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IEEE International Conference on Automation and Logistics

作者： Zhigang Liu Junzheng Wang Jiangbo Zhao Key Laboratory of Complex System Intelligent Control and Decision School of Automation Beijing Institute of Technology Beijing China

Friction and load disturbance are important factors in high resolution control for 3-axis turntable servo system. LuGre dynamic friction model is adopted to describe the mathematic model of the pitch axis servo system with friction. Due to the dynamic LuGre model is built on three unknown parameters. Besides, system torque and inertia are also uncertain due to the motor torque ripple or disturbance. A dual sliding mode observer is adopted to estimate these parameters, and Lyapunov function is used to design the update laws. Based on these estimated parameters, adaptive control law is designed to compensate the unknown friction and load disturbance. Simulation suggest that the proposed method is global asymptotically convergent, which guarantee the position and speed signals track the desired trajectories asymptotically.

关键词： Friction Servomechanisms Mathematical model Torque Parameter estimation control systems Mathematics Servomotors Lyapunov method Adaptive control

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Dynamically Optimized Sensor Deployment Based on Game Theory

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Journal of systems Science and complexity 2018年第1期31卷 276-286页

作者： Zhang Fan Zheng Zhi Jiao Lei School of Automation Beijing Institute of Technology Beijing 100081 Decision of Complex Systems State Key Laboratory of Intelligent Control Beijing 100081

Sensor network deployment is the key for sensors to play an important performance. Based on game theory, first, the authors propose a multi-type sensor target allocation method for the autonomous deployment of sensors, considering exploration cost, target detection value, exploration ability and other factors. Then, aiming at the unfavorable environment, e.g., obstacles and enemy interference, the authors design a method to maintain the connectivity of sensor network, under the conditions of effective detection of the targets. Simulation result shows that the proposed deployment strategy can achieve the dynamic optimization deployment under complex conditions.

关键词： Connectivity dynamic deployment game theory target allocation

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Cross-Membrane Penetration to Nucleus of Adherent Cells Using Micropipettes Made by Borosilicate Glass and Quartz

Cross-Membrane Penetration to Nucleus of Adherent Cells Usin...

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IEEE International Conference on Mechatronics and Automation

作者： Xinyue Xu Xiaoming Liu Yuqing Lin Pengyun Li Fengyu Liu Xiaoqing Tang Qiang Huang Tatsuo Arai Key Laboratory of Biomimetic Robots and Systems Ministry of Education State Key Laboratory of Intelligent Control and Decision of Complex System Beijing Institute of Technology Beijing China

ISBN: (数字)9781728164168

ISBN: (纸本)9781728164175

In the biomicromanipulation field, single-cell manipulation is receiving attention due to its potential applications in many aspects of biomedicine. Cell injection, as a typical cell micromanipulation technique, is devoted to introducing foreign substances into living cells by penetrating a fine micropipette into cell membranes. Direct access to the intracellular environment, especially the nucleus, provides an ideal way to gain insight into the dynamic processes of living cells. This paper presents the comparison of controlled penetrations of two types of adherent cells and their nuclei by two types of micropipettes, made of borosilicate glass and quartz respectively. Due to the differences in the cell properties (e.g., height, adhesion strength), two corresponding penetration strategies optimizing the puncture angle and puncture height, are proposed to improve the success rate of the puncture process and the survival rate of cells after the puncture. Real nucleus puncture experiments adopting the optimal puncture strategy for each type of cells and carried out by a semi-automatic system, indicated a better puncture effect by quartz pipettes. Through this method, functional materials such as peptides and nanoparticles can be potentially introduced to perturb the cell activities and then realize its full automation.

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Information stream based effectiveness evaluation of air defense networked fire control system

Information stream based effectiveness evaluation of air def...

