成果/Result
- Novel Calibration Algorithm for a Three-Axis Strapdown Magnetometer被引量：51收藏
- 作者：Liu, Yan Xia Li, Xi Sheng Zhang, Xiao Juan Feng, Yi Bo
- 机构：Beijing Union Univ;Univ Sci & Technol Beijing
- 来源：SENSORS 2014
- 关键词：constant intersection angle assumption ellipsoid fitting restricted least squares solution rotation matrix
- 三轴磁罗盘标定位置分布的研究被引量：21收藏
- 作者：刘艳霞 李希胜 冯毅博 张晓娟
- 机构：北京科技大学自动化学院;北京联合大学自动化学院
- 来源：《仪器仪表学报》 2013
- 关键词：椭球假设 等面积均匀取点算法 等夹角均匀取点算法 夹角恒定假设 三轴磁罗盘
- 摘要：针对符合椭球假设的误差模型,分析了均匀取点和非均匀取点对椭球拟合精度及误差校准效果的影响,在此基础上提出了等夹角均匀取点算法。仿真结果表明等夹角均匀取点算法优于等面积均匀取点算法,通过等夹角均匀取点,并结合夹角恒定假设条...
- 航向测量系统中三轴磁传感器标定的等效两步法被引量：15收藏
- 作者：石岗 李希胜 李雪峰 刘艳霞 康瑞清 舒雄鹰
- 机构：北京科技大学自动化学院;中国石油大学(华东)信息与控制工程学院;中国石油大学胜利学院;北京市工业波谱成像工程技术研究中心;北京联合大学自动化学院
- 来源：《仪器仪表学报》 2017
- 关键词：航向测量 三轴磁传感器 等效变换 椭球法 主成分分析
- 摘要：针对航向测量系统中三轴磁传感器误差参数标定问题提出了等效两步法。通过奇异值分解将测量模型等效为一组坐标变换,分析误差参数的几何意义及等效变换方法的意义与特点,依据几何意义将标定过程分为两步进行,即等效传感器坐标系标定及等...
- 超限学习机在磁罗盘非线性误差补偿中的应用被引量：7收藏
- 作者：刘艳霞 方建军 张晓娟 孙建
- 机构：北京联合大学自动化学院;北京科技大学检测与控制系
- 来源：《仪器仪表学报》 2015
- 关键词：超限学习机 神经网络 非线性误差模型 磁罗盘
- 摘要：针对磁阻式传感器组成的磁罗盘中不容忽视的非线性误差,建立了隐式非线性误差模型,引入机器学习中的超限学习机算法对非线性误差模型进行训练。利用训练好的误差模型对航向角测量误差进行补偿,误差由补偿前的±3°下降到±0.2°,均...
- The fault diagnosis system with self-repair function for screw oil pump based on support vector machine被引量：3收藏
- 作者：Tian, Jingwen Gao, Meijuan Liu, Yanxia Zhou, Hao Li, Kai
- 机构：Beijing Union Univ;Beijing Univ Chem Technol
- 来源：2007 IEEE INTERNATIONAL CONFERENCE ON ROBOTICS AND BIOMIMETICS, VOLS 1-5 2007
- 关键词：fault diagnosis self-repair function support vector machine screw oil pump
- Research of Terrain Recognition for Off-road Robot Based on Extreme Learning Theory被引量：2收藏
- 作者：Liu, Yanxia Fang, Jianjun Liu, Caixia
- 机构：Beijing Union Univ
- 来源：2016 INTERNATIONAL CONFERENCE ON ADVANCED MECHATRONIC SYSTEMS (ICAMECHS) 2016
- 关键词：Terrain Recognition Extreme learning algorithm Texture feature extraction Robot
- The field terrain recognition based on extreme learning machine using wavelet features被引量：1收藏
- 作者：Liu, Caixia Fang, Jianjun Liu, Yanxia Lu, Yujiao
- 机构：Beijing Union Univ
- 来源：2017 IEEE INTERNATIONAL CONFERENCE ON MECHATRONICS AND AUTOMATION (ICMA) 2017
- 关键词：Legged robots Extreme learning machine Wavelet feature Terrain recognition
- A Research on Expert Fuzzy-PID Fusion Controller Algorithm in VAV Central Air Conditioning System被引量：1收藏
- 作者：Du, Mingfang Zhang, Zhaoli Liu, Yanxia
- 机构：Beijing Union Univ
- 来源：2009 THIRD INTERNATIONAL SYMPOSIUM ON INTELLIGENT INFORMATION TECHNOLOGY APPLICATION, VOL 1, PROCEEDINGS 2009
