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学者姓名：李德胜
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Abstract ：
本实用新型公开了一种石油钻井井下电磁阻尼发电机测试台架，包括减振平台、信息采集和控制硬件部分，减振平台上设置有负载电机与被测电磁阻尼发电机。负载电机与被测电磁阻尼发电机之间设置有转矩转速传感器和增速器，转矩转速传感器信号传输到信息采集硬件中。将被测电磁阻尼发电机与负载电机都设置在减振平台上，供电电源对负载电机供电，为被测电磁阻尼发电机提供转矩与转速测试环境，转矩转速传感器设置在二者之间，能够采集到被测电磁阻尼发电机的加载情况，转矩转速传感器信号连接在信息采集硬件上，实验操作人员可以通过远程控制操作测试，测试不同工作情况下被测电磁阻尼发电机的特性与控制性能。
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| GB/T 7714 | 李德胜 , 聂宇航 , 郭本振 et al. 一种石油钻井井下电磁阻尼发电机测试台架 : CN202320860149.1[P]. | 2023-04-18 . |
| MLA | 李德胜 et al. "一种石油钻井井下电磁阻尼发电机测试台架" : CN202320860149.1. | 2023-04-18 . |
| APA | 李德胜 , 聂宇航 , 郭本振 , 李泽群 , 史佳瑞 . 一种石油钻井井下电磁阻尼发电机测试台架 : CN202320860149.1. | 2023-04-18 . |
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Abstract ：
This paper proposes an electromagnetic damping generator (EDG), which is a novel downhole generator for the rotary steerable system (RSS). The EDG is designed to solve the problem of unstable voltage output by the RSS generator. The generator is designed by integrating a traditional generator and an eddy current retarder (ECR). The system converts the excess kinetic energy of the EDG rotor into heating energy by the principle of eddy-current braking and resistance heating. The electromagnetic finite element models of the generator part and ECR part are established and solved by computer. The voltage and torque generated by the generator part and the braking torque of the ECR part are predicted. In the bench test, When the input power is 2537 W < P-input < 3304 W, the EDG is able to output 300.8 V. When the input power is 3304 W, the output voltage of the ordinary generator is 346 V. The EDG can be adjusted by a decrement of up to 45.2 V to output the rated voltage. The problem of generator output voltage instability in the RSS is solved when mud flow is unstable.
Keyword ：
ECR ECR voltage voltage Generator Generator power power torque torque
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| GB/T 7714 | Li, Zequn , Li, Desheng , Guo, Benzhen et al. Study on the characteristics of an electromagnetic damping generator [J]. | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS , 2023 , 72 (1) : 35-52 . |
| MLA | Li, Zequn et al. "Study on the characteristics of an electromagnetic damping generator" . | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS 72 . 1 (2023) : 35-52 . |
| APA | Li, Zequn , Li, Desheng , Guo, Benzhen , Zhao, Tong . Study on the characteristics of an electromagnetic damping generator . | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS , 2023 , 72 (1) , 35-52 . |
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Abstract ：
高机动平台的发展表明,高速行驶等机动性能提升导致持续制动功率不断增加、采用单一机械制动其摩擦部件温升过高,亟需加强制动系统缓速匹配的研究.通过分析高机动平台典型制动工况,明确了缓速匹配的设计输入;对多类型缓速技术的发展现状和特性进行分析,提出一种适合高机动制动匹配的新型电缓方案,分析研究了新型电缓的主要关键技术;以40 t级高机动平台为背景进行新型缓速性能研究,为高机动平台缓速制动研发提供一种新的技术途径.
Keyword ：
电缓速 电缓速 特种车辆 特种车辆 高机动平台 高机动平台 制动 制动
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| GB/T 7714 | 宁克焱 , 李德胜 , 田金山 et al. 高机动平台电缓速匹配技术综述 [J]. | 兵工学报 , 2023 , 44 (1) : 1-10 . |
| MLA | 宁克焱 et al. "高机动平台电缓速匹配技术综述" . | 兵工学报 44 . 1 (2023) : 1-10 . |
| APA | 宁克焱 , 李德胜 , 田金山 , 盖江涛 , 欧阳巍 , 兰海 et al. 高机动平台电缓速匹配技术综述 . | 兵工学报 , 2023 , 44 (1) , 1-10 . |
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Abstract ：
In this article, a clear and concise analytical method for predicting the performance of a Liquid-cooling eddy current brake (LC-ECB) is proposed. The LC-ECB has a coolant channel in the rotor to allow direct cooling of the inner surface of the stator. The static air-gap magnetic field distribution is obtained by the dynamic magnetic equivalent circuit (MEC) method, and the magnetic flux leakage and global magnetic saturation effects are fully considered. The magnetic field intensity distribution function of the eddy current reaction magnetic field is derived for the first time based on Ampere circuital theorem. Considering the local magnetic saturation and skin effect, a novel double-iteration algorithm based on the conservation principle of magnetic pressure drop is applied to obtain the transient air-gap flux density distribution, and then the brake torque expression is obtained. The finite element method (FEM) and experimental results show that the proposed method is feasible and effective. The new model is easy to program and can be easily used in the initial design and optimization of LC-ECB.
