检索结果-内蒙古大学图书馆

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

作者： Run Dong Qiaoying Zhang Xiaohua Wu Weilin Li Ting Wang Shuxian Li Xiaoli Duan Yang Yang Key Laboratory of Aviation Electric Propulsion Technology Ministry of Industry and Information Technology of China Department of Electrical Engineering Northwestern Polytechnical University Xi'an China Key Laboratory of Aviation Science and Technology on Aerospace Power System Shaanxi Aero Electric Co. Ltd Xi'an China

ISBN: (纸本)9781510872745

More-electric aircraft is the inevitable developing trend of future. The electrical system is coupled of different areas subsystems, such as mechanical, electrical, and control etc. Multidomain simulation technology meets the demand of electrical system of the multi-domain integrated modeling. This paper has completed the modeling of multi-electric aircraft electrical system based on Dymola and FMI generalization interface protocol. According to the overall system design requirements, a co-simulation method based on FMI standard protocol interfaces is proposed, which is used to model and simulate typical constant power load. It is verified that the electrical system can be automatically distributed and reorganized under different working conditions. The high reliability design requirement of multi-electric aircraft is guaranteed. This provides important support for the research and design of multi-electric aircraft.

关键词： Multi-electric aircraft Multi-domain modeling Dymola FMI

来源：评论

学校读者我要写书评

暂无评论

Design and Analysis of All-electric Aircraft Nose Wheel Steering system Based on Intelligent Algorithm

Design and Analysis of All-electric Aircraft Nose Wheel Stee...

引用

2017 2nd International Conference on Applied Mechanics and Mechatronics Engineering(AMME 2017)

作者： Ming ZHANG Meng-jiao LENG Xin WU Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle Nanjing University of Aeronautics & Astronautics Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration

As all-electric aircraft has many advantages, aircraft nose wheel steering system would be developed to the all-electric direction. Aiming at the control demand of nose wheel steering system, based on the basic principles of nose wheel steering system and the design technique of mechanotronics, an all-electric aircraft nose wheel steering system composed of a nose wheel steering mechanism of two worm gear and a control servo system of fly-by-wire having both steering and anti-shimmy function is designed to meet the demand for operation control in nose wheel steering system. Besides, the fuzzy algorithm and BP neural network algorithm is applied to the control system to explore its algorithm. Then based on Matlab/Simulink and LMS/AMESim software, the united simulation model of the system with fuzzy PID controller is established to make the dynamic simulation analysis for the verification of its steering function, the research results indicate that the nose wheel steering system is reasonable and validated, can meet the requirements of the general project.

关键词： Mechanotronics design United simulation analysis Nose wheel steering system Landing gear

来源：评论

学校读者我要写书评

暂无评论

Study on the Method of Thermal Prediction for Electronic Wing Pod Cabin

Study on the Method of Thermal Prediction for Electronic Win...

引用

Annual Conference of the IEEE Industrial Electronics Society

作者： Yang Chao Pang Liping Wang Jun Zhou Yue Qu Hongquan School of Aviation Science and Engineering Beihang University Beijing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China College of Information Engineering North China University of Technology Beijing China

For airborne electronic equipment, temperature is the most important factor affecting its performance, so it is very important to invest its dynamic temperature response process in a flight environment. By analyzing the heat exchange relationship between different devices in an electronic wing pod cabin, a temperature prediction method for electronic pod cabin based on the Random Vector Functional Link (RVFL) neural network is proposed in this paper. This method can complete a construction of prediction model using small amount of data. Hence it can realize a quick temperature response prediction only with the initial temperature values, and ensure relative high prediction accuracy.

