Article
Computer Science, Information Systems
Kaiwen Chen, Ka Wai Eric Cheng, Yun Yang, Jianfei Pan
Summary: This paper discusses the slow dynamics and overshoot issues in the wireless power transfer system of electric vehicles, and proposes a feedforward control solution based on a small-signal model considering mutual inductance disturbance. Experimental results validate that this control method can effectively suppress overshoot and improve system stability.
Article
Engineering, Electrical & Electronic
Raza Sheikh, Jerry Potts, Paul Cox, Heng Ban, Daniel Wachs
Summary: In this study, we designed and optimized a low-frequency, inductive coupling transmission mechanism to wirelessly transmit power or signals through a test capsule wall. Inductive coupling was chosen for its ability to withstand high pressures and temperatures in nuclear environments. Through modeling and simulations, we analyzed various factors such as operating frequency, radial size, choice of driving coil, core, and shielding material to evaluate the efficiency of power transfer. Our results indicate that this technique is viable for transmitting power or signals for sensors in nuclear reactors.
IEEE SENSORS JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Giulia Di Capua, Antonio Maffucci, Kateryna Stoyka, Gennaro Di Mambro, Salvatore Ventre, Vincenzo Cirimele, Fabio Freschi, Fabio Villone, Nicola Femia
Summary: This paper presents a system-level approach for analyzing the performance of a dynamic Wireless Power Transfer System for electric vehicles, utilizing an analytical behavioral model which is validated against experimental data. The approach avoids the extensive use of computationally expensive 3D finite element simulations, providing a fast and accurate analysis of performance sensitivity. The system-level analysis assesses the sensitivity of power and efficiency of the WPTS to vehicle misalignment from the nominal trajectory during the dynamic charging process.
Article
Engineering, Electrical & Electronic
Dong Liu, Hong Zhang, Xiaoting Xiao, Qiuping Ma, Haoran Li, Guiyun Tian, Bin Gao, Jianbo Wu
Summary: This article proposes an equivalent conversion between eddy current sensor topology circuit and piezoelectric crystal topology circuit. Based on this conversion, a novel multiparameters separation method is designed to identify the inductance, capacitance, and resistance of the ECT sensor topology circuit through frequency-domain response. Experimental results validate the accuracy and consistency of the proposed method, which also provides additional parameters and improves the signal-to-noise ratio and sensitivity in crack detection compared to traditional ECT sensors.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Engineering, Electrical & Electronic
Dashan Wang, Libo Qian, Kexue Cui, Yongyuan Li
Summary: This paper proposes an inductive power transfer system for powering multiple sensor nodes at different distances. The relay coil acts as a power relay to enhance the magnetic field along the power transfer route and also supplies energy to the local load. A flexible design method for the adjacent coil distance is proposed to adjust power distribution.
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Yujun Shin, Seongho Woo, Jaewon Rhee, Changmin Lee, Haerim Kim, Sungryul Huh, Bumjin Park, Seungyoung Ahn
Summary: This article proposes a method to extract the coupling coefficient and the resonant frequency of the receiving side of a wireless power transfer system using only information from the transmitting side. The effectiveness of the method was confirmed through calculations, simulations, and experiments, showing that the coupling coefficient can be extracted with an error of less than 8% and the resonant frequency can be accurately predicted.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Chemistry, Analytical
Marco Cavaliere, Herman Alexander Jaeger, Kilian O'Donoghue, Padraig Cantillon-Murphy
Summary: Electromagnetic tracking is a safe, reliable, and cost-effective method for tracking medical instruments, but patient motion and magnetic field distortions can impact accuracy. Redundant magnetic sensors can help mitigate these effects. A proposed planar inductive sensor design offers high repeatability and cost benefits through mass PCB manufacturing processes.
Article
Engineering, Electrical & Electronic
Yuechuan Yu, Tram Nguyen, Prashant Tathireddy, Shad Roundy, Darrin J. Young
Summary: A wireless and battery-less glucose sensing system has been demonstrated for long-term implantable glucose monitoring. The system uses an oscillator-based inductive sensor and a glucose-sensitive hydrogel to detect glucose concentration. It has low power consumption and small size, and can operate reliably through wireless power delivery.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Chemistry, Physical
Chi Zhang, Jinkai Chen, Haoze Kuang, Jianhui Wu, Jie Li, Kaihang Zhang, Jin Hao, Shurong Dong, Yuhui Huang, Qilong Zhang, Yongjun Wu, Jikui Luo
Summary: In this research, a fully self-powered multi-parameter wireless sensing system based on TENG is demonstrated. By integrating TENG with RLC resonators, the energy harvested by TENG is directly converted into an oscillating signal containing multiple frequency components. A theoretical analysis method based on characteristic parameters is proposed and validated with experimental results. Additionally, a self-powered wireless strain distribution sensing system is developed to showcase the application potential of this technology.
