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Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
《信息与电子工程前沿(英文)》 2019年 第20卷 第1期 页码 76-87 doi: 10.1631/FITEE.1800557
Our study is concerned with the time-varying formation tracking problem for second-order multi-agent systems that are subject to unknown nonlinear dynamics and external disturbance, and the states of the followers form a predefined time-varying formation while tracking the state of the leader. The total uncertainty lumps the unknown nonlinear dynamics and the external disturbance, and is regarded as an extended state of the agent. To estimate the total uncertainty, we design an extended state observer (ESO). Then we propose a novel ESO based time-varying formation tracking protocol. It is proved that, under the proposed protocol, the ESO estimation error and the time-varying formation tracking error can be made arbitrarily small. An application to the target enclosing problem for multiple unmanned aerial vehicles (UAVs) verifies the effectiveness and superiority of the proposed approach.
关键词: Multi-agent system Time-varying formation Formation tracking Nonlinear dynamics Extended state observer (ESO)
考虑量化输入信号的多智能体系统自适应输出反馈编队跟踪控制 None
Jing-lin HU, Xiu-xia SUN, Lei HE, Ri LIU, Xiong-feng DENG
《信息与电子工程前沿(英文)》 2018年 第19卷 第9期 页码 1086-1097 doi: 10.1631/FITEE.1601801
无人机仿射编队跟踪控制研究 Research Articles
李慧铭,陈浩,王祥科
《信息与电子工程前沿(英文)》 2022年 第23卷 第6期 页码 909-919 doi: 10.1631/FITEE.2100109
本文聚焦固定翼无人机集群仿射编队跟踪控制问题,其中固定翼无人机被建模为具有非对称速度约束的独轮车。无人机集群控制目标是生成并跟踪一个由名义编队仿射变换得到的时变目标编队。针对这一目标,在领航跟随者编队控制框架下,提出一种基于应力矩阵的分布式编队控制策略,并从理论上证明,跟随者在跟踪不同飞行轨迹的同时,能够收敛到由领航者位置决定的期望位置,实现编队队形的仿射变换。进一步,为满足固定翼无人机飞行速度约束,提出一种基于饱和函数的控制策略。数值仿真结果证实,所提仿射编队控制策略能有效提高机动性。
关键词: 仿射编队;固定翼无人机;多智能体系统
Output tracking control of mobile manipulators based on dynamical sliding-mode control
WUYuxiang, FENG Ying, HU Yueming
《机械工程前沿(英文)》 2007年 第2卷 第1期 页码 110-115 doi: 10.1007/s11465-007-0019-5
关键词: lower-dimensional nonlinear trajectory tracking diffeomorphism
Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances
Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,
《工程(英文)》 doi: 10.1016/j.eng.2023.05.017
关键词: Unmanned aerial vehicle Visual servoing Velocity observer Target tracking
Wheel tracking methods to evaluate moisture sensitivity of hot-mix asphalt mixtures
Jie HAN,Harihar Shiwakoti
《结构与土木工程前沿(英文)》 2016年 第10卷 第1期 页码 30-43 doi: 10.1007/s11709-016-0318-1
关键词: hot-mix asphalt moisture sensitivity rutting wheel tracking test
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
《机械工程前沿(英文)》 2017年 第12卷 第2期 页码 203-214 doi: 10.1007/s11465-017-0421-6
Predictive models for machining operations have been significantly improved through numerous methods in recent decades. This study proposed a 3D finite element modeling (3D FEM) approach for the micro end-milling of Al6061-T6. Finite element (FE) simulations were performed under different cutting conditions to obtain realistic numerical predictions of chip flow, burr formation, and cutting forces. FE modeling displayed notable advantages, such as capability to easily handle any type of tool geometry and any side effect on chip formation, including thermal aspect and material property changes. The proposed 3D FE model considers the effects of mill helix angle and cutting edge radius on the chip. The prediction capability of the FE model was validated by comparing numerical model and experimental test results. Burr dimension trends were correlated with force profile shapes. However, the FE predictions overestimated the real force magnitude. This overestimation indicates that the model requires further development.
关键词: 3D finite element modeling micro end-milling cutting force chip formation burr formation
《环境科学与工程前沿(英文)》 2022年 第16卷 第7期 doi: 10.1007/s11783-021-1494-3
• A Passive Aeration Ditch was developed to treat decentralized wastewater.
