检索结果-内蒙古大学图书馆

International Conference on Electrical Machines and systems (ICEMS)

作者： Ma Zhiyong Yaohua Hu Chen Can The Fourth Representative Office of the Navy in Nanjing Navy Military Representative Office in Nanjing Nanjing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing Engineering Institute of Aircraft Systems Nanjing China

ISBN: (纸本)9781728133997

This paper has proposed a novelty method to reduce the iron loss of a V-shaped interior permanent magnet (IPM) machine for traction applications. By optimizing the pole-arc to pole-pitch ratios of magnets and shaping the rotor iron, the total iron losses of initial model is extremely reduced, due to the harmonics of rotor magnetomotive force are reduced. The waveforms and harmonics of air gap flux density and flux density of stator core are studied. The core loss and core loss density of three IPM motors are analyzed and compared. The efficiency of the optimized V-shaped IPM machine can be improved under high speed condition by the reduction of iron loss.

关键词： Iron loss Interior permanent magnet (IPM) machine Rotor magnetomotive force harmonics Shaping the rotor iron Core loss air-gap flux density Integrated Pest Management harmonics reduction Stator cores MAGNETS machine waveforms

来源：评论

学校读者我要写书评

暂无评论

The analysis of multi-cylinder synchronization in the load simulation system for reciprocating seals

The analysis of multi-cylinder synchronization in the load s...

引用

CSAA/IET International Conference on Aircraft Utility systems, AUS 2018

作者： Guo, Shengrong Zhang, Pengfei Zhou, Qinghe Sun, Dechen Ku, Houtao Peng, Chao Ouyang, Xiaoping Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing Engineering Institute of Aircraft System Shuige Road 33 Nanjing211106 China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Zheda Road 38 Hangzhou310027 China

ISBN: (纸本)9781785617911

The load simulation system is a subsystem of the reciprocating sealing test system, to evaluate the working life of the aircraft actuator's sealing components. In this paper, a synchronization controller based on bias coupling is developed to study the control characteristics of the multi-cylinder synchronization under the control of one servo valve. The dynamic model of the load is established and verified by simulations and experiments. The influences of friction, load, and etc. on the synchronization are also analyzed. And the results indicated that synchronization error can be effectively reduced using the controller, besides great cost savings. © 2018 IET Conference Publications. All rights reserved.

关键词： Synchronization

来源：评论

学校读者我要写书评

暂无评论

A study on electromagnet attraction characteristics based on Maxwell

A study on electromagnet attraction characteristics based on...

引用

CSAA/IET International Conference on Aircraft Utility systems (AUS 2018)

作者： Le Yang Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration AVIC NEIAS Nanjing China

ISBN: (纸本)9781510872745

The structure and working principles of airborne electromagnets were introduced and magnetic field analysis and electromagnetic attraction calculation were completed with Maxwell electromagnetic simulation software. By magnetostatic field analysis, the distribution diagrams of magnetic lines of force and magnetic induction intensity were obtained; by electromagnet attraction analysis, the electromagnet attraction was calculated and the impacts of materials, air gap and excitation on electromagnet attraction were examined, thus providing valuable reference for electromagnet optimization.

关键词： Maxwell Electromagnet Magnetostatic field Attraction

来源：评论

学校读者我要写书评

暂无评论

A study on high static friction of steering actuator

A study on high static friction of steering actuator

引用

CSAA/IET International Conference on Aircraft Utility systems, AUS 2018

作者： Xiao, Tian Xu, Xiangrong AVIC Jincheng Nanjing Engineering Institute of Aircraft Systems Dept. name of Organization Key Laboratory of Science and Technology on Aviation Electromechanical System Integration Nanjing Jiangus China

ISBN: (纸本)9781785617911

Aircraft Steering actuators have high static friction phenomena In recent years, which affect the use and lower *** this paper, some control actuator was studied. The factors that affect the static friction of the control actuator were analyzed and feasible solutions for excessive friction of the control actuator were proposed and verified by tests. The research process and conclusion provide valuable reference for the design and troubleshooting of actuator cylinder products. © 2018 IET Conference Publications. All rights reserved.

关键词： Actuators

来源：评论

学校读者我要写书评

暂无评论

Burst analysis of the aircraft bootstrap reservoir

Burst analysis of the aircraft bootstrap reservoir

引用

CSAA/IET International Conference on Aircraft Utility systems, AUS 2018

作者： Zhang, Heran Yin, Junya Ouyang, Xiaoping Zhang, Pengfei State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University Zheda Road 38 Hangzhou310027 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Action Industry Corporation of China Shuige Road 33 Nanjing211106 China

ISBN: (纸本)9781785617911

As a key component of the aircraft hydraulic system, the bootstrap reservoir can guarantee good self-priming of the pump at high rotation speed. This study provides the basic structure Jnd working principle of the bootstrap reservoir. This paper analyzes the causes and characteristics of the reservoir buret. Through the copulation of AMESim and ANSYS workbench, the influence of the hydraulic impact on reservoir burst was observed, and the dangerous part where the bursting occurred was the piston rod. © 2018 IET Conference Publications. All rights reserved.