Article
Multidisciplinary Sciences
Hussein M. E. Hussein, Matteo Rinaldi, Marvin Onabajo, Cristian Cassella
Summary: This study introduces a new type of wireless sensor network that does not require batteries or chips, using lumped components on a printed substrate to achieve sensing and information transmission, breaking traditional paradigms in energy supply and collection. The network possesses exceptional sensitivity and dynamic range without the need for expensive manufacturing. The device operates in the ultra-high-frequency range, capable of passively and continuously detecting temperature changes remotely.
SCIENTIFIC REPORTS
(2021)
Article
Computer Science, Information Systems
Oscar Lopez-Lapena
Summary: A sensor-to-microcontroller interface circuit for inductive sensors that does not require calibration is presented. The circuit utilizes a microcontroller and other components to accurately estimate the inductance of the sensor, with low systematic error.
Article
Engineering, Electrical & Electronic
Harry Weber, Harun Baran, Fabian Utermoehlen, Christian Schuster
Summary: Magnetic coupling is widely used in sensors and medical imaging, with a focus on inductive position sensors. A new method has been developed to derive a macro model describing the mutual inductance between coils based on their relative positions, which can be applied to complex coil geometries. This physics-based approach allows for further analysis in circuit design and performance evaluation, demonstrating its broad applicability in industrial and biomedical applications.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Chemistry, Analytical
Eduardo Hidalgo-Fort, Juan Antonio Gomez-Galan, Ramon Gonzalez-Carvajal, Pedro Sanchez-Cardenas, Carlos Clemente-Maya
Summary: We present an industrial wireless monitoring and control system designed to improve electro-refinery performance by using predictive maintenance. The system supports energy-harvesting devices through smart sensing and network management. It is self-powered from bus bars and features wireless communication and easy access to information and alarms. Field validation shows that the system has improved operational performance in detecting short circuits by 30% (reaching 97%) compared to traditional methods, thanks to the deployment of a neural network.
Article
Computer Science, Information Systems
Yulong Liu, Mengxia Yu, Bingyi Xia, Silong Wang, Miao Wang, Mingxun Chen, Siqi Dai, Tingzhe Wang, Terry Tao Ye
Summary: The article introduces a textile-based embroidered passive strain and displacement sensor functioned as a UHF RFID antenna, which can modulate RFID chip signals and wirelessly retrieve information from a few meters away without the need for a battery. The sensor is sensitive to strains and displacement caused by body movement, making it ideal for tracking various forms of body movements.
IEEE INTERNET OF THINGS JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Mitar Simic, Adrian K. Stavrakis, Milan Radovanovic, Asif Iqbal, Varun Jeoti, Goran M. Stojanovic
Summary: This article proposes a method for wireless readout of LC sensors using a portable device, which eliminates the need for costly and bulky laboratory equipment. The device is realized in the form of a printed circuit board (PCB) compatible with Arduino boards. The resonant frequency of the LC sensor is detected from the processing of the measured voltage across the reference resistor. Wireless readout of ten LC tags with the proposed device and laboratory impedance analyzer showed that the relative differences in estimated values are lower than 4% within the frequency range of 1-10 MHz.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Automation & Control Systems
Taegyun Kim, Sungkeun Yoo, TaeWon Seo, Hwa Soo Kim, Jongwon Kim
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2020)
Article
Automation & Control Systems
Sungkeun Yoo, Taegyun Kim, Myoungjae Seo, Joohyun Oh, Hwa Soo Kim, TaeWon Seo
Summary: This article introduces a novel dual-rope winch robot designed for building maintenance work on wall planes, featuring a dual-rope winch system and a thrust module. It proposes a feedforward control to predict and compensate for rope slip length and a proportional-integral controller for position error regulation. Experiments on a test bench show trajectory deviation within 0.5% of the target trajectory.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Automation & Control Systems
Myoungjae Seo, Sungkeun Yoo, Myeongjin Choi, Joohyun Oh, Hwa Soo Kim, TaeWon Seo
Summary: This article explores the use of a dual ascender robot for facade operations, presenting two suggestions for safe operations. By modeling a flexible nylon fiber rope, vibration control can be achieved through conversion. Additionally, input shaping control is utilized to reduce vibrations and shorten settling time effectively.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Automation & Control Systems
Hobyeong Chae, Garam Park, Jiseok Lee, Kyungmin Kim, Taegyun Kim, Hwa Soo Kim, TaeWon Seo
Summary: To address the risks and inefficiencies of facade cleaning of high-rise buildings, researchers have proposed an improved design featuring modularity, passive obstacle overcoming mechanism, and compensation for lateral disturbance. Experimental results show enhanced performance of the robot in cleaning various scenarios, including obstacle overcoming and lateral disturbance compensation.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2021)