关键词： Temperature measurement Biological neural networks Predictive models Turbines Temperature distribution Training

来源：评论

学校读者我要写书评

暂无评论

Moisture prediction for civil aircraft cabin

Moisture prediction for civil aircraft cabin

引用

2016 IEEE/CSAA International Conference on Aircraft Utility systems, AUS 2016

作者： Kun, Luo Liping, Pang Helin, Zhang Beijing100191 China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing Engineering Institute of Aircraft Systems Nanjing211102 China

ISBN: (纸本)9781509010875

Relative humidity level affects cabin comfort of civil aircraft. In this paper, a prediction method of relative humidity was developed based on a well-mixed zonal model. To improve the prediction accuracy, a Lumped Virtual Moisture Source (LVMS) and its two-node moisture transfer model were established to describe a moisture desorption-Absorption process of the total of interiors materials in a simple way. The conception of lumped moisture capacity and lumped moisture resistance was firstly introduced to represent moisture storage capability and moisture transfer resistance for the total interior materials. A parameter identification procedure was further presented to obtain these two model parameters of LVMS for different types of civil aircrafts using measured data onboard. Cabin environmental measurements were carried out in five types of civil aircrafts. Compared with continuously measured data during flight, the method to predict the cabin relative humidity can adapt to different types of aircrafts and agree with measured data well. This study may provide some help to develop a reasonable humidity control strategy and suggest proper water storage of humidifier. © 2016 IEEE.

关键词： Humidity control

来源：评论

学校读者我要写书评

暂无评论

Design and Experimental Evaluation of PID Controller for Digital Electro-Pneumatic Cabin Pressure Control system

引用

Transactions of Nanjing University of aeronautics and Astronautics 2016年第5期33卷 576-583页

作者： Nie Jinfang Pan Quan Shen Hao Song Zhitao Zhang Dalin College of Automation Northwestern Polytechnical University Xi'an 710072 P.R. China Shanghai Aircraft Airworthiness Certification Center of CAAC Shanghai 200335 P.R. China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing University of Aeronautics and Astronautics Nanjing 210016 P.R. China

The performance of the designed digital electro-pneumatic cabin pressure control system for the cabin pressure schedule of transport aircraft is *** the purpose of this study,an experimental setup consisting of a simulated hermetic cabin and altitude simulation chamber is configured for cabin pressure control system operation.A series of experimental tests are executed to evaluate the performance of the cabin pressure control *** parameters of the PID controller are *** the optimization process,the variation regularity of the rate of cabin pressure change under various conditions is *** approach to prioritize the control of the rate of change of cabin pressure based on the flight status model is proposed and verified *** experimental results indicate that the proposed approach can be adopted for the designed digital electro-pneumatic cabin pressure control system to obtain a better cabin pressure schedule and rate of cabin pressure change.

关键词： cabin pressure control digital electro-pneumatic PID controller

来源：评论

学校读者我要写书评

暂无评论

The study on power generation technology by heat energy of reheated-based Rankine cycle

The study on power generation technology by heat energy of r...

引用

2016 4th International Conference on Machinery,Materials and Computing technology(ICMMCT 2016)

作者： Xuejuan Zhao Aicheng Li School of Aeronautic Science Engineering Beihang University Aviation Key Laboratory of Science and Technology On Aero Electromechanical System Integration

ISBN: (纸本)9781510821934

This paper discussed the operation principle of reheated Rankine cycle according to the first law of thermodynamics and proposed a method to acquire the optimum reheated pressure ratio based on the highest cycle thermal efficiency. In order to verify the rationality and validity of this method, this paper selected R134 a, R11 and R227 ea to be the working fluids and calculated the thermodynamic performance of the reheated Rankine cycle system with using MATLAB and REFPROP. This paper also studied the thermodynamic performance of the conventional Rankine cycle system under the same conditions to compare the difference with the reheated cycle pattern.

关键词： reheated Rankine cycle average temperature of heat absorption optimum reheated pressure ratio thermodynamic performance

来源：评论

学校读者我要写书评

暂无评论

Input-Parallel Output-Series DC/AC Converter for On-Board EV Charger

Input-Parallel Output-Series DC/AC Converter for On-Board EV...

