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2024 CSAA/IET International Conference on aircraft Utility Systems, AUS 2024

作者： Li, Bingyu Liu, Xiaochao School of Automation Science and Electrical Engineering Beihang University Beijing100191 China National Key Laboratory of Aircraft Integrated Flight Control Beihang University Beijing100191 China Key Laboratory of Advanced Aircraft Systems Beihang University Ministry of Industry and Information Technology Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China Tianmushan Laboratory Hangzhou310023 China

The extensive utilization of aircraft as a mode of transportation and the accelerated expansion of the aviation market have imposed heightened expectations on airport scheduling capabilities. To enhance the efficacy of aircraft ground operations and diminish the duration of runway occupation, the analysis of aircraft motion characteristics and the management of their ground taxiing trajectories assume greater significance. This paper provides an overview of aircraft ground taxiing control technology. This paper provides a brief overview of the key parameters and trajectory prediction methods involved in the aircraft landing process. The nonlinear analysis theory is employed to introduce the aircraft brake system stability and heading stability. Subsequently, the results of significant research on ground skidding control laws are presented. The fourth section presents a summary of the issues and technological developments in aircraft ground skid run control and outlines future research priorities in anti-skid brake control. © The Institution of Engineering & technology 2024.

关键词： aircraft GROUND TAXI NONLINEAR control STABILITY ANALYSIS TRAJECTORY PREDICTION

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Multi-parameter load sensing pump model simulation and flow rate characteristics research

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Chinese Journal of Aeronautics 2022年第12期35卷 296-308页

作者： ZongXia JIAO Zhenyu WANG Xiaochao LIU HuJiang WANG Pengyuan QI Weizhi QIAO School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100083China State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Research Institute for Frontier Science Beihang UniversityBeijing100083China Science and Technology on Aircraft Control Laboratory Beihang UniversityBeijing 100083China Science and Technology on Vehicle Transmission Laboratory China North Vehicle Research InstituteBeijing 100072China Ningbo Institute of Technology Beihang UniversityNingbo 315800China

Load sensing pumps have been widely used in diverse hydraulic *** show that structural parameters have undeniable impacts on the characteristics and efficiency of the load sensing *** main purpose of this article is to study the influence of load sensing pump structure parameters on flow *** the present study,a nonlinear multi-parameter model is proposed for this type of *** this model,different parameters,including spool clearance,spool covering amount,internal leakage are considered to reflect the displacement adjustment process of the load sensing ***,a frequency sweep method is proposed to analyze the frequency domain of the nonlinear mathematical *** experiment rig was built to study the influence of key structural parameters on the dynamic follow-up characteristics of the pump *** obtained results show that the diameter of the orifice d can significantly affect the working characteristics of the *** is found that a large diameter of the orifice d can improve the phase following ability of the system,while a small diameter of the orifice d can reduce the bypass flow rate and increase the amplitude following *** paper provides a new consideration to study the dynamic follow-up characteristics of the load sensing pump.

关键词： Flow rate characteristics Frequency analysis Hydraulic Load sensing pump Nonlinear

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THE PARAMETER SENSITIVITY ANALYSIS ON THE DYNAMIC STIFFNESS OF THE ELECTRO-HYDROSTATIC ACTUATOR

THE PARAMETER SENSITIVITY ANALYSIS ON THE DYNAMIC STIFFNESS ...

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2024 CSAA/IET International Conference on aircraft Utility Systems, AUS 2024

作者： Renlei, Wei Shuai, Wu Bing, Chu Yuliang, Yang Jianing, Luo School of Automation Science and Electrical Engineering Beihang University Beijing100191 China National Key Laboratory of Aircraft Integrated Flight Control Beihang University Beijing100191 China Key Laboratory of Advanced Aircraft Systems Beihang University Ministry of Industry and Information Technology Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China Tianmushan Laboratory Hangzhou310023 China AVIC Shenyang Aircraft Design and Research Institute Shenyang110035 China

The electro-hydrostatic actuator (EHA) has the advantage of high power weight ratio, less leakage and the absence of throttle loss. It's used on the multi-electric aircraft and the all-electric aircraft. However, it will be affected by the aerodynamic load and the rudder flutter will occur if the dynamic stiffness of the EHA is low. As a result, it's significant to analyse the sensitivity of the EHA's parameters on the dynamic stiffness. The article builds a linear model of the EHA considering the leakage in the system. What's more, the local parameter sensitivity for the dynamic stiffness is calculated when the frequency is between 0.01 Hz and 1000 Hz. © The Institution of Engineering & technology 2024.

