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Method for maneuvering target video frequency tracking based on inductive factor of posture information

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Journal of Systems Engineering and Electronics 2010年第2期21卷 261-267页

作者： Xun Chen lihua dou Juan Zhang Department of Automatic Control School of Information Science and Technology Beijing Institute of Technology Beijing 100081 P. R. China

A method for maneuvering target tracking based on in- ductive factor of posture information is proposed. A distinguished charactedstic of video frequency tracking is that it can capture the target posture changes from its picture easily, and the posture change means the motive model of the target will change. This information is very important to predict the trace of maneuvering target. Based on this idea, the quantified values of the target pos- ture change are obtained using Hough algorithm, this key values are defined as inductive factor of posture information, and then, the multiple grey trace predict models are established and the degrees of fuzzy subordinate values for every model are calculated with the inductive factor, the maneuvering extent values are determined by a new analysis method of stochastic differential equations for each model used to modify the degree of fuzzy subordinate values, these constitute the weighted values for every grey predict collec- tion. Finally, the synthesis predicting weighted result is obtained. The experimental results show that the new method is superior to the conventional algorithm.

关键词： target posture grey prediction hough algodthm de- gree of fuzzy subordinate.

A joint mid-course and terminal course cooperative guidance law for multi-missile salvo attack

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Chinese Journal of Aeronautics 2018年第6期31卷 1311-1326页

作者： Jie ZENG lihua dou Bin XIN School of Automation Beijing Institute of Technology Beijing 100081 China State Key Laboratory of Intelligent Control and Decision of-Complex Systems Beijing 100081 China

Salvo attacking a surface target by multiple missiles is an effective tactic to enhance the lethality and penetrate the defense system. However, existing cooperative guidance laws in the midcourse or terminal course are not suitable for long-and medium-range missiles or stand-off attacking. Because the initial conditions of cooperative terminal guidance that are generally generated from the mid-course flight may not lead to a successful cooperative terminal guidance without proper mid-course flight adjustment. Meanwhile, cooperative guidance in the mid-course cannot solely guarantee the accuracy of a simultaneous arrival of multiple missiles. Therefore, a joint mid-course and terminal course cooperative guidance law is developed. By building a distinct leader-follower framework, this paper proposes an efficient coordinated Dubins path planning method to synchronize the arrival time of all engaged missiles in the mid-course flight. The planned flight can generate proper initial conditions for cooperative terminal guidance, and also benefit an earliest simultaneous arrival. In the terminal course, an existing cooperative proportional navigation guidance law guides all the engaged missiles to arrive at a target accurately and *** integrated guidance law for an intuitive application is summarized. Simulations demonstrate that the proposed method can generate fast and accurate salvo attack.

关键词： Cooperative systems Dubins path Mid-course flight Missile guidance Salvo attack

One modified method of characteristics used to analyze the multiconductor transmission lines

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Journal of Systems Engineering and Electronics 2006年第1期17卷 65-70页

作者： Fu Jiwei Hou Chaozhen dou lihua Dept. of Automatic Control School of Information Science and Technology Beijing Inst. of Technology Beijing 100081 P.R. China

To solve the coupling effect of multiconductor transmission lines excited by external electromagnetic wave, the modified method of characteristics is proposed. The modified method of characteristics which can compute the terminal induced voltages excited by the external electromagnetic wave when the terminal networks or intereonnection networks contain the dynamic elements is introduced. The simulation results indicate that the modified method can analyze the terminal induced voltages when the terminal networks or the interconnection networks contain the dynamic elements excited by the external electromagnetic wave. And the results are compared with the results acquired by FDTD method, the two results are completely same. So one effective modified method is implemented to compute the transmission lines.

关键词： multiconductor transmission line the method of characteristics dynamic elements.

Predictive control for mechanical system with backlash based on hybrid model

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Journal of Systems Engineering and Electronics 2009年第6期20卷 1301-1308页

作者： dou lihua Dong Lingxun Chen Jie Xia Yuanqing Dept. of Information Science and Technology Beijing Inst. of Technology Beijing 100081 P. R. China

The mechanical system with backlash is distinguished between a＂backlash mode＂and a＂contact mode＂.The inherent switching between the two operating modes makes the system a prime example of hybrid *** eliminating the bad effect of backlash, a piecewise affine（PWA） model of the mechanical servo system with backlash is *** optimal control of constrained PWA system is obtained by taking advantage of model predictive control（MPC） method, and the explicit solution of MPC in a look-up table form is figured out by combining the dynamic programming and multi-parametric quadratic programming, thereby establishing an explicit hybrid model predictive ***, a piecewise quadratic（PWQ） function for guaranteeing the stability of closed-loop control is found by formulating the search of PWQ function as a semi-definite programming *** the tracking experiments, it is demonstrated that the explicit hybrid model predictive controller has a good traction control effect on the mechanical system with *** error meets the demands of real ***, compared to the direct on-line computation, the computation burden is reduced by the explicit solution, thereby being suitable for real-time control of system with short sampling time.

关键词： predictive controller hybrid model hybrid control backlash mode.

