检索结果-内蒙古大学图书馆

5th International Workshop on advanced Computational Intelligence and intelligent Informatics, IWACIII 2017

作者： Li, Dan-Yun Liu, Cong-Jun Liu, Zhen-Tao Feng, Zhi-Yong School of Automation China University of Geosciences Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China Hubei Key Laboratory of Advanced Technology of Automotive Parts Wuhan University of Technology Wuhan430070 China

TinySLAM algorithm is a simple 2D laser SLAM algorithm. However, in practical applications, it has higher error rate of mapping because of its simple filter. In this paper, an improved TinySLAM algorithm is proposed for simultaneous location and mapping. By adding a simple filter before the Monte Carlo simulation and then fusing the information from the odometer, the error in the positioning process can be reduced. Moreover, the introduced hybrid map cell model that can be compatible with ROS system, improves the response to dynamic obstacles, and reduces the mapping error rate further. Simulation using ROS system and Stage software is performed, from which the results show that the proposal has good effects comparing with TinySLAM, and the error rate is reduced so that the map built is closer to the actual environment.

关键词： Mapping

来源：评论

学校读者我要写书评

暂无评论

Oil Pipeline Leak Detection Based on Image Recognition

Oil Pipeline Leak Detection Based on Image Recognition

引用

International Conference on Instrumentation, Measurement, Computer, Communication and control (IMCCC)

作者： Xingshu Gu Chuang Wang Northeast Petroleum University Institute of Complex System and Advanced Control Daqing China Northeast Petroleum University Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Daqing China

ISBN: (数字)9781538682463

ISBN: (纸本)9781538682470

This paper studies the design of leak detection design for oil pipeline based on image recognition technology. The basic steps of the process are as follows: Firstly, by using the image processing function of MATLAB software, the oil pipeline images collected are processed, such as preprocessing, image recognition and segmentation, image morphological processing and so on. Finally, the leakage of oil pipeline is judged according to the test results. In the preprocessing part, gray processing is mainly performed, which can speed up the processing and improve the accuracy of recognition. The image segmentation section is selected using threshold segmentation. In the image morphology processing part, the edge contour obtained by the image segmentation part can be more clearly defined by the etching and expansion operation. The final output of the design is divided into three parts, one in which there is no leakage. In the other two cases, when a leak is detected, the degree of leakage is divided into a slight leak and a serious leak, which helps the tester to understand the leak more clearly and improve the practicability of the design.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Multi Constellation Fast Selection Method Based on Equivalent Distance Error

Multi Constellation Fast Selection Method Based on Equivalen...

引用

第37届中国控制会议

作者： Guangjun Wang Yutao Cheng Shaohui Yang School of Automatic China University of Geosciences Hubei Key Laboratory of Advance Control and Intelligent Automation for Complex Systems STATE GRID PUYANG ELECTRIC POWER SUPPLY COMPANY

A single satellite navigation system can get high accuracy in general environment, but when the ground satellite navigation receiver is in complex environment, single system navigation often results in poor location results due to the visible satellite less than four. If multiple constellation fusion navigation is used, the number of visible satellites can be increased, thus improving the positioning results. However, the use of all visible satellites in location calculation will bring a huge amount of calculation, which seriously affects the real-time performance of navigation and positioning. Therefore, a reasonable selection of star selection method is urgently needed in the integrated navigation system. Based on the two performance indexes of balanced geometric accuracy factor（GDOP） and star selection efficiency, fast star selection algorithm based on equivalent distance error is proposed in this paper. The experimental results show that the method can effectively improve the efficiency of multi constellation star selection of the premise of high precision.

关键词： Satellite navigation Multi-constellation fusion Satellite selection Geometric Dilution of Precision

来源：评论

学校读者我要写书评

暂无评论

Stability and Neimark-Sacker bifurcation analysis for single gene discrete system with delay

Stability and Neimark-Sacker bifurcation analysis for single...