Keyword ：
magnetic equivalent circuit magnetic equivalent circuit magnetic field distribution magnetic field distribution Eddy current brake Eddy current brake skin effect skin effect magnetic saturation magnetic saturation
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| GB/T 7714 | Guo, Benzhen , Li, Desheng , Tian, Jinshan et al. Analytical calculation method of a liquid-cooling eddy current brake considering magnetic saturation and skin effect [J]. | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS , 2023 , 73 (3) : 191-211 . |
| MLA | Guo, Benzhen et al. "Analytical calculation method of a liquid-cooling eddy current brake considering magnetic saturation and skin effect" . | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS 73 . 3 (2023) : 191-211 . |
| APA | Guo, Benzhen , Li, Desheng , Tian, Jinshan , Ye, Lezhi , Wang, Bin , Li, Zequn . Analytical calculation method of a liquid-cooling eddy current brake considering magnetic saturation and skin effect . | INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS , 2023 , 73 (3) , 191-211 . |
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Abstract ：
The retarder is widely used to ensure braking safety in heavy vehicles due to its noncontact braking characteristics. Currently, retarders are generally mounted on tractors, but semi-trailers have greater inertia and are prone to accidents. Therefore, the semi-trailer's brakes have to work frequently to maintain stability during downhill braking, which causes the brakes to generate high temperatures or even failure. Based on the above problems, a novel internal pump-hydraulic retarder axle (IP-HRA) is proposed, which integrates the pump and hydraulic retarder (HR) into the support axle. The prototype of the IP-HRA was made and a bench test was conducted. In the experiment, the single-side braking power of the IP-HRA reaches 300 kW and its torque can be controlled by adjusting the outlet pressure. A co-simulation model of articulated vehicles is established to predict the braking state by computer solutions. Based on the experimental data, the methods of IP-HRA braking semi-trailer and traditional HR braking tractor are compared. The results of co-simulation show that the IP-HRA is more conducive to the braking stability of the articulated vehicle than the traditional HR when only retarder is used. Finally, the braking time and braking deceleration of IP-HRA are verified by road experiments.
Keyword ：
Auxiliary brake Auxiliary brake Articulated vehicle Articulated vehicle Hydraulic retarder axle Hydraulic retarder axle Experiment Experiment Braking stability Braking stability
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| GB/T 7714 | Gao, Zhiwei , Li, Desheng , Liu, Zongqiang et al. Design and Braking Stability Analysis of a Novel Internal Pump-Hydraulic Retarder Axle for Heavy Articulated Vehicle [J]. | INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY , 2022 , 23 (5) : 1285-1294 . |
| MLA | Gao, Zhiwei et al. "Design and Braking Stability Analysis of a Novel Internal Pump-Hydraulic Retarder Axle for Heavy Articulated Vehicle" . | INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY 23 . 5 (2022) : 1285-1294 . |
| APA | Gao, Zhiwei , Li, Desheng , Liu, Zongqiang , Ye, Lezhi . Design and Braking Stability Analysis of a Novel Internal Pump-Hydraulic Retarder Axle for Heavy Articulated Vehicle . | INTERNATIONAL JOURNAL OF AUTOMOTIVE TECHNOLOGY , 2022 , 23 (5) , 1285-1294 . |
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Abstract ：
To solve theproblems of an insufficient braking moment for the eddy current retarder at high speed, a small braking moment and slow response of the hydraulic retarder at low speed, and a low power density of the existing electromagnetic hydraulic retarder(EHR), a novel radially distributed electromagnetic-hydraulic retarder(R-EHR) was proposed. The R-EHR fully absorbs the advantages of the braking characteristics of hydraulic retarders and eddy current retarders. The cooling fluid is used to realize the braking of the hydraulic part. At the same time, it acts on the heating surfaces to improve the torque of the electromagnetic part. In this paper, finite element models of the flow field and electromagnetic field are established to predict braking performance. The braking performance of the R-EHR is obtained by bench test, the error between the simulation and experimental data is compared, and the experimental data are analyzed. The results show that the proportion of electromagnetic braking torque in the novel R-EHR is more reasonable. The braking torque increased by 26% and the power density increased by 37.5% at 2000 RPM compared to that of the EHR. The R-EHR can control the braking torque only by adjusting the current, thus simplifying the control system.
