking properties of combined electromagnetic friction and shape memory alloy brake

Design of a frictional–electromagnetic compound disk brake for automotives

Research on System Analysis and Control Strategy of Electrical Brake in A Series-parallel Hybrid Electric Vehicle

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