引用

IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Yue Zhang Zheng Wang Ming Cheng Liang Xu School of Electrical Engineering Southeast University China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration China

ISBN: (纸本)9781509035298

An input-parallel output-series full-bridge DC/AC converter for on-board Electric Vehicle (EV) charger is proposed in this paper with the merits that low input current ripple and output voltage ripple. It can also decrease the current stress on the primary side devices and voltage stress on secondary side devices. This proposed DC/AC converter interleaves two isolated full-bridge converters with parallel input and series output connection. The DC/DC converter is followed by a current-fed inverter with inductor link. The merits such as high voltage turn ratio make the converter suitable for EV on-board chargers. Steady-state operation modes, analysis, simulation results are presented in this paper. A 1KW laboratory prototype is built to demonstrate the validity of the proposed topology. The results of experiment demonstrate the validity of proposed topology well.

关键词： Inverters Inductors Stress Voltage control Topology Modulation Bridge circuits

来源：评论

学校读者我要写书评

暂无评论

Application of Class-E Converter in Magnetic Resonant WPT system

Application of Class-E Converter in Magnetic Resonant WPT Sy...

引用

2016 IEEE/CSAA International Conference on Aircraft Utility systems(AUS)

作者： CHEN Wen-xian CHEN Qian-hong Nanjing Engineering Institute of Aircraft System/Aviation Key Laboratory of Science and Technology on Aero Electromechanical system integration IEEE Nanjing University of Aeronautics and Astronautics

In this paper,the maximum voltage gain and output power design method based on the optimal distance point is also put ***,the research on the efficiency evaluation in Class-E converter based on GaN devices has shown that GaN transistor can obviously brings higher transmission efficiency,smaller size and lower cost in Class-E converter due to the lower R and the gate charge（Qg）.

关键词： magnetic resonance WPT wireless power transfer Class-E converter GaN transistor

来源：评论

学校读者我要写书评

暂无评论

Direct torque control of dual three-phase PMSM drives based on two-step voltage vector synthesis SVM

Direct torque control of dual three-phase PMSM drives based ...

引用

International Conference on Power Electronics and Motion Control (IPEMC)

作者： Xueqing Wang Zheng Wang Jian Chen Ming Cheng Liang Xu School of Electrical Engineering Southeast University Nanjing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (纸本)9781509012114

In this paper, a space vector modulation (SVM) based DTC scheme is proposed for the dual three-phase PMSM. This scheme provides an effective solution for multiphase drives by inheriting the advantages of fast dynamic performance and robust control architecture of DTC. Besides, the proposed scheme can suppress the current harmonics induced not only from inherent property of dual three-phase PMSM, but also from nonlinear factors such dead-time and asymmetry in drives. The vector synthesis process in the scheme has been simplified compared to conventional SVM-DTC scheme. The experimental results are given to verify the validity of the proposed SVM-DTC scheme.

关键词： Harmonic analysis Support vector machines Switches Stators Voltage control Torque Power electronics

来源：评论

学校读者我要写书评

暂无评论

Application of class-E converter in magnetic resonant WPT system

Application of class-E converter in magnetic resonant WPT sy...

引用

IEEE International Conference on Aircraft Utility systems (AUS)

作者： Wen-Xian Chen Qian-Hong Chen Aviation Key Laboratory of Science and Technology on Aero Electromechanical system integration Nanjing Engineering Institute of Aircraft System Nanjing China Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu CN

ISBN: (纸本)9781509010882

In this paper, the maximum voltage gain and output power design method based on the optimal distance point is also put forward. Meanwhile, the research on the efficiency evaluation in Class-E converter based on GaN devices has shown that GaN transistor can obviously brings higher transmission efficiency, smaller size and lower cost in Class-E converter due to the lower R ds(on) and the gate charge (Q g ).

关键词： Magnetic resonance Gallium nitride MOSFET RLC circuits Resistance Switches Inductors

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：