Article
Robotics
KyungUk Lee, KyoungMin Ko, SungJun Park, Hwa Soo Kim, TaeWon Seo
Summary: In this study, a new mechanism is proposed to overcome obstacles and stabilize posture for a two-rope driven mobile robot (TRDMR) that moves on the facade of a building by suspending it on a fiber rope.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Robotics
SangGyun Kim, Sijun Ryu, Jeeho Won, Hwa Soo Kim, TaeWon Seo
Summary: This paper investigates how an inverted pendulum robot can overcome obstacles while climbing stairs using transformable wheels. Dynamic modeling of the varying wheel radius was conducted with the Lagrangian approach and simulations were carried out with MATLAB Simulink for validation. Future work includes testing the wheel on an actual robot model.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Robotics
Yunhyuk Lee, Sijun Ryu, Jee Ho Won, SangGyun Kim, Hwa Soo Kim, TaeWon Seo
Summary: This study presents modular transformable wheels capable of overcoming obstacles. The structure and transformation mechanism of the wheels are introduced, and the ability to climb up and down a staircase is experimentally verified.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2022)
Article
Automation & Control Systems
Hobyeong Chae, Yecheol Moon, KyungUk Lee, SungJun Park, Hwa Soo Kim, TaeWon Seo
Summary: This article introduces a novel wall-cleaning robot Edelstro-M2, with the ability to perform both vertical and horizontal movements on walls and without the need for additional infrastructure. Real-world experiments have demonstrated the robot's mobility and cleaning performance.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Automation & Control Systems
Hobyeong Chae, Garam Park, Jiseok Lee, Hwa Soo Kim, TaeWon Seo
Summary: A compliant parallel structure-based position sensing device is proposed in the study to measure and compensate for lateral disturbances in the movement of a facade cleaning robot equipped with a gondola. Experimental analysis has verified the effective disturbance compensation feature of the proposed mechanism.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)
Article
Automation & Control Systems
Kyungmin Kim, Changkook Seo, Hwa Soo, TaeWon Seo
Summary: With the increase in high-rise buildings, the need for cleaning and managing their facades has also increased. Facade-cleaning robots have been developed to protect human workers from danger. Among these robots, the gondola-mounted facade-cleaning robot has advantages such as obstacle overcoming, simplicity, cleaning ability, and easy installation. However, there are still challenges in cleaning around obstacles and dealing with disturbances. In this study, a z-axis manipulator is proposed to minimize uncleaned areas, using laser and light sensors to detect obstacles and utilizing H-infinity control to handle disturbances.
Review
Computer Science, Information Systems
Taewon Seo, Sijun Ryu, Jee Ho Won, Youngsoo Kim, Hwa Soo Kim
Summary: Indoor service robots are widely used in various indoor environments for cleaning, delivery, education, guidance, and healthcare. However, the mobility of these robots is limited by obstacles like stairs. Despite many studies, a market-dominant stair-climbing robot has not yet been developed. This review examines the efforts made by engineers in this field, categorizes the locomotion mechanisms and sensing methods of stair-climbing robots, and proposes criteria for evaluating their performance.
Article
Computer Science, Information Systems
Youngjoo Lee, Myoungjae Seo, Sijun Ryu, Hwa Soo Kim, Taewon Seo
Summary: This paper presents a mechanism to overcome high obstacles by designing a specific wheel structure. The mechanism successfully overcame obstacles of different heights in the tests. Further analysis of reaction forces and additional experiments ensured directional stability when overcoming obstacles.
Article
Computer Science, Information Systems
Youngsoo Kim, Hwa Soo Kim, TaeWon Seo
Summary: This study introduces a novel shape-morphing wheel with two degrees-of-freedom, capable of adapting to various obstacles in different configurations. Through exhaustive search and analysis, a successful and effective 2-DOF shape-morphing wheel mechanism has been constructed.
Article
Computer Science, Information Systems
Myeongjin Choi, Myoungjae Seo, Hwa Soo Kim, Taewon Seo
Summary: The study introduced a new method based on the unscented Kalman filter for position estimation of the Dual Ascender Robot (DAR), improving performance compared to the previously used method. The method overcomes errors caused by rope slip in the ascender, leading to reduced errors in accuracy and repeatability by approximately 2-3 times as confirmed through testing.
Article
Automation & Control Systems
Hobyeong Chae, Garam Park, Jiseok Lee, Hwa Soo Kim, TaeWon Seo
Summary: This study proposes a compliant parallel structure-based position sensing device to measure lateral directional disturbances in the movement of facade cleaning robots, with experimental verification of the disturbance compensation feature.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2022)