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检索条件"机构=Aviation Key Laboratory of Science and Technology On Aero-Electromechanical System Integration"

共 252 条记录，以下是41-50 订阅

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Research on auto-tuning of control parameters for aviation electro-hydrostatic actuator based on intelligent algorithm optimization

Research on auto-tuning of control parameters for aviation e...

引用

CSAA/IET International Conference on Aircraft Utility systems (AUS 2024)

作者： Yuxi Chen Lijun Chen Yeming Yao Xiaoping Wang Cheng Chang Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing People's Republic of China

ISBN: (数字)9781837242108

This paper takes the aviation Electro-hydrostatic Actuator (EHA) as the research object, analyses its working principle and structural characteristics, establishes mathematical models for the drive motor, pump and cylinder, and builds a simulation model based on MATLAB/Simulink. Addressing the issues of strong nonlinearity, cumbersome manual tuning of PI parameters under strong disturbances, and poor control effects in the EHA systems, this paper proposes an auto-tuning method for PI control parameters based on improved Bayesian optimization. A comparative analysis is conducted with traditional manual tuning methods and RF methods. According to simulation comparison results, the proposed method outperforms traditional tuning methods in terms of robustness and rapidity.

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Cooperative Control Strategy of Triple Redundant Motor Based on Virtual Impedance 6

Cooperative Control Strategy of Triple Redundant Motor Based...

引用

6th IEEE International Electrical and Energy Conference, CIEEC 2023

作者： Hu, Zhenwei Yaohua Jiang, Renhua Pan, Zhiwei Zhu, Shushu College of Automation Nanjing University of Aeronautics and Astronautics Nanjing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China Leihua Electronic Technology Research Institute Avic Wuxi China

ISBN: (纸本)9798350346671

The motor for electromechanical actuator has high reliability requirements. This paper studies a triple redundancy permanent magnet synchronous motor with winding redundancy structure. However, the triple redundancy system has the problem of asymmetric channel parameters, which leads to unbalanced winding phase current and affects the reliability of the triple redundancy permanent magnet synchronous motor. In this paper, the possible consequences of parameter asymmetry are analyzed. Aiming at the problem of stator current imbalance caused by parameter asymmetry, a cooperative control strategy based on virtual impedance is proposed. The control strategy compensates the parameters through the virtual impedance adjustment module, which can reduce or even eliminate the parameter asymmetry and realize the balanced control of the winding phase current. At the same time, a Simulink model is built to verify the effectiveness of the control algorithm. Finally, the hardware drive platform and software control algorithm based on YXSpace 2000 semi-physical simulator are built for experimental verification. © 2023 IEEE.

关键词： Redundancy

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RESEARCH ON DAMAGE LOCALIZATION TECHNIQUES FOR REUSABLE CARRIER TANK STRUCTURES

RESEARCH ON DAMAGE LOCALIZATION TECHNIQUES FOR REUSABLE CARR...

引用

2024 CSAA/IET International Conference on Aircraft Utility systems, AUS 2024

作者： Ben, Xu Mei, Yuan Shaopeng, Dong Jiutian, Zhang Fuel System Department Nanjing Engineering Institute of Aircraft Systems AVIC Nanjing China School of Automation Science and Electrical Engineering Beihang University Beijing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China Ningho Institute of Technology Beihang University Ningbo China

Lamb waves, characterized by slow attenuation, short wavelength, and sensitivity to damage, have been widely utilized in the field of composite material damage detection. In addressing the issue of damage localization in composite curved tank structures, this study proposes a composite tank localization algorithm based on convolutional neural networks (CNNs) using Lamb wave data. The approach transforms the damage localization regression problem into a classification problem through partitioning, achieving damage zone localization in composite tank structures with fewer sensors. The accuracy of the algorithm is more than 98% in the dataset constructed from physical experiments, which verifies its accuracy and applicability. © The Institution of Engineering & technology 2024.

关键词： Tanks (containers)

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Fault Redundancy Active Removal Fault-tolerant Strategy for Triple-redundancy PMSMs 6

Fault Redundancy Active Removal Fault-tolerant Strategy for ...