关键词: Decentralized wastewater Passive aeration ditch Biofilm formation C/N ratio Salinity Model simulation
Fractional order extremum seeking approach for maximum power point tracking of photovoltaic panels
Ammar NEÇAIBIA,Samir LADACI,Abdelfatah CHAREF,Jean Jacques LOISEAU
《能源前沿(英文)》 2015年 第9卷 第1期 页码 43-53 doi: 10.1007/s11708-014-0343-5
关键词: extremum seeking (ES) fractional order control (FOC) fractional calculus photovoltaic (PV) panel maximum power point tracking (MPPT)
Is atmospheric oxidation capacity better in indicating tropospheric O formation?
《环境科学与工程前沿(英文)》 2022年 第16卷 第5期 doi: 10.1007/s11783-022-1544-5
● This study summarizes and evaluates different approaches that indicate O3 formation.
关键词: O3 AOC O3 formation regime
Formation mechanism and modeling of surface waviness in incremental sheet forming
《机械工程前沿(英文)》 2022年 第17卷 第2期 doi: 10.1007/s11465-022-0679-1
关键词: surface waviness incremental sheet forming numerical simulation formation mechanism deformation history
New insights into the formation of ammonium nitrate from a physical and chemical level perspective
《环境科学与工程前沿(英文)》 2023年 第17卷 第11期 doi: 10.1007/s11783-023-1737-6
● Factor analysis of ammonium nitrate formation based on thermodynamic theory.
关键词: Ammonium nitrate formation Thermodynamic theory Aerosol liquid water content Source apportionment
Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA
《能源前沿(英文)》 2015年 第9卷 第2期 页码 170-179 doi: 10.1007/s11708-015-0353-y
关键词: photovoltaic module DC-DC converter design maximum power point tracking (MPPT) card microprocessor
Task-space position/attitude tracking control of FAST fine tuning system
QI Lin, ZHANG Hui, DUAN Guanghong
《机械工程前沿(英文)》 2008年 第3卷 第4期 页码 392-399 doi: 10.1007/s11465-008-0056-8
关键词: telescope five-hundred end-effector controller simulation
Tacholess order-tracking approach for wind turbine gearbox fault detection
Yi WANG, Yong XIE, Guanghua XU, Sicong ZHANG, Chenggang HOU
《机械工程前沿(英文)》 2017年 第12卷 第3期 页码 427-439 doi: 10.1007/s11465-017-0452-z
Monitoring of wind turbines under variable-speed operating conditions has become an important issue in recent years. The gearbox of a wind turbine is the most important transmission unit; it generally exhibits complex vibration signatures due to random variations in operating conditions. Spectral analysis is one of the main approaches in vibration signal processing. However, spectral analysis is based on a stationary assumption and thus inapplicable to the fault diagnosis of wind turbines under variable-speed operating conditions. This constraint limits the application of spectral analysis to wind turbine diagnosis in industrial applications. Although order-tracking methods have been proposed for wind turbine fault detection in recent years, current methods are only applicable to cases in which the instantaneous shaft phase is available. For wind turbines with limited structural spaces, collecting phase signals with tachometers or encoders is difficult. In this study, a tacholess order-tracking method for wind turbines is proposed to overcome the limitations of traditional techniques. The proposed method extracts the instantaneous phase from the vibration signal, resamples the signal at equiangular increments, and calculates the order spectrum for wind turbine fault identification. The effectiveness of the proposed method is experimentally validated with the vibration signals of wind turbines.
关键词: wind turbine variable-speed operating conditions Vold-Kalman filtering tacholess order tracking
标题 作者 时间 类型 操作
Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems
Mao-peng RAN, Li-hua XIE, Jun-cheng LI
期刊论文
Output tracking control of mobile manipulators based on dynamical sliding-mode control
WUYuxiang, FENG Ying, HU Yueming
期刊论文
Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances
Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,
期刊论文
Wheel tracking methods to evaluate moisture sensitivity of hot-mix asphalt mixtures
Jie HAN,Harihar Shiwakoti
期刊论文
3D finite element prediction of chip flow, burr formation, and cutting forces in micro end-milling of
A. DAVOUDINEJAD, P. PARENTI, M. ANNONI
期刊论文
Mechanistic insight into the biofilm formation and process performance of a passive aeration ditch (PAD
期刊论文
Fractional order extremum seeking approach for maximum power point tracking of photovoltaic panels
Ammar NEÇAIBIA,Samir LADACI,Abdelfatah CHAREF,Jean Jacques LOISEAU
期刊论文
New insights into the formation of ammonium nitrate from a physical and chemical level perspective
期刊论文
A comprehensive simulator for assessing the reliability of a photovoltaic panel peak power tracking system
Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA
期刊论文
Task-space position/attitude tracking control of FAST fine tuning system
QI Lin, ZHANG Hui, DUAN Guanghong
期刊论文