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Resolution method for overlapping peaks based on the fractional-order differential

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Science china Chemistry 2007年第6期50卷 797-805页

作者： LI YuanLu1, YU ShengLin2 & ZHENG Gang2 1 college of Information & Control, nanjing university of Information Science & Technology, nanjing 210044, china 2 college of automation engineering, nanjing university of aeronautics and astronautics, nanjing 210016, china 1. college of Information & Control Nanjing University of Information Science & Technology Nanjing 210044 China 2. college of automation engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

Equations between the differential order and the maximum of the fractional-order differential for the specified peak signals are developed based on the variation of the maximum of the specified peak signals at different orders. Also, equations between the differential order and the zero-crossing of the fractional-order differential of the specified peak signals are proposed according to the variation of the zero-crossing of the specified peak signals at different orders. Characteristic paramters of the Gaus- sian peak, Lorentzian peak, and Tsallis peak can be estimated using estimator I and estimator II which are obtained by the equations above. As a result, a new method is presented to resolve the overlapped peaks signal. Firstly, a fractional-order differential of the specified peak signals is obtained with the fractional-order differentiation filter. Then, characteristic paramters of the specified peak signals can be extracted using estimator I and estimator II. Finally, the Tsallis peak is used as a model to assign the overlapping peak signals correctly. Experimental results show that the proposed method is efficient and effective for the simulated overlapping peaks and detected overlapping voltammetric peak signals.

关键词： fractional-order differentiation filter, fractional-order differential, overlapping peaks, voltammetric peak

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高低温环境下摩擦系数的高准确度测试

数据采集与处理 2004年第1期19卷 111-114页

作者：吴惠祥杨忠毛万华南京航空航天大学航空宇航学院南京210016 南京航空航天大学自动化学院南京210016 南京航空航天大学理学院南京210016

在航空要求的高低温环境下 (-5 5～ +1 2 5℃ ) ,为实现摩擦系数与接触电阻的高准确度测试 ,本文研制了适合于在高低温环境下测试摩擦件摩擦系数与接触电阻的测试试验台。通过对试验件载荷和摩擦力矩的测量 ,测量出试验件在不同温度及... 详细信息

在航空要求的高低温环境下 (-5 5～ +1 2 5℃ ) ,为实现摩擦系数与接触电阻的高准确度测试 ,本文研制了适合于在高低温环境下测试摩擦件摩擦系数与接触电阻的测试试验台。通过对试验件载荷和摩擦力矩的测量 ,测量出试验件在不同温度及不同载荷下的摩擦系数与接触电阻 ,用试验及曲线拟合方法研究并解决了力传感器的温度补偿问题。为提高测试精度 ,对测试系统的硬件和软件进行了抗干扰优化设计 ,通过对某航空产品的试验 ,数据显示测试台的测试精度达 4%。

关键词：机械零部件摩擦系数高准确度测试接触电阻

Studying on the Fuzzy-QFD System Based on Database Class Encapsulation Technology

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武汉理工大学学报 2006年第S1期28卷 388-392页

作者： FANG Xifeng1,ZHANG Shengwen1,LU Yuping2,WU Hongtao2 (1. Mechanical and Power engineering Institute,Jiangsu university of Science and technology,Zhenjiang 212003,china 2. college of automation engineering,nanjing university of aeronautics and astronautics,nanjing 210016,china) Mechanical and Power engineering Institute Jiangsu University of Science and technologyZhenjiang 212003China college of automation engineering Nanjing University of Aeronauticsand AstronauticsNanjing 210016China

Complicated product QFD system design information including design and manufacturing, operation and maintenance as well as relative supply information, all are tightly related to the product life cycle cooperative design and the process of establishing the QFD system. In the early stage of product design, we can only get the fuzzy and unreliable information. With design going, the fuzzy and unreliable information become less and less. The defect of the traditional QFD is not deal with the fuzzy contents very well. Adopt database class encapsulation and fuzzy inference technology, and then discuss the realization of QFD system based on VFP database. The structure of the fuzzy QFD system based on database class's encapsulation is built and the work flow of fuzzy algorithm based on VFP software is presented. In the analysis of fuzzy QFD process, fuzzy inference is adopted. A developed prototype system and an example have verified some presented techniques and the research results are the basis of the future development.

关键词： quality function deployment(QFD) database class encapsulation fuzzy inference

The Kinematics and Control of Relative Attitude Pointing for Spacecraft Formation Flying

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The Kinematics and Control of Relative Attitude Pointing for...

Robust Control for Fuzzy Systems with Multiple Delays and Persistent Bounded Disturbances

2009中国控制与决策会议

作者： YouTao Gao~1,Bo Xu~2,YuPing Lu~(1,2) 1.college of automation engineering,nanjing university of aeronautics and astronautics,nanjing,210016,china 2.college of astronautics,nanjing university of aeronautics and astronautics,nanjing,210016,china

A geometric method which exploits the coupled relationship between relative position and relative attitude pointing is proposed to derive the desired relative attitude pointing Euler *** coupled kinematics and the dynamics equations of the relative attitude pointing are obtained.A sliding mode control based on exponent reaching law is applied to the coupled control *** simulation results show the effectiveness of the coupled control system on the relative attitude pointing and relative position of spacecraft formation flying.

关键词： Spacecraft Formation Flying Coupled Control Attitude pointing Kinematics and Dynamics Sliding Mode Control

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Robust Control for Fuzzy Systems with Multiple Delays and Pe...