引用

6th IEEE Student Conference on Electric Machines and systems, SCEMS 2023

作者： Pan, Zhiwei Hu, Yaohua Zhu, Shushu Nanjing University of Aeronautics and Astronautics College of Automation Engineering Nanjing China Nanjing Engineering Institute of Aircraft Systems Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing211106 China

ISBN: (纸本)9798350329346

The reliability requirements of the aviation electromechanical actuator system are high, and the three-redundancy motor is often used to provide reliable propulsion power. The triple-redundancy PMSMs is composed of a nine-phase stator winding and a permanent magnet rotor. When a redundancy fails, the fault redundancy is actively removed, and the use of other redundancy can still maintain the normal operation of the system to ensure that the entire system can maintain normal operation. However, the traditional 3-dq modeling method ignores the mutual inductance and flux linkage coupling between different windings, and it is difficult to achieve a smooth transition of redundancy removal. The purpose of this paper is to propose a decoupling control method for multi-stator modeling, which eliminates the cross-coupling of mutual inductance between redundancy and retains the modular control characteristics of 3-dq decoupling. When one or two redundant faults occur, the fault winding is actively removed to reduce the dynamic transition time of speed and torque during redundancy switching and realize the smooth transition of fault winding removal. © 2023 IEEE.

关键词： Redundancy

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Measurement-based Path Loss Prediction and Analysis in Water Scenarios

Measurement-based Path Loss Prediction and Analysis in Water...

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2024 IEEE International Conference on Computational Electromagnetics, ICCEM 2024

作者： Li, Hanpeng Chen, Xiaomin Li, Hangang Ma, Jian Ye, Xuchao Song, Lixin Zhang, Taotao Zhong, Weizhi Zhu, Qiuming Nanjing University of Aeronautics and Astronautics College of Electronic and Information Engineering Nanjing211106 China Aviation Key Laboratory of Science and Technology On Aero Electromechanical System Integration Nanjing211106 China State Key Lab. of Complex Electromagnetic Environment Effects On Electronics and Information System Luoyang471003 China

ISBN: (纸本)9798350383317

Unmanned aerial vehicles (UAVs) have enabled the unmanned management of water areas. Path loss (PL) serves as a critical factor that affects the UAV communication quality. In this work, a PL model for UAV channel in water scenarios is proposed, aiming to explore the multidimensional relationship between transceiver distance, carrier frequency, UAV height, and PL by constructing an Artificial Neural Network (ANN). Moreover, channel measurements are conducted in a river area, and the obtained data are analyzed using the proposed ANN model as well as the close-in (CI) model. The analysis results demonstrates that the PL increases initially and then declines as the UAV height increases. The proposed ANN model has higher prediction accuracy than the classic empirical model, and can achieve precise prediction of the PL in water scenarios. © 2024 IEEE.

关键词： Neural networks

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Modeling and validation of key components of thermal management systems

Modeling and validation of key components of thermal managem...

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2024 CSAA/IET International Conference on Aircraft Utility systems, AUS 2024

作者： Zekun, Mei Shuai, Xu Fanxin, Meng Guangya, Zhu Dalin, Zhang Weijian, Chen Key Laboratory of Aircraft Environment Control and Life Support MIIT Nanjing University of Aeronautics and Astronautics Nanjing China 805th Research Institute of China Aerospace Science and Technology Corporation Shanghai China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration No.33 Shuige Road Nanjing China

ISBN: (数字)9781837242108

In this paper, two key components of thermal management system are modeled by the underlying logic operation of SIMULINK. Simulink-PS signal conversion module is used to connect the electric grid and the calculation part of the heat grid to build the fuel tank heat grid model. The temperature transient simulation model of phase-change heat exchanger was established by using the integral module in Simulink library. Experimental verification and literature data verification are provided for these two components. The results show that the error between simulation results and experimental data is between 0.1% and 3%, which proves the accuracy and feasibility of the system modeling in this paper. It lays a foundation for the simulation of the overall thermal management scheme. © The Institution of Engineering & technology 2024.

关键词： Fuel tanks

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Study on the relationship between the friction pairs wear and the plunger fracture

Study on the relationship between the friction pairs wear an...

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CSAA/IET International Conference on Aircraft Utility systems (AUS 2024)

作者： Pengjian Zou Haoran Zhang Jianning Gu Tianxiang Xia Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing 211106 People's Republic of China

ISBN: (数字)9781837242108

The plunger pump is one of the most complicated hydraulic components, the fault reason is hidden, the traditional analysis method such as theoretical formula is difficult to study its fault principle and correlation. In some cases of plunger pump failure, the fracture of the plunger is usually accompanied by serious wear of plunger and sliding shoe. In order to study the correlation between kinematic pairs wear and plunger fracture, a flexible-solid coupling dynamic digital prototype of plunger pump is built, which takes into account the action of hydraulic pressure and rotating load in a rotating cycle. The friction force of the friction pair is considered by modifying the contact method of the friction surface of kinematic pair. The simulation results show that the plunger pair wear leads to the increase of supporting force of sliding shoes, the wear of plunger and sliding shoe leads to the sharp increase of stress of plunger neck, the wear of kinematic pair is related to the plunger fracture.