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作者： Dong, Shike Zhang, Juan Chen, Chen School of Automation Beijing Institute of Technology Beijing 100081 China Key Laboratory of Complex System Intelligent Control and Decision Ministry of Education Beijing 100081 China Department of Automation Tsinghua University Beijing 100084 China

ISBN: (纸本)9789881725592

An efficient evaluation index system and evaluation model is crucial for effectiveness evaluation of the air defense networked fire control system. This paper, based on pre-research for functions and characteristics of the system, put forth a comprehensive evaluation index system which includes four layers of index hierarchy. Aiming at the characters of some indexes, several evaluation methods are adopted for giving their corresponding evaluation results. Under the condition of networking, the key effect of information stream for exerting system effectiveness is highlighted in this paper. Fuzzy comprehensive evaluation method is employed to establish effectiveness evaluation model for the system. Moreover, to identify the validity of the proposed methods and model, a case study is discussed. The evaluation case shows that the model of effectiveness evaluation is feasible, and capable to carry out objective and reasonable effectiveness evaluation for the system. © 2011 Chinese Assoc of Automati.

关键词： Fire control systems

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Gait Planning and Motion control Based on Vrep Simulation for Quadruped Robot 5

Gait Planning and Motion Control Based on Vrep Simulation fo...

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5th World Robot Conference Symposium on Advanced Robotics and Automation, WRC SARA 2023

作者： Zhou, Linqi Chen, Zhihua Liu, Jun Liu, Zhi Chen, Yumeng Zhang, Liting Nanchang Hangkong University Key Laboratory of Jiangxi Province for Image Processing and Pattern Recognition Moe Key Lab of Nondestructive Testing Technology Nanchang330063 China Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems School of Automation Beijing100081 China

ISBN: (纸本)9798350307320

Gait planning of quadruped robots plays an important role in achieving less walking, including dynamic and static gait. In this article, a static and dynamic gait control method based on center of gravity stability margin is proposed. Firstly, the robot model and kinematics modeling are introduced. Secondly, the robot's foot static and dynamic gait were planned and the foot trajectory was designed. Finally, two types of gait of the robot were simulated using Vrep simulation software, and the differences in stability and speed between the coordinated gait with speed and stability in the static and dynamic gait of a 12 degree of freedom robot were analyzed, verifying the effectiveness of the gait control method proposed in this paper. © 2023 IEEE.

关键词： Robot programming

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Differential Evolution Based Receding Horizon controlfor UAV Motion Planning in Dynamic Environments

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机器人 2013年第1期 107-114页

作者： ZHANG Xing BAI YongQiang XIN Bin CHEN Jie School of Automation Beijing Institute of Technology Key Laboratory of Complex System Intelligent Control and Decision Ministry of Education Decision and Cognitive Sciences Research Centre Manchester Business SchoolUniversity of Manchester

This paper presents online motion planning for UAV(unmanned aerial vehicle) in complex threat field,including both static threats and moving threats,which can be formulated as a dynamic constrained optimal control *** horizon control(RHC) based on differential evolution(DE) algorithm is adopted.A location-predicting model of moving threats is established to assess the value of threat that UAV faces in *** flyable paths can be generated by the control inputs which are optimized by DE under the guidance of the objective *** results demonstrate that the proposed method not only generates smooth and flyable paths,but also enables UAV to avoid threats efficiently and arrive at destination safely.

关键词： unmanned aerial vehicle motion planning receding horizon control differential evolution

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decision-making and Planning Framework with Prediction-Guided Strategy Tree Search Algorithm for Uncontrolled Intersections 25

Decision-making and Planning Framework with Prediction-Guide...

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25th IEEE International Conference on intelligent Transportation systems, ITSC 2022

作者： Zhang, Ting Fu, Mengyin Song, Wenjie Yang, Yi Wang, Meiling Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing 100081 China Nanjing University of Science and Technology Nanjing 210014 China

ISBN: (数字)9781665468800

ISBN: (纸本)9781665468817

Uncontrolled intersections are important and challenging traffic scenarios for autonomous vehicles. Vehicles not only need to avoid collisions with dynamic vehicles instantaneously but also predict their behavior then make long-term decisions in reaction. To solve this problem, we propose a cooperative framework composed of a Primary Driver (PD) for motion planning and a Subordinate Driver (SD) for decision-making. SD is essentially the combination of a prediction module and a high-level behavior planner, which develops a prediction-guided strategy tree to determine the optimal action sequence. Especially, under the guidance of the prediction results, the tree branches are evaluated in security metrics, then get trimmed in action and observation space to reduce the dimensional complexity. With the assistance of SD, PD works as a collision checker and a low-level motion planner to generate a safe and smooth trajectory. We use the INTERACTION dataset to validate our method and achieve more than 90% success rate with efficiency improvement in various situations. © 2022 IEEE.