Keyword ：
Electromagnetics Electromagnetics Blades Blades Torque Torque Auxiliary brake Auxiliary brake Stators Stators electromagnetic-hydraulic retarder electromagnetic-hydraulic retarder experiment experiment Magnetic liquids Magnetic liquids finite element analysis finite element analysis Rotors Rotors high power density high power density Eddy currents Eddy currents
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| GB/T 7714 | Gao, Zhiwei , Li, Desheng , Tian, Jinshan et al. Design and Performance Analysis of a Novel Radially Distributed Electromagnetic-Hydraulic Retarder for Heavy Vehicles [J]. | IEEE TRANSACTIONS ON ENERGY CONVERSION , 2022 , 37 (2) : 892-900 . |
| MLA | Gao, Zhiwei et al. "Design and Performance Analysis of a Novel Radially Distributed Electromagnetic-Hydraulic Retarder for Heavy Vehicles" . | IEEE TRANSACTIONS ON ENERGY CONVERSION 37 . 2 (2022) : 892-900 . |
| APA | Gao, Zhiwei , Li, Desheng , Tian, Jinshan , Ning, Keyan , Ye, Lezhi . Design and Performance Analysis of a Novel Radially Distributed Electromagnetic-Hydraulic Retarder for Heavy Vehicles . | IEEE TRANSACTIONS ON ENERGY CONVERSION , 2022 , 37 (2) , 892-900 . |
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Abstract ：
This paper proposes a new concentration gradient generator based on the principle and flow characteristics of solution mixing in the microchannel. This concentration gradient generator works with oscillating bubbles in the microchannel, which are excited with bulk acoustic wave. The oscillating bubbles are used to mix the solution in the microchannel. The volume of each bubble is controllable individually and the number of bubbles partaken mixing is adjustable. Therefore, the mixing position of the solution and the concentration gradient in the microchannel are adjustable. Therefore, the new concentration gradient generator has the advantages of fast response and high flexibility. Simulation software COMSOL 5.5 was used to simulate the influence of the inlet flow rate, the bubble amplitude, and the number of bubbles on the mixing result. The simulation result shows that the inlet flow rate and the bubble amplitude affect the mixing width of the solution in the microchannel. The simulation result also shows that the concentration distribution with different gradient can be generated by adjusting the number of bubbles located in the solution microchannel. The simulation has an important reference for the design of the concentration gradient generator.
Keyword ：
Concentration gradient generator Concentration gradient generator oscillating bubbles oscillating bubbles bulk acoustic wave bulk acoustic wave acoustically driven acoustically driven
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| GB/T 7714 | Liu, Bendong , Tan, Jingkai , Dong, Shijie et al. Simulation of multi-point mixing concentration gradient generator [J]. | INTERNATIONAL JOURNAL OF MODERN PHYSICS B , 2022 , 36 (06) . |
| MLA | Liu, Bendong et al. "Simulation of multi-point mixing concentration gradient generator" . | INTERNATIONAL JOURNAL OF MODERN PHYSICS B 36 . 06 (2022) . |
| APA | Liu, Bendong , Tan, Jingkai , Dong, Shijie , Li, Desheng , Yang, Jiahui . Simulation of multi-point mixing concentration gradient generator . | INTERNATIONAL JOURNAL OF MODERN PHYSICS B , 2022 , 36 (06) . |
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Abstract ：
The development of micropump is directly related to the popularization and application of microfluidic systems. Recently, microfluidic systems have more urgent requirements for stable operation and simple structure of micropumps. For these purposes, a novel micro steam jet pump which uses planar induction heating to evaporate the initial fluid is presented. This new micropump could generate continuous flow with merits of no moving parts, stable operation and easy integration. A negative pressure is formed flowed with high-speed flow of vapor in the chamber to pump and eject liquid, and then realize continuous pumping. The working chamber of the micropump is calculated with aerodynamic function, and the simulation analysis is carried on with COMSOL Multiphysics 5.5. By changing key working parameters, appropriate working conditions are adopted with simulation analysis. When the primary vapor temperature is 403.15 K, the inlet width of the tapered section of the mixing chamber is 0.4 mm and the outlet width of the diffuser is 0.5 mm, the mingling and enhancing pressure performance of the micro steam jet pump is better. The optimization of design and simulation involved in this paper provided a good guidance for the design and experimental study of the micro steam jet pump.