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Failure Analysis and Improved Design on the Fuel Pipeline Under Random Vibration Loading Based on Frequency Domain Method

Failure Analysis and Improved Design on the Fuel Pipeline Un...

引用

2022 CSAA/IET International Conference on Aircraft Utility systems, AUS 2022

作者： Jiang, Wen Hu, Tang Li, Wei Xiao, Ming Nanjing Engineering Institute of Aircraft Systems AVIC Nanjing China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing China

ISBN: (数字)9781839537769

ISBN: (纸本)9781839537769

The fuel system will suffer fatigue damage due to the vibration environment during service. In this paper, failure analysis is carried out on the fractured fuel pipelines in the vibration endurance qualification test of airframe structure. The metallographic analysis results show that the two broken pipelines are fractured by fatigue. Based on the frequency domain method of vibration fatigue life prediction, the life of the failed pipeline is evaluated. Compared with the test results, the evaluation results are within twice scatter band. Therefore, the spectral method is feasible and accurate to evaluate the vibration resistance life of fuel pipelines. The improved design of the pipeline structure was conducted, and the fatigue life evaluation of the improved structures shows that the vibration life is significantly improved. Longer fuel lines are suitable to be improved by adding constraints to limit the modal displacement. While shorter fuel lines are suitable to be bent to increase the length of the pipe, which can reduce the disturbance at the root of the pipe. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Failure analysis

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Exploration of the design method of fuel pump parts structure optimization

Exploration of the design method of fuel pump parts structur...

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CSAA/IET International Conference on Aircraft Utility systems (AUS 2024)

作者： Cui Zongtai Shen Xun Gu JingXian Yang Yang Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing 211106 People's Republic of China

ISBN: (数字)9781837242108

With the continuous improvement of performance requirements for aircraft combat, transportation, and power, the weight requirements for aircraft are becoming increasingly stringent, and the demand for lightweight design of aircraft accessories is becoming increasingly urgent. The aviation fuel pump is the core component of the aircraft fuel system. It is of great significance to reduce the mass of redundant structures and improve the power to weight ratio of pumps while ensuring structural strength. Traditional fuel pump design mainly relies on the designer's experience in selecting structural forms and determining parameters. With the development of technology, especially finite element technology, important methods and means have been provided for strength analysis in the design process of fuel pump structures. However, in terms of design methods, pump design has not yet broken through the limitations of traditional empirical design, such as the determination of structural topology, selection of shape, and optimization of structural size parameters. This article explores the commonly used methods of structural optimization design, with a focus on introducing topology optimization theory and its applications . It takes the structural optimization design of a certain type of fuel pump component as the research object, in order to provide some theoretical reference for future fuel pump structural design optimization.

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Review Of Research Progress And Application Of Magnetic Resonant Wpt technology

Review Of Research Progress And Application Of Magnetic Reso...

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2022 CSAA/IET International Conference on Aircraft Utility systems, AUS 2022

作者： Chen, Wenxian AVIC Nanjing Engineering Institute of Aircraft System Aviation Key Laboratory of Science and Technology Nanjing211106 China Aero Electromechanical System Integration Nanjing211106 China

ISBN: (数字)9781839537769

ISBN: (纸本)9781839537769

Compared with traditional contact charging, wireless power transfer technology (WPT) has the advantages of convenience and flexibility, strong environmental adaptability, safety and reliability, and has attracted the research interest of a large number of researchers. Among them, the resonant wireless power transmission technology has good application value because of its long transmission distance and high-efficiency energy transmission characteristics, and is one of the important development directions in the field of wireless power transmission. This paper mainly introduces the concept and classification of wireless power transmission technology, reviews the development history of resonant WPT technology, and summarizes the basic structure and working principle of resonant WPT technology, hot technical issues, and product development and practical application status. It is pointed out that the resonant network including the non-contact transformer is the key to restrict the whole resonant WPT system. © 2022 IET Conference Proceedings. All rights reserved.

关键词： Inductive power transmission

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