Mobility Prediction Based Tracking of Moving Objects in Wireless Sensor Networks

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Chinese Journal of Electronics 2023年第4期32卷 793-805页

作者： TANG Chao XIA Yinqiu dou lihua School of Automation Beijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center

This paper investigates the multi-sensor fused localization of moving targets in a wireless sensor network. Each ultra-wide band(UWB) sensor is assigned a stability weight according to its survival time prediction. The measurement accuracy of each sensor into the constraints of the weight distribution based on the interactive multi-model method, a double weight distribution algorithm that considers measurement accuracy and stability is proposed. Based on the double weight algorithm,the measurement information of each UWB sensor, the inertial measurement unit(IMU)-based state vector and the UWB-based state vector by federated Kalman filter are integrated to realize the correction of the IMU. Finally, several numerical simulations are performed to show that the proposed algorithm can effectively suppress the measurement dropout when tracking moving targets in a wireless sensor network, and it can also automatically adjust the weight of each sensor based on the measurement error covariance to improve the tracking accuracy.

关键词： Weight measurement Wireless communication Wireless sensor networks Measurement errors Target tracking Heuristic algorithms Measurement uncertainty

An overview of recent progress in high-order nonholonomic chained system control and distributed coordination

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Journal of Control and Decision 2015年第1期2卷 64-85页

作者： Jie Huang Jie Chen Hao Fang lihua dou School of Automation Beijing Institute of TechnologyBeijingChina State Key Laboratory of Intelligent Control and Decision of Complex Systems BeijingChina Fujian Institute of Education FuzhouChina

This paper reviews some main results and progress concerning with nonholonomic system control,especially focusing on the networked chained system *** controllability of nonholonomic system,the control method of nonholonomic system,the chained form transformation,the basic graph theory for multi-agent systems are recalled,*** important definitions,lemmas,theorems and dynamics are *** the consensus and formation control problems for networked nonholonomic chained systems are ***,some open questions are proposed.

关键词： distributed coordination multi-agent system nonholonomic system chained system high-order

An Overview of Distributed High-order Multi-agent Coordination

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IEEE/CAA Journal of Automatica Sinica 2014年第1期1卷 1-9页

作者： Jie Huang Hao Fang lihua dou Jie Chen the School of Automation Beijing Institute of Technology Key Laboratory of Intelligent Control and Decision of Complex Systems the Fujian Institute of Education

Research on multi-agent systems has attracted much attention in the past two decades, and numerous results have been obtained. Its widespread applications include spacecraft,mobile robots, sensor networks, etc. Most previous research works on multi-agent systems studied the first- and second-order dynamics. However, in engineering, many systems are modeled by higher-order dynamics. This paper reviews the major results and progress in distributed high-order multi-agent *** the review, a short discussion section is included to summarize the existing research and propose several promising research directions along with some open problems that are deemed important for further investigations.

关键词： Multi-agent systems Protocols Linear systems Nonlinear systems Heuristic algorithms Laplace equations

Hybrid model predictive control for speed control of permanent magnet synchronous motor with saturation

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控制理论与应用（英文版） 2011年第2期9卷 251-255页

作者： Dong, Lingxun dou, lihua Chen, Jie Xia, Yuanqing School of Automation Beijing Institute of Technology Beijing 100081 China

A discrete-time hybrid model of a permanent magnet synchronous motor (PMSM) with saturation in voltage and current is *** controller design with incorporated constraints is achieved in a systematic way from modeling to control synthesis and *** Hybrid System Description Language is used to obtain a mixed-logical dynamical (MLD) *** on the MLD model,a model predictive controller is designed for an optimal speed regulation of the *** reducing computation complexity and computation time,the MPC controller is converted to its equivalent explicit piecewise affine form by multiparametric *** and experiments show that good and robust control performance is achieved by the hybrid model predictive controller as compared with the linear quadratic regulator (LQR) and the PID controller.

关键词： Mixed logical dynamical Hybrid MPC Multiparametric programming Model predictive control

Adaptive cooperative secure control of networked multiple unmanned systems under FDI attacks

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Security and Safety 2023年第4期2卷 102-117页

作者： Yanhui Zhang Di Mei Yong Xu lihua dou The School of Automation and the Key Laboratory of Autonomous Intelligent Unmanned Systems Beijing Institute of TechnologyBeijing 100081China

With the expanding applications of multiple unmanned systems in various fields,more and more research attention has been paid to their *** aim is to enhance the anti-interference ability,ensure their reliability and stability,and better serve human *** article conducts adaptive cooperative secure tracking consensus of networked multiple unmanned systems subjected to false data injection *** a practical perspective,each unmanned system is modeled using high-order unknown nonlinear discrete-time *** reduce the communication bandwidth between agents,a quantizer-based codec mechanism is *** quantizer uses a uniform logarithmic quantizer,combining the advantages of both *** the transmission information attached to the false data can affect the accuracy of the decoder,a new adaptive law is added to the decoder to overcome this difficulty.A distributed controller is devised in the backstepping *** mathematical analysis shows that our proposed control algorithms ensure that all signals of the resultant systems remain ***,simulation examples reveal the practical utility of the theoretical analysis.

关键词： Secure cooperative control networked multiple unmanned systems false data injection attacks encoding-decoding strategy