http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
정성환(Seonghwan Jeong),전봉환(Bong-Huan Jun),이지홍(Lee Jihong) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.6
In previous studies, analyzed swimming patterns and suggested a method to control the propulsive force even while the swimming pattern was in progress. And a simple controller was designed to confirm whether the suggested methods were able to control and a simulation has affirmed it. In this paper, The proposed methods apply to CALEB 10, a biomimetic underwater articulated robot and the result was verified.
Carbon Nanocomposite Based Mechanical Sensing and Energy Harvesting
Changyoon Jeong,Chanwoo Joung,Seonghwan Lee,Maria Q. Feng,Young-Bin Park 한국정밀공학회 2020 International Journal of Precision Engineering and Vol.7 No.1
Progresses in sensor and energy technologies have been an important driving force for the rapid development of these industries and have drawn the attention of researchers on environmental concerns. In particular, carbon nanomaterial (carbon nanotubes, graphene, graphite, etc.)-based composites are widely used for sensor and energy harvesting applications owing to their excellent electrical, thermal, and mechanical properties. In this review, we have discussed various aspects of the use of carbon nanocomposites for the development of sensor and energy harvesting devices. These devices have shown outstanding sensing and energy harvesting performances. Various carbon nanomaterial-based composites with sophisticated structural and material designs have been developed to improve their sensing performance for various applications. We have also reviewed recent technological developments in carbon nanocomposite-based energy generators that adopt thermoelectric and triboelectric working mechanisms. Further research on the development of carbon nanocomposites with enhanced sensing and energy harvesting properties will expand the range of their applications to automotive, aerospace, artificial skin, healthcare, and environmental/infrastructure industries.
Jayoung Kim,Seonghwan Jeong,Jong-Oh Park,Han-Sol Lee,Cheong Lee,Chang-Sei Kim 제어·로봇·시스템학회 2023 International Journal of Control, Automation, and Vol.21 No.3
Herein, we present a novel electromagnetic field control methodology against a heating problem that can perform both desired actuation and lower heating of an electromagnet actuator comprising several electromagnets for magnetically actuated microrobot. The proposed method can balance the heating temperature of each electromagnet in a multiple coiled electromagnetic actuator which should be sustained in a similar state to prevent overheating while maintaining a desired magnetic force. Based on the conventional magnetic field model, the controller employs a real-time updated minimum weighted norm of induced currents by considering the physically limited current source and temperature feedback of each coil. The simulation results indicate that the heating temperature is lower than the conventional method during the same operation time. The performance of capsule motion and respective heating temperature through the proposed method was validated in ex-vivo experiments in a pig intestine for the actual clinical application. During the whole motion cycle of a wireless magnetic capsule in the intestine sample, the measured heating temperature could be significantly reduced. Hence, the temperatures of all the electromagnets were balanced at a similar level without any extremely high temperatures for specific electromagnets. Eventually, the proposed control method can extend the operating time of the conventional electromagnetic actuator and enhance the capability of real application.