关键词： Sensitivity analysis

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Adaptive Learning of Human Driving Behavior for Nonlinear Vehicle Systems via Fuzzy Modelling

Adaptive Learning of Human Driving Behavior for Nonlinear Ve...

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2023 China Automation Congress, CAC 2023

作者： Yi, Ran Lin, Jie Wu, Huai-Ning School of Automation Science and Electrical Engineering Beihang University Beijing100191 China School of Automation Science and Electrical Engineering Beihang University The Science and Technology on Aircraft Control Laboratory Beijing100191 China The Peng Cheng Laboratory Shenzhen518000 China

ISBN: (纸本)9798350303759

Artificial intelligence hopes machines perform tasks in a way naturally like a human being, a useful approach is behavior cloning (BC), which makes the machine learn human behavior. This paper addresses the online learning problem of human behavior based on a nonlinear human-in-the-loop (HiTL) vehicle system, where the human driver is modeled by a fuzzy controller. First, a Takagi-Sugeno (T-S) fuzzy model is constructed for the nonlinear vehicle control system. And a control model based on the parallel distributed compensation (PDC) technique is used to describe the human driver's behavior. A concurrent learning (CL)-based online adaptive law is then designed to learn the fuzzy feedback gain matrices of the fuzzy control model. Compaired with traditional approaches, the CL-based law removes the persistent excitation (PE) condition, mekes it more suitable for complex nonlinear systems. Finally, the simulation results are provided to demonstrate the effectiveness of the approach. © 2023 IEEE.

关键词： Learning systems

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Optimization design and simulation of assembly line for aircraft’s door 3

Optimization design and simulation of assembly line for airc...

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2024 3rd International Conference on Aerospace and control Engineering, ICoACE 2024

作者： Chen, Yibeibei Wang, Zhaopeng Li, Bo Chen, Xiaoyun Liu, Xianglong School of Aeronautics and Astronautics University of Electronic Science and Technology of China Sichuan Chengdu611731 China Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province University of Electronic Science and Technology of China Sichuan Chengdu611731 China AVIC Chengfei Commercial Aircraft Co. Ltd. No. 358 Wenguang Road Sichuan Chengdu610091 China

Aiming at the problems of uneven production schedule and low production efficiency in the assembly process of aircraft doors of a civil aircraft company, the original aircraft door assembly line was modeled and simulated in FlexSim to analyze the reasons for the above problems. Depending on the assembly process and process constraints, blockage can be mitigated by adding or removing operators, merging stations, and introducing automated equipment. Due to the large footprint of automation equipment, and the lack of buffer area, the existing production line layout is insufficient to meet the requirements. Therefore, based on the system layout planning (SLP) method, all the stations in the assembly line are divided according to the operation unit, and the position of each operation unit is arranged according to the logistics intensity relationship to obtain the new workshop layout. Finally, the effectiveness of the automated SLP layout scheme is verified in FlexSim, and the capacity of the optimized aircraft door assembly line is significantly increased by simulating and comparing the original assembly line and the optimized assembly line, which provides support for further research on the aircraft door assembly line. © 2025 Institute of Physics Publishing. All rights reserved.

关键词： Assembly machines

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Adaptive Containment control for Uncertain Networked Agent Systems with Second-Order Dynamics 13

Adaptive Containment Control for Uncertain Networked Agent S...

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13th IEEE Data Driven control and Learning Systems Conference, DDCLS 2024

作者： You, Long Lin, Boxian Yue, Jiangfeng Shi, Mengji Qin, Kaiyu Ren, Zili School of Aeronautics and Astronautics University of Electronic Science and Technology of China Chengdu611731 China Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province Chengdu611731 China National Laboratory on Adaptive Optics Chengdu611731 China

ISBN: (纸本)9798350361674

This article proposes a neural network-based adaptive distributed containment controller for second-order integral multi-agent systems with nonlinear dynamics and external disturbances. Firstly, the proposed controller effectively suppresses the effects of nonlinear dynamics and external disturbances while achieving containment control. Secondly, for the adaptive update law of neural networks, unlike existing studies, we simultaneously consider the influence of position error and velocity error on the convergence speed of the weight matrix. Further, two positive definite matrices are constructed to prove the stability of the system based on Lyapunov theory, and the upper bound for the containment errors is provided. Finally, the effectiveness of the proposed method is verified through numerical simulation experiments. © 2024 IEEE.