- 关键词：Air conditioning - Curricula - Fuzzy logic - MATLAB - Three term control systems
- Wireless networked security system based on ZigBee technology被引量：0收藏
- 作者：Liting, Cao Yanxia, Liu Shuo, Yang
- 机构： College of Automation
- 来源：2008 International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2008 2008
- 关键词：Fireproofing - Leaching - Microsensors - Mobile computing - Monitoring - Network security - Security systems - Sensor nodes - Topology - Transmission control protocol - Wireless sensor networks - Zigbee
- Online Violent Behavior Recognition Based on LightwEIght Temporal Shift Convolutional Neural Network被引量：0收藏
- 作者：Zhang, Lujia Le, Haifeng Fang, Jianjun Liu, Yanxia
- 机构： Beijing Union University; College of Urban Rail Transit and Logistics
- 来源：2023 7th International Conference on Electrical, Mechanical and Computer Engineering, ICEMCE 2023 2023
- 关键词：Behavioral research - Convolutional neural networks - Deep learning - Edge computing - Image enhancement - Inference engines - Security systems - Semantics
- Application of ZigBee Communication in mobile monitor被引量：0收藏
- 作者：Liu, Yanxia Li, Shufen Cao, Liting
- 机构：BeiJing Union Univ
- 来源：2009 ASIA-PACIFIC CONFERENCE ON INFORMATION PROCESSING (APCIP 2009), VOL 2, PROCEEDINGS 2009
- 关键词：ZigBee wireless mesh network UC/OS-II RFD FFD
- The Research of Compost Quality Evaluation Modeling Based on High Speed and Precise Genetic Algorithm Neural Network被引量：0收藏
- 作者：Tian, Jingwen Gao, Meijuan Liu, Yanxia Zhang, Fan
- 机构：Beijing Union Univ;Beijing Univ Chem Technol
- 来源：2008 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY, VOLS 1-5 2008
- 关键词：Genetic algorithms Neural networks Sludge compost Quality evaluation Modeling
- Study on Measurement System of Underwater Autonomous Robot被引量：0收藏
- 作者：Yang, Qingmei Sun, Jianmin Liu, Yanxia
- 机构：Beijing Union Univ;Beijing Univ
- 来源：2008 IEEE CONFERENCE ON ROBOTICS, AUTOMATION, AND MECHATRONICS, VOLS 1 AND 2 2008
- 关键词：Kalman filter muti-sensor fusion measure system robot
- Application of dual-RAM in Numerical Control System被引量：0收藏
- 作者：Liu, Yanxia Li, Shufen Cao, Liting
- 机构：Beijing Union Univ
- 来源：2009 IITA INTERNATIONAL CONFERENCE ON SERVICES SCIENCE, MANAGEMENT AND ENGINEERING, PROCEEDINGS 2009
- 关键词：CNC dual-RAM G code PCI bus ISA bus S3C44B0
- Application of WiFi Communication in mobile monitor被引量：0收藏
- 作者：Liu, Yanxia Cao, Liting Song, Yuqiu
- 机构：Beijing Union Univ
- 来源：IEEC 2009: FIRST INTERNATIONAL SYMPOSIUM ON INFORMATION ENGINEERING AND ELECTRONIC COMMERCE, PROCEEDINGS 2009
- 关键词：WiFi Mobile monitor Treatment accident
