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A Compact Ultra-Wideband Microstrip Antenna for Spectrum Monitoring

Progress in Electromagnetics research C 2025年 153卷 225-232页

作者： Liu, Yu Yu, Shuo Liu, Xiaoming The School of Physics and Electronic Information Anhui Normal University Wuhu241002 China Anhui Provincial Engineering Center on Information Fusion and Control of Intelligent Robot Wuhu241002 China

A compact ultra-wideband antenna fed by coplanar waveguide is reported in this paper. The designed antenna consists of a trumpet-shaped planar radiation patch and a symmetrical ground patch. Two Mickey-Mouse shaped perturbative slots and two quarterelliptical grooves are etched on the ground to obtain better impedance matching. By prolonging the radiation patch, a very wide −10 dB bandwidth of covering 300 MHz–18 GHz with bandwidth ratio up to 60: 1 and omnidirectional coverage are achieved. Furthermore, the proposed antenna is able to cover P(0.3-1G), L(1-2G), S(2-4G), C(4-8G), X(8-12G), and Ku (12-18G) bands, which is much preferred for wideband spectrum monitoring. © 2025, Electromagnetics Academy. All rights reserved.

关键词： Ultra-wideband (UWB)

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DESIGN AND IMPLEMENTATION OF A DEEP LEARNING-BASED QUALITY DETECTION SYSTEM FOR CORK DISCS 10

DESIGN AND IMPLEMENTATION OF A DEEP LEARNING-BASED QUALITY D...

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10th International Symposium on Test Automation and Instrumentation, ISTAI 2024

作者： Qu, Liguo Chen, Guohao Liu, Ke Liu, Yuling Wu, Jie Zhou, Hong School of Physics and Electronic Information Anhui Normal University Wuhu China Anhui Intelligent Robot Information Fusion and Control Engineering Research Center Wuhu China

ISBN: (纸本)9781837242672

High-quality badminton shuttlecock heads are made from cork discs derived from natural oak bark, which exhibit complex cracks and wrinkles, causing inefficiency and inconsistency in quality screening. To address this, we propose a deep learning-based detection algorithm using YOLOv5. The YOLOv5 model was optimized for cork disc characteristics by introducing an attention mechanism to enhance feature representation and designing a post-processing algorithm to improve detection accuracy. The optimized model, trained on a custom cork disc dataset using an NVIDIA RTX3080 GPU, achieved 86.7% mFl and 81.5% mAP, outperforming other mainstream algorithms. Finally, the system utilizes Nvidia's edge computing device Jetson Nano as the computational core, deploying the YOLOv5 model and designing the graphical interface on Ubuntu 18.04. Real-time cork disc image acquisition is achieved using binocular industrial cameras and fiber optic sensors, while a uniformly rotating turntable and diversion device are designed to facilitate the transfer of cork disc. Experimental results show that the system achieves a 92.75% classification accuracy for four quality grades with an inference time of 87.6ms, meeting the requirements for real-time cork disc quality inspection. © The Institution of engineering & Technology 2024.

关键词： Image acquisition

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Policy iteration-based adaptive optimal control for Markov jump systems: a transition-probability-free asynchronous approach

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Science China(information Sciences) 2024年第11期67卷 363-364页

作者： Weidi CHENG Chengcheng REN Shuping HE Changyin SUN Key Laboratory of Intelligent Computing and Signal Processing (Ministry of Education) School of Electrical Engineering and Automation Anhui University Anhui Engineering Laboratory of Human-Robot Integration System and Intelligent Equipment School of Electrical Engineering and Automation Anhui University Information Materials and Intelligent Sensing Laboratory of Anhui Province Engineering Research Center of Autonomous Unmanned System Technology (Ministry of Education) School of Artificial Intelligence Anhui University

The controller and filter design problems of Markov jump systems(MJSs) have gained significant attention over the past few decades. These studies include various aspects,including stochastic stabilization [1], optimal tracking control [2], and dissipative filter design [3]. Although numerous publications address the optimal controller design for MJSs, the issue of hidden MJSs, particularly those with mismatched jumping modes between the system and the controller, has rarely been explored.

关键词： Markov processes

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control for singular time-delay systems based on PD feedback of partial states

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International Journal of Dynamics and control 2025年第2期13卷 1-7页

作者： Hu, Jian Lv, Qingwen Zhang, Runzhang Chen, Wenbin Gao, Fang School of Physics and Electronic Information Anhui Normal University Wuhu China Anhui Engineering Research Center on Information Fusion and Control of Intelligent Robot Wuhu China Anhui Provincial Joint Key Laboratory on Information Fusion of Intelligent Automotive Cabin Wuhu China

The $$H_{\infty }$$ control of singular time-delay systems (STDs) with proportional-differential (PD) feedback of partial states is the main topic of this work. A new PD feedback controller with partial states is constructed, and the admissibility and $$H_{\infty }$$ control problems are studied by figuring out the differential-algebraic equations of a class of STDs with external disturbances. Additionally, robust admissibility and robust admissibilization conditions are derived, allowing for the reduction of conservatism and the improvement of control impact with reduced computation. The utilization of a more concise controller in this study facilitates further reduction of decision variables compared to previous studies, while effectively striking a balance between conservatism, the quantity of decision variables, and control efficacy. Lastly, a few numerical examples illustrate the aforementioned claims.