关键词： Adaptive control systems

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Event-based Neuro-Adaptive Containment control for Uncertain Networked Agent Systems With External Disturbances 43

Event-based Neuro-Adaptive Containment Control for Uncertain...

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43rd Chinese control Conference, CCC 2024

作者： You, Long Lin, Boxian Yue, Jiangfeng Li, Weihao Shi, Mengji Qin, Kaiyu University of Electronic Science and Technology of China School of Aeronautics and Astronautics Chengdu611731 China Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province Chengdu611731 China National Laboratory on Adaptive Optics Chengdu610209 China

ISBN: (纸本)9789887581581

In this work, the robust containment control problem of uncertain networked agent systems is addressed. The dynamics of both the followers and the leaders involve uncertain nonlinear components. Theoretically, a neural network-based adaptive control scheme with the event-triggered mechanism is designed for the follower agents to approach the convex hull which is composed of the leader agents. Furthermore, a unified event-triggered mechanism is designed to ensure that the neural networks synchronize with the reduced update frequency of the robust controller, while ensuring that both are updated solely when the system error state reaches a predetermined triggering condition. The designed event-triggered containment control scheme minimizes unnecessary communication and computation resulting from periodic updates, thereby enhancing the efficiency of communication and computational resource utilization. Then, by utilizing the Lyapunov stability theorem, it is proven that all signals of the closed-loop system are globally uniformly ultimately bounded, and Zeno behavior is strictly excluded. Finally, the effectiveness of the proposed containment control scheme is verified through numerical simulation results. © 2024 Technical Committee on control Theory, Chinese Association of Automation.

关键词： Adaptive control systems

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Parameter Design Constraints of UDE-Based control under Non-ideal Actuators 41

Parameter Design Constraints of UDE-Based Control under Non-...

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第41届中国控制会议

作者： Linxi Xu Kaiyu Qin Yang Zhu Weihao Li Mengji Shi School of Aeronautics and Astronautics University of Electronic Science and Technology of China Aircraft Swarm Intelligent Sensing and Cooperative Control Key Laboratory of Sichuan Province

ISBN: (数字)9789887581536

ISBN: (纸本)9781665482561

This paper investigates the parameter design constraints on the classic UDE-based control framework imposed by the presence of actuator *** theoretical stability analysis of the closed-loop system,it is revealed that the UDE-based control is subject to a limited selection range of the filter parameter T_f when designed without considering the actuator ***,an explicit inequality is derived for T_f with respect to the feedback gains and actuator parameter,implying that a lower bound may exist on the value of T_*** practice,the filter parameter determines the bandwidth of UDE and plays an important role in the disturbance rejection ***,this paper provides a systematic parameter tuning guideline for the feedback gains and T_f to maximize the robustness of the system while maintaining *** numerical simulation results are demonstrated to verify the theoretical findings.

关键词： Uncertainty and Disturbance Estimator(UDE) Non-ideal Actuators Robust control Stability Conditions Parameter Tuning

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Magnetically controllable Liquid Metal Droplet Robots 16th

Magnetically Controllable Liquid Metal Droplet Robots

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16th International Conference on Intelligent Robotics and Applications, ICIRA 2023

作者： Zhao, Peiran Yan, Liang Gao, Xiaoshan Bu, Suwan School of Automation Science and Electrical Engineering Beihang University Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China Tianmushan Laboratory Hangzhou310023 China Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China

ISBN: (纸本)9789819965007

Magnetically actuated miniature robots exhibit great potential in lab-on-a-chip and biomedical applications. However, the existing soft robots made from elastomers have limited functionality and are unable to operate in very narrow environments such as channels much smaller than their size due to their limited deformability. Herein, a magnetically actuated millirobot based on liquid metal is proposed to address the above problems. The droplet robot is fabricated by mixing iron particles and a gallium-indium droplet. The static analysis of the robot is conducted, and the dynamic equation is established. The control strategy is analyzed, the experimental setup is designed, and related experiments are conducted. In the experiments, the droplet robot demonstrates remarkable flexibility and softness when navigating freely in narrow channels, allowing it to easily pass through confined spaces much smaller than its size. The demonstrated capabilities of the droplet present a promising potential for its application in lab-on-a-chip or biomedical devices. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.

关键词： Liquid metals

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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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