关键词： Uncertainty decision making Prediction algorithms Planning Trajectory complexity theory Behavioral sciences

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decision-Making and Path Planning for Highway Autonomous Driving Based on Spatio-Temporal Lane-Change Gaps

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IEEE systems Journal 2022年第2期16卷 3249-3259页

作者： Feng, Zhiqi Song, Wenjie Fu, Mengyin Yang, Yi Wang, Meiling Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems School of Automation Beijing100081 China

Safe and efficient decision-making and path planning is a challenging problem for autonomous driving in highway because of numerous dynamic vehicles around the ego-vehicle. For ego-vehicle driving on structured roads, behavioral decisions tend to pay more attention to the relative distribution of its surrounding vehicles, while path planning based on the decision requires more detailed consideration of vehicle model and lane curvature. Therefore, these two modules are separated in our article and executed successively in different coordinate systems. Specifically, we create a decision topology for lane changing or following decision based on spatio-temporal lane-change gaps in relative moving coordinate, which consists of the node representing the gap and the edges representing the connectivity between two gaps. Combining the decision topology with the behaviors of surrounding dynamic vehicles, a local cost map is generated and the target decision gap is selected. Once the decision is done, a smooth and safe trajectory from the ego-vehicle to the target decision gap, that satisfies the constraints of acceleration and curvature, is obtained in the geodetic coordinate through polynomial trajectory generation. The real-time performance and effectiveness of this method were verified in the dynamic high-speed interaction scenarios. © 2007-2012 IEEE.

关键词： decision making

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Color moving object detection method based on automatic color clustering

Color moving object detection method based on automatic colo...

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Chinese control Conference (CCC)

作者： Jing Li Junzheng Wang Jiali Mao Key Laboratory of Complex System Intelligent Control and Decision School of Automation Beijing Institute of Technology Beijing Beijing CN

Moving object detection is usually used in gray image, and the color image should be converted to gray images to achieve detection. However, the color object can't be described by simple gray information completely. In order to achieve automatic color moving object detection, the method based on automatic color clustering is especially proposed. Because the difference between adjacent pixels in an image is very small, the initial cluster center can be moved in the maximum distance. The proposed method can reduce the number of iterations and quicken convergence speed, meanwhile determine the number of color cluster and the location of the color object automatically. The proposed algorithm is validated in the actual system, experimental results show that the proposed method can automatically achieve color clustering for color image, while detect color objects.

关键词： Image color analysis Clustering algorithms Image segmentation Color Classification algorithms Object segmentation Object detection

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Cooperative Pollution Supervising and Neutralization with Multi-actuator-sensor Network

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自动化学报 2011年第1期37卷 107-112页

作者： SUN Wei School of Automation Beijing Institute of Technology Beijing 100081 P. R. China Key Laboratory of Complex System Intelligent Control and Decision (Beijing Institute of Technology) Ministry of Education Beijing 100081 P.R. China

现在的工作认为一个 multi-actuator-sensor 网络抵销的一种情形是污染在一个围住的区域采购的有毒的气体和磁道。当在致动器的工作量上到达平衡时，一个新奇算法被建议最小化系统信息无常。方法把 centroidal Voronoi 镶嵌细工(CVT ) ... 详细信息

现在的工作认为一个 multi-actuator-sensor 网络抵销的一种情形是污染在一个围住的区域采购的有毒的气体和磁道。当在致动器的工作量上到达平衡时，一个新奇算法被建议最小化系统信息无常。方法把 centroidal Voronoi 镶嵌细工(CVT ) 与一致策略相结合。这个区域的 CVT 保险致动器的一种本地最佳的位置配置，因此，察觉到的无常能被最小化。一致算法在致动器之中利用连接信息，并且帮助他们到达普通工作量。当工作量被平均时，一致部件将被终止或压制。一致部件可以推迟 CVT 配置的实现。但是它能被看作帮助致动器从本地最佳的 CVT 配置跳的不安。作为结果，信息无常可以进一步被减少。比较与一致策略在纯 CVT 算法和方法之间被拉。模拟验证了建议途径。

关键词：传感器 CVT 运算法则仿真

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