引用

Chinese control Conference

作者： Feng Liu Qicheng Mei Fenglan Sun Xinmei Wang Hua O. Wang Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China School of Automation China University of Geosciences Wuhan China Research Center of System Theory and Application Chongqing University of Posts and Telecommunications Chongqing China Department of Mechanical Engineering Boston University Boston MA USA

The network structure and functional properties of gene regulatory system and their relationships arc an important research field in systems biology. In this paper, a new improved model is proposed based on the study of gene expression process. The model takes into account the effect of protein concentration on the gene expression, so as to obtain a new bifurcation point and improve the performance of the system. The validity of the model is verified by theoretical analysis and data simulation.

关键词： Mathematical model Proteins Stability analysis Bifurcation Biological system modeling Delays RNA

来源：评论

学校读者我要写书评

暂无评论

An approach of joint-space trajectory generation 5

An approach of joint-space trajectory generation

引用

5th International Workshop on advanced Computational Intelligence and intelligent Informatics, IWACIII 2017

作者： Chen, Xin Jiang, Chen-Xu Zhou, Li School of Automation China University of Geosciences Wuhan430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex System Wuhanz430074 China School of Arts and Communication China University of Geosciences Wuhan430074 China

Trajectory generation is a prerequisite for robot control system and is divided into two regions, Cartesian space and joint space. This paper presents an approach to generate the trajectory in joint-space. This method uses normalization and transformation of the sine function to generate the desired trajectory, which is more smooth and continuous than the parabolic method in multiple time derivatives of the joint parameter. Compared with the third order polynomial method, this approach can depress the unacceptable infinite spikes in the jerk, which is the derivative of acceleration. Besides, the using of normalization in this approach is to make it more convenient and efficient be applied.

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

Deep Forest-Based Classification of Hyperspectral Images

Deep Forest-Based Classification of Hyperspectral Images

引用

Chinese control Conference

作者： Xu Yin Ruilin Wang Xiaobo Liu Yaoming Cai Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan P. R. China School of Computer Science China University of Geosciences Wuhan P. R. China

The classification of hyperspectral images (HSIs) is a hot topic in the field of remote sensing technology. In recent years, convolutional neural network (CNN) has achieved great success for HSI classification. However, CNN has to do a great effort in parameters tuning which is time-consuming. Furthermore, a large number of samples are required to train CNN, nevertheless, it is expensive to obtain enough training samples from HSIs. In this paper, we propose a novel classification approach based on deep forest. To reduce the dimension of hyperspectral data, principal component analysis (PCA) is performed during the pre-processing. In contrast to the CNN, our method has fewer hyper-parameters and faster training speed. To the best of our knowledge, this is among the first deep forest-based hyperspectral spectral information classification. Extensive experiments are conducted on two real-world HSI datasets to show the proposed method is significantly superior to the state-of-the-art methods.

关键词： Forestry Hyperspectral imaging Training Principal component analysis Vegetation Radio frequency

来源：评论

学校读者我要写书评

暂无评论

Robust Disturbance Rejection in Repetitive-control system Based on Improved Equivalent-Input-Disturbance Approach 36

Robust Disturbance Rejection in Repetitive-Control System Ba...

引用

第36届中国控制会议

作者： Lan Zhou Jinhua She Changzhong Pan School of Information and Electrical Engineering Hunan University of Science and Technology School of Engineering Tokyo University of Technology School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems

ISBN: (纸本)9781538629185

This paper concerns disturbance rejection for a repetitive-control system（RCS） with unknown time-varying uncertainties and nonlinearity. The design of the RCS is based on the concept of equivalent input disturbance（EID）. First, an EID estimator is constructed through a state observer with dynamic coefficient matrix that effectively estimates the total effect of the uncertainties and nonlinearity on the output of the plant. Next, a robust globally uniformly ultimately bounded stability condition for the EID-based RCS is derived in the form of a linear matrix inequality. Then, the methods of designing a modified repetitive controller, a state-feedback controller, and an EID estimator are explained. Finally, simulation results demonstrate the validity of the method.