关键词： Aircraft

来源：评论

学校读者我要写书评

暂无评论

Study on LabVIEW-based aviation BLDCM Control system

引用

IOP Conference Series: Materials science and Engineering 2020年第1期751卷

作者： Linhai Zhang Yeming Yao Lilin Xu Aviation Key Laboratory of Science and Technology on Electromechanical System Integration Nanjing Engineering Institute of Aircraft Systems AVIC Nanjing Jiangsu Province China 211100

with the increasing market demand and rapid development of aircraft technology, more electric concept has become an important trend for the future development of aircraft. Therefore, motors are widely applied in the aviation field increasingly. This paper mainly introduces the hardware environment and LabVIEW implementation process in the development of aviation high speed and high voltage BLDCM control system based on NI hardware and software platform. The test shows the control system is able to realize effective control over aviation BLDCM. This system is highly flexible and can lay a foundation for the algorithms used in subsequent related research efforts.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Research on the flow performance of Airborne flame arrestor

Research on the flow performance of Airborne flame arrestor

引用

CSAA/IET International Conference on Aircraft Utility systems, AUS 2018

作者： Yangyang, Wang Jun, Pan Wenyi, Liu Lu, Wang Fuel System Department Nanjing Engineering Institute of Aircraft Systems AVIC The Aviation Electromechanical System Integration of Aviation Science and Technology Key Laboratory Nanjing China Deparatment of Technology Development Management and IT Nanjing Enginnering Institute of Aircraft Systems AVIC Nanjing China

ISBN: (纸本)9781785617911

Airborne flame arrestor, which can effectively prevent flame propagation and spread so as to earn more evacuating time for passengers and crew, has been widely applied in aircraft ventilation system. In this paper, five main forms of flame arrestor element are discussed and their advantages and disadvantages are analyzed. Flow performance of these elements is calculated. The results show that the flow performance of crimped ribbon, metallic honeycombs and Cellular ceramics types are better than that of parallel plate and perforated sheet. © 2018 IET Conference Publications. All rights reserved.

关键词： Ventilation

来源：评论

学校读者我要写书评

暂无评论

Analysis of the Influence of On-Board Temperature and Pressure Control system on Inert Gas Generating Performance of Hollow Fiber Membrane

引用

IOP Conference Series: Materials science and Engineering 2020年第1期751卷

作者： Jing-yang Zhang Bi-tai Luo Wen-chao Hu Ping Shen College of Astronautics Nanjing University of Aeronautics and Astronautics Nanjing 210016 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing Engineering Institute of Aircraft Systems Aviation Industry Corporation of China Nanjing 211106. China

Based on the typical on-board membrane separation system for fuel inerting, the mathematical models of temperature and pressure control subsystem and hollow fiber membrane were built with the coupled iterative numerical solution methods. While the temperature and pressure were controlled, the design area, nitrogen production effect of hollow fiber membranes were analyzed and compared with the situation of no temperature and pressure control in the full flight envelope by numerical simulation. Moreover, the root causes for those changes were found out. It shows that the method used in temperature and pressure control can increase the bleed air pressure and enhance the stability of temperature and pressure effectively. Compared with the situation of no temperature and pressure control, the temperature and pressure control method are able to decrease the demanded area of membrane by 42.3%~51.7%. And there is no need to adjust the membrane area for condition of low nitrogen production efficiency. But it also decreases the highest nitrogen production efficiency by 9.4% and increase the minimum oxygen concentration by 0.65%. The rate of flow has the most significant effect on nitrogen production. These phenomena are caused by the effects of the rate of flow, pressure, temperature and membrane area.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Study on Rotor Eddy Current Losses in High-speed Permanent Magnet Brushless Machines for Aircraft Applications

引用

IOP Conference Series: Materials science and Engineering 2020年第1期751卷

作者： Yaohua Hu Shushu Zhu Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing Engineering Institute of Aircraft Systems Nanjing 211106 China Center for More-Electric-Aircraft Power System Nanjing University of Aeronautics and Astronautics Nanjing 211106 China

To improve the power density of aviation electric drive system, the high-speed permanent magnet machines has more and more popular in the air compressor, radial compressor, and electro-hydrostatic actuator applications. Two methods have studied to reduce the rotor eddy current losses in high-speed permanent magnet machines in this paper. Firstly, rotor eddy current losses at different stator slot openings are investigated, the stator core loss are considered simultaneously. Secondly, to reduce the magnet eddy current loss in carbon fiber retaining sleeve, the copper shield is added between permanent and carbon fiber, and the rotor eddy current losses at different copper shield width are studied.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Analysis and correction of oil leakage of a hydraulic actuator

Analysis and correction of oil leakage of a hydraulic actuat...

引用

CSAA/IET International Conference on Aircraft Utility systems (AUS 2018)

作者： Bin Liu Qinghe Zhou Bang Li Jiakun Hu Nanjing Engineering Institute of Aircraft Systems Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (纸本)9781510872745

A batch of hydraulic actuators had an oil leakage failure. This paper introduces the sealing structure of oil seepage position and analyzes the reason of failure. After investigation, tests and comparison of the production process of the backup ring with Russian standard of the similar backup ring, we found that the size of the backup ring of the product is unstable. This paper proposes the improved measure. The test and product use demonstrate that the improved measure is effective, and the trouble of failure is eliminated completely.

关键词： Hydraulic actuator Leakage Backup ring

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：