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control for linear time-delay systems based on proportional–integral observer utilizing static output-feedback

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International Journal of Dynamics and control 2025年第2期13卷 1-8页

作者： Yuan, Xuyang Shi, Zuguang Gao, Fang School of Physics and Electronic Information Anhui Normal University Wuhu China Anhui Engineering Research Center on Information Fusion and Control of Intelligent Robot Wuhu China Anhui Provincial Joint Key Laboratory on Information Fusion of Intelligent Automotive Cabin Wuhu China

In this study, the $$H_\infty $$ control problem of a linear time-delay system is considered. A proportional–integral observer and equivalent-input-disturbance method (the PIO-based-EID method) provides a more accurate estimation of the system state and allows for a more flexible system design for enhanced stability. Therefore, in this study, the method is used to improve the disturbance suppression performance of the system. Firstly, an EID estimate is obtained based on the PIO-based-EID method. Subsequently, a static output-feedback control law including EID estimation is developed to ensure excellent control effect. Thirdly, the stability of the closed-loop system is demonstrated by the results of linear-matrix-inequalities to match the $$H_\infty $$ control performance specification. The control law gain and observer gain are then determined using the singular value decomposition method. Ultimately, simulation results from MATLAB software are analyzed to confirm the method’s feasibility.

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Design and implementation of UAV obstacle avoidance based on STM32 3

Design and implementation of UAV obstacle avoidance based on...

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3rd International Conference on Mechatronics and Mechanical engineering, ICMME 2024

作者： Hu, Xusheng Liu, Juan Ma'anshan Engineering Technology Research Center for Wireless Sensor Network and IntelliSense Ma’anshan243031 China Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot Wuhu241002 China Ma'anshan Technical College Ma'anshan243030 China

ISBN: (纸本)9781510681651

With the development of remote control and telemetry technology, the application of UAV is more and more extensive, and the requirement of UAV flight control is higher and higher. In order to enhance the stability of UAV hardware system, the power supply part is protected in various ways;a spare chip is added to ensure the effectiveness of attitude calculation;SPI peripheral interface is reserved to expand GPS, ultrasonic and other sensors. Through the mathematical model, the calibration method of accelerometer and gyroscope is introduced, and the importance of this step for flight control system is emphasized. The software flow chart of the system is designed, and the mathematical model of obstacle avoidance algorithm is given. The classic PID control algorithm and simulation method are used to realize the obstacle avoidance of UAV. Considering the problems that may be encountered in UAV obstacle avoidance, the mathematical model is established, the evaluation index is given, and the control experiment is designed. Experimental results show that the algorithm has good obstacle avoidance effect and strong robustness in low speed and complex environment. © 2024 SPIE.

关键词： Three term control systems

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Efficient Fine-Grained Pedestrian Detection on Edge Devices

Efficient Fine-Grained Pedestrian Detection on Edge Devices

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2023 IEEE International Conference on Unmanned Systems, ICUS 2023

作者： Qian, Haozheng Fang, Mingxing Huang, Song Liu, Xinke Rui, Xinyu Du, Youwu School of Physics and Electronic Information Anhui Normal University Wuhu China Anhui Normal University Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot Wuhu China School of Electrical and Information Engineering Jiangsu University of Technology Changzhou China

ISBN: (纸本)9798350316308

Currently, the prevailing approach in pedestrian detection involves leveraging deep learning techniques. However, effectively detecting pedestrian objects at small scales continues to pose a significant challenge in this field of research. Moreover, many algorithms prioritize accuracy improvement, making it difficult to deploy them in real-world scenarios. This paper proposes an edge device-friendly object detection method. We introduce a target extraction module with a minimal number of non-linear units to preserve fine-grained information in the network. Additionally, we design a trapezoidal FPN structure based on the structural re-parameterization technique, and optimize it specifically for edge devices. Furthermore, we construct a hardware platform to validate the feasibility of our algorithm in real-world applications. In the experimental section, we demonstrate that our proposed method outperforms comparative algorithms on the Caltech pedestrian dataset, while maintaining high speed on edge devices. © 2023 IEEE.

关键词： Feature extraction

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A Simple Fifth Order Digital Differential Analyzer for Circle Generation 5

A Simple Fifth Order Digital Differential Analyzer for Circl...