关键词： Repetitive control Equivalent Input Disturbance Disturbance Rejecting Two-dimensional system Linear Matrix Inequality

来源：评论

学校读者我要写书评

暂无评论

Simulation and Experimental Study on Piezoelectric Geophone Core Based on PMN-PT

Simulation and Experimental Study on Piezoelectric Geophone ...

引用

Chinese control Conference

作者： JunLei Song YanXia Huang ZhiHeng Yang MeiJuan Chen Yong Yang WenQin Mo KaiFeng Dong Fang Jin Hubei key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan P. R. China School of Mathmatics and Physics China University of Geosciences Wuhan P. R. China

Piezoelectric geophones are vibration detectors that convert vibration acceleration signals into electrical signals. High performance piezoelectric materials can improve the sensitivity of piezoelectric geophone and meet the need of high-resolution seismic data acquisition. The comprehensive performance of relaxor piezoelectric single crystal PMN-PT is more superior than PZT, and it is potential to be applied to high sensitivity and small volume geophones. In this paper, the central compressed geophone core model based on PMN-PT was established and theoretically analyzed. Then, a multiphysics simulation model was set up in COMSOL for simulation calculation. Finally, experimental verification was carried out. The results show that using PMN-PT in geophone core design can improve the sensitivity of the model by more than 120% compared with the traditional PZT material. The PMN-PT has the potential to be applied to high sensitivity and small volume geophones.

关键词： Vibrations Sensitivity Acceleration Piezoelectric materials Sensors Earth Force

来源：评论

学校读者我要写书评

暂无评论

Approach and landing guidance design for reusable launch vehicle using multiple sliding surfaces technique

引用

Chinese Journal of Aeronautics 2017年第4期30卷 1582-1591页

作者： Xiangdong LIU Fengdi ZHANG Zhen LI Yao ZHAO School of Automation Beijing Institute of Technology Beijing 100081 China National Key Laboratory of Complex System Intelligent Control and Decision Beijing Institute of Technology Beijing100081 China China Academy of Launch Vehicle Technology Beijing 100076 China

An autonomous approach and landing（A＆L） guidance law is presented in this paper for landing an unpowered reusable launch vehicle（RLV） at the designated runway touchdown. Considering the full nonlinear point-mass dynamics, a guidance scheme is developed in threedimensional space. In order to guarantee a successful A＆L movement, the multiple sliding surfaces guidance（MSSG） technique is applied to derive the closed-loop guidance law, which stems from higher order sliding mode control theory and has advantage in the finite time reaching *** global stability of the proposed guidance approach is proved by the Lyapunov-based *** designed guidance law can generate new trajectories on-line without any specific requirement on off-line analysis except for the information on the boundary conditions of the A＆L phase and instantaneous states of the RLV. Therefore, the designed guidance law is flexible enough to target different touchdown points on the runway and is capable of dealing with large initial condition errors resulted from the previous flight phase. Finally, simulation results show the effectiveness of the proposed guidance law in different scenarios.

关键词： Finite time control Landing guidance Lyapunov stability Reusable launch vehicle Sliding mode control

来源：评论

学校读者我要写书评

暂无评论

A probabilistic learning algorithm for the shortest path problem 11th

A probabilistic learning algorithm for the shortest path pro...

引用

11th International Conference on Simulated Evolution and Learning, SEAL 2017

作者： Diao, Yiya Li, Changhe Ma, Yebin Wang, Junchen Zhou, Xingang School of Automation Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems China University of Geosciences Wuhan China Communication Security Group of Eastern Theater Command Nanjing China

ISBN: (纸本)9783319687582

Ant colony optimization (ACO) has been shown effectiveness for solving combinatorial optimization problems. Inspired by the basic principles of ACO, this paper proposes a novel evolutionary algorithm, called probabilistic learning (PL). In the algorithm, a probability matrix is created based on weighted information of the population and a novel random search operator is proposed to adapt the PL to dynamic environments. The algorithm is tested on the shortest path problem (SPP) in both static and dynamic environments. Experimental results on a set of carefully designed 3D-problems show that the PL algorithm is effective for solve SPPs and outperforms several popular ACO variants. © Springer International Publishing AG 2017.

关键词： Ant colony optimization

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：