Keyword ：
mixing chamber mixing chamber induction heating induction heating Micro steam jet pump Micro steam jet pump CFD CFD steam-water injection steam-water injection
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| GB/T 7714 | Liu, Bendong , Dong, Shijie , Tan, Jingkai et al. Design and flow simulation of a micro steam jet pump [J]. | MODERN PHYSICS LETTERS B , 2022 , 36 (09) . |
| MLA | Liu, Bendong et al. "Design and flow simulation of a micro steam jet pump" . | MODERN PHYSICS LETTERS B 36 . 09 (2022) . |
| APA | Liu, Bendong , Dong, Shijie , Tan, Jingkai , Li, Desheng , Yang, Jiahui . Design and flow simulation of a micro steam jet pump . | MODERN PHYSICS LETTERS B , 2022 , 36 (09) . |
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Abstract ：
我国山区卡车存在长时间下坡制动负荷大的问题,由于液力缓速器成本高和电涡流缓速器持续制动转矩热衰退严重,导致缓速器在卡车上推广缓慢.提出了一种线圈水冷式电涡流缓速器,将发热的缓速器定子和励磁线圈都设计为水冷结构,从而解决了电涡流缓速器长时间制动产生高温导致线圈励磁不稳定、制动转矩衰退等问题.采用电磁仿真的方法分析了缓速器装车前后的静态气隙磁通密度,计算了由于传动轴带来的漏磁磁通,并提出减少漏磁的方法,漏磁比例由21.2％降至3.4％.通过有限元法求解了缓速器定子和励磁线圈的温度场分布,并结合瞬态电磁场解出定子温度场、线圈温度场耦合下的缓速器制动转矩.针对18 t卡车试制了安装在后桥上的线圈水冷式电涡流缓速器样机并进行了台架试验与车载试验,台架试验结果表明缓速器转矩的试验值与仿真值吻合较好,误差在9.7％内,车辆满载试验时,最大减速度为0.61 m/s2.
Keyword ：
电磁仿真 电磁仿真 制动转矩 制动转矩 电涡流缓速器 电涡流缓速器 汽车制动 汽车制动 磁热分析 磁热分析 线圈水冷 线圈水冷
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| GB/T 7714 | 叶乐志 , 李祥利 , 李德胜 . 线圈水冷式电涡流缓速器磁热分析与试验 [J]. | 北京工业大学学报 , 2022 , 48 (11) : 1122-1131 . |
| MLA | 叶乐志 et al. "线圈水冷式电涡流缓速器磁热分析与试验" . | 北京工业大学学报 48 . 11 (2022) : 1122-1131 . |
| APA | 叶乐志 , 李祥利 , 李德胜 . 线圈水冷式电涡流缓速器磁热分析与试验 . | 北京工业大学学报 , 2022 , 48 (11) , 1122-1131 . |
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Abstract ：
为保证在长下坡工况时的安全行驶,重载车辆普遍安装液力缓速器或电涡流缓速器.液力缓速器(液缓)低速特性差,单独使用难以满足重载车辆在低车速下长坡时对辅助制动系统的需求,而电涡流缓速器(电缓)在高速时扭矩小,由此得出:电缓与液缓两者的制动性能具有互补的特点.结合液力制动及电涡流制动机理,将电缓与液缓一体化设计,获得了一种径向构造的电液复合缓速器(简称电液复合缓速器).该缓速器在低转速下主要依靠电涡流缓速部分制动,在高速时依靠电涡流缓速部分及液力缓速部分共同作用.对试制的样机进行台架试验,研究了电液复合缓速器的制动特性和控制方法.同时,建立车辆仅依靠缓速器制动的动力学模型,并根据试验结果建立了考虑响...
Keyword ：
台架制动试验 台架制动试验 辅助制动 辅助制动 电涡流缓速器 电涡流缓速器 液力缓速器 液力缓速器 响应时间 响应时间 动力学分析 动力学分析
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| GB/T 7714 | 李德胜 , 田金山 , 宁克焱 et al. 径向构造电液复合缓速器制动特性 [J]. | 北京工业大学学报 , 2021 , 47 (06) : 573-580 . |
| MLA | 李德胜 et al. "径向构造电液复合缓速器制动特性" . | 北京工业大学学报 47 . 06 (2021) : 573-580 . |
| APA | 李德胜 , 田金山 , 宁克焱 , 叶乐志 , 张凯 . 径向构造电液复合缓速器制动特性 . | 北京工业大学学报 , 2021 , 47 (06) , 573-580 . |
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