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2023 5th International Conference on Modeling, Simulation, Optimization and Algorithm, ICMSOA 2023

作者： Chen, Peng Hu, Jinyi Qu, Liguo Wang, Yang Zhao, Lijun College of Physics and Electronic Information Anhui Normal University Anhui Wuhu241000 China Yangtze Delta Region Hart Robotic Technology Research Institute Anhui Wuhu241000 China Anhui Provincial Engineering Laboratory on Information Fusion and Control for Intelligent Robot Anhui Wuhu241000 China Beijing Jingwei Information Technologies Co. Ltd. Beijing100081 China

Digital differential analyzer(DDA) can be used to generate circles and can be treated as a one-step or two-step numerical scheme. DDA algorithms have been classified by the order of some polynomials. We present and discuss a novel fifth-order DDA circle generating algorithms based on the one-step numerical scheme. Numerical experiments show that they are more accurate than the third-order one-step DDA algorithm. © Published under licence by IOP Publishing Ltd.

关键词： Approximation algorithms

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A Compact Antenna Array With Integrated Feeding Structure for intelligent Vehicular Transportation Systems Application

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IEEE Internet of Things Journal 2025年

作者： Gan, Lu Mao, Bohua Liu, Xiaoming Yu, Shuo Jing, Xiaojun Cui, Yuanhao Anhui Normal University School of Physics and Electronic Information China Anhui Engineering Research Center on Information Fusion and Control of Intelligent Robot Anhui Wuhu241002 China Beijing University of Posts and Telecommunications School of Information and Communication China

A compact antenna array is developed for W-band vehicle mounted millimeter-wave radar, also suitable for internet of things (IoT) and intelligent vehicular transportation systems (IVTS). The proposed array provides a flat shoulder shaped radiation pattern, obtained using a beamforming algorithm, enabling medium-and long-range radar detection and information transmission between wireless devices. The beamforming algorithm determines the excitation amplitudes and phases of each sub-array. Power dividers are designed using a scheme of equal/unequal power division to meet the requirements of amplitude. And phase shifters are used to create required phases. To obtain a compact design, a substrate integrated waveguide (SIW) feeding structure are employed to integrate power dividers, phase shifters, and waveguide transitions into a single part. Quadratic recursive exhaustive search in combination with full-wave simulation is used to optimize the design. Further improvements are made to achieve a more compact feeding structure. The realized array provides a stable flat shoulder shaped radiation pattern in the H-plane. In addition, its maximal gain appears in the boresight direction, which is usually a challenge for patch element array. The realized gain is 22 dBi, and the ripple in the shoulder range is less than 2.3 dB, which is better than other designs. The feeding structure is only 14mm× 16mm large, showing a minimized design. The demonstrated antenna presents itself to be an excellent hardware candidate for IoT and IVTS. © 2014 IEEE.

关键词： Voltage dividers

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Improving Accuracy of the IμUWB fusion Positioning Approach Utilizing ESEKF and VBUKF for Underground Coal Mining Working Face

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IEEE Internet of Things Journal 2025年

作者： Cao, Bo Jiang, Mingrui Li, Menglan Ke, Xuran Zhang, Chao Zhang, Hua Zeng, Qiliang Xu, Biyong Anhui Science and Technology University School of Mechanical Engineering Chuzhou233100 China Hefei University of Technology School of Mechanical Engineering Hefei230041 China Anhui Engineering Research Center on Information Fusion and Control of Intelligent Robot Anhui Wuhu241002 China

The high-precision positioning of the shearer in underground coal mines remains a significant challenge task for realizing automation and intelligent coal mining. Most of the presently conventional positioning approaches, nonetheless, tend to deliver low accuracy and unreliable estimations in the GPSdenied underground coal mine environment. Additionally, the current experiments remain in the simulation verification stage while lacking of the real field experiments. In order to improve reliability and positioning accuracy of target node (TN) in coal mines, this paper proposes a fusion positioning scheme with the combination of the inertial measurement unit (IMU) and Ultrawideband (UWB) based on error state extended Kalman filter (ESEKF) approach with the utilization of the available measurements obtained from IMU system and the established UWB localization system. Subsequently, the VBUKF method that incorporates the variational Bayesian (VB) and unscented Kalman filter (UKF) is implemented to the result of fusion localization with consideration of the changeable measurement noise to further eliminate the trajectory error and refine the final estimation accuracy. Furthermore, to bridge the research gap of the real field experiments using the IμUWB fusion system, the experimental investigation is performed to evaluate the effectiveness of the proposed method in the underground coal mine environment. The experimental results demonstrate that the presented ESEKF method, after applying the VBUKF smoothing, is capable to achieve better performances than the contrasted methods in terms of localization, and also can significantly improve the positioning accuracy of the shearer in the coal mining working face. © 2025 IEEE.

关键词： Coal mines

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