Guaranteed Cost Control For Networked Control System With Interval Time-varying Delay

2010 Chinese Control and Decision Conference

作者： Hongfeng Tao~1,Shousong Hu~2 1.School of Communication and Control engineering,Jiangnan university,Wuxi 214122,china 2.college of automation engineering,nanjing university of aeronautics and astronautics,nanjing 210016,china

＜正＞This paper considers the delay-dependent stabilization and robust output feedback control for a class of fuzzy systems with multiple delays and persistent bounded *** defining new Lyapunov functions and introducing some integral inequalities,a new method of controller design is proposed in terms of the linear matrix inequalities,and then the given robust performance is optimized by the iteration *** method can efficiently attenuate the peak of the persistent bounded disturbances and the initial conditions,and will be more appealing in some practical applications.

关键词： Robust control Multiple-delays Fuzzy systems Persistent bounded disturbances Linear matrix inequality(LMI)

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Guaranteed Cost Control For Networked Control System With In...

2009中国控制与决策会议

作者： Gu Zhou~(1,2),Daobo Wang~1,Peng Chen~3,Xiaobo Zhao~2 1.college of automation engineering,nanjing university of aeronautics astronautics,nanjing 210016,china 2.School of Power engineering,nanjing Normal university nanjing,210042,china 3.Institute of Information and Control engineering Technology,nanjing Normal university,nanjing,210042,china

This paper is concerned with the guaranteed cost controller design of Networked control systems(NCSs) with interval varying *** non-ideal Quality of Servise(QoS) are taken into account by an integrated indexτ(t),which related to data dropout,network-induced delay and error sequence.A new analysis method is provided by using the convexity of the matrix function in deriving the results to avoid the conservatism caused by enlargingτ(t) toτ.Suboptimal guaranteed cost state feedback controller and performance index are developed by solving a set of LMIs based on Lyapunov functional method and a cone complementary linearisation(CCL) *** example and simulation results are given finally to illustrate the effectiveness of our methods.

关键词： Guaranteed cost control Interval time-varying delay Convexity of matrix function

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一类非线性不确定系统的鲁棒自适应控制

数据采集与处理 2003年第3期18卷 310-314页

作者：朱永红姜长生李良英景德镇陶瓷学院机电系景德镇333000 南京航空航天大学自动化学院南京210016

针对一类含有未知参数和动态不确定的非线性系统 ,基于 Lyapunov递推设计方法设计了状态反馈控制器 ,并提出了鲁棒自适应控制算法。所设计的控制器不仅可保证闭环系统的全局稳定性 ,而且使得系统对于所有允许的不确定系统状态全局一致... 详细信息

针对一类含有未知参数和动态不确定的非线性系统 ,基于 Lyapunov递推设计方法设计了状态反馈控制器 ,并提出了鲁棒自适应控制算法。所设计的控制器不仅可保证闭环系统的全局稳定性 ,而且使得系统对于所有允许的不确定系统状态全局一致终值有界。仿真结果表明了本文方法所设计的控制器的有效性和可行性。

关键词：鲁棒自适应控制非线性不确定系统数学模型小增益控制方法控制器

武装直升机火控系统仿真转台的控制系统设计研究

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系统仿真学报 2004年第7期16卷 1567-1570页

作者：段海滨王道波尧放哉南京航空航天大学自动化学院南京210016 中国直升机设计研究所第六研究室景德镇333001

针对武装直升机火控系统的特点,设计研制了一种可用于对其仿真实验的三轴电动仿真转台。在介绍该转台主要性能指标的基础上,提出了武装直升机火控系统仿真测试转台的控制系统总体设计方案,对控制系统的软件设计进行了详尽描述,上位机采... 详细信息

针对武装直升机火控系统的特点,设计研制了一种可用于对其仿真实验的三轴电动仿真转台。在介绍该转台主要性能指标的基础上,提出了武装直升机火控系统仿真测试转台的控制系统总体设计方案,对控制系统的软件设计进行了详尽描述,上位机采用了先进的VxD技术,上位机与下位机的通讯采用了双缓冲机制。含实物仿真实验表明,该仿真转台的整个控制系统具有很高的控制精度,功能完善,可维护性好,已完成了多种型号武装直升机火控系统的重大试验任务。

关键词：武装直升机火控系统仿真转台控制系统 VχD

Design of longitudinal predictive re-entry guidance law based on variable universe fuzzy-PI composite control

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控制理论与应用（英文版） 2012年第2期10卷 264-267页

作者： Yin WANG 1 , Yuping LU 2 1.college of automation engineering, nanjing university of aeronautics and astronautics, nanjing Jiangsu 210016, china 2.college of astronautics, nanjing university of aeronautics and astronautics, nanjing Jiangsu 210016, china college of automation engineering Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu China college of astronautics Nanjing University of Aeronautics and Astronautics Nanjing Jiangsu China

This paper studies the longitudinal predictive re-entry guidance law based on the variable universe fuzzy- PI composite control to overcome the inaccuracy of the reference trajectory re-entry guidance for reentry vehicles. The variable universe fuzzy controller is used to obtain a satisfactory dynamic response when the downrange error is large, and the PI controller is utilized to eliminate the steady state error when the downrange error is small. Simulation results show that the proposed guidance law is very robust to the initial errors and can achieve better accuracy, and is also able to handle the effect of the stochastic errors in re-entry processes.

关键词： Re-entry guidance Variable universe Fuzzy control PI control