{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:28:36Z","timestamp":1772252916737,"version":"3.50.1"},"reference-count":32,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2022,7,27]],"date-time":"2022-07-27T00:00:00Z","timestamp":1658880000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100003725","name":"National Research Foundation of Korea","doi-asserted-by":"publisher","award":["2021R1C1C1014661"],"award-info":[{"award-number":["2021R1C1C1014661"]}],"id":[{"id":"10.13039\/501100003725","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Research Grant of Kwangwoon University","award":["2021R1C1C1014661"],"award-info":[{"award-number":["2021R1C1C1014661"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>The magnetic navigation system (MNS) with gradient and uniform saddle coils is an effective system for manipulating various medical magnetic robots because of its compact structure and the uniformity of its magnetic field and field gradient. Since each coil of the MNS was geometrically optimized to generate strong uniform magnetic field or field gradient, it is considered that no special optimization is required for the MNS. However, its electrical characteristics can be still optimized to utilize the maximum power of a power supply unit with improved operating time and a stronger time-varying magnetic field. Furthermore, the conventional arrangement of the coils limits the maximum three-dimensional (3D) rotating magnetic field. In this paper, we propose an electrical optimization method based on a novel arrangement of the MNS. We introduce the objective functions, constraints, and design variables of the MNS considering electrical characteristics such as resistance, current density, and inductance. Then, we design an MNS using an optimization algorithm and compare it with the conventional MNS; the proposed MNS generates a magnetic field or field gradient 22% stronger on average than that of the conventional MNS with a sevenfold longer operating time limit, and the maximum three-dimensional rotating magnetic field is improved by 42%. We also demonstrate that the unclogging performance of the helical robot improves by 54% with the constructed MNS.<\/jats:p>","DOI":"10.3390\/s22155603","type":"journal-article","created":{"date-parts":[[2022,7,28]],"date-time":"2022-07-28T03:21:16Z","timestamp":1658978476000},"page":"5603","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Electrical Optimization Method Based on a Novel Arrangement of the Magnetic Navigation System with Gradient and Uniform Saddle Coils"],"prefix":"10.3390","volume":"22","author":[{"given":"Sungjun","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Robotics, Kwangwoon University, Seoul 01897, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mingyu","family":"Cho","sequence":"additional","affiliation":[{"name":"Department of Robotics, Kwangwoon University, Seoul 01897, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seyeong","family":"Im","sequence":"additional","affiliation":[{"name":"Department of Robotics, Kwangwoon University, Seoul 01897, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Joongho","family":"Yun","sequence":"additional","affiliation":[{"name":"Department of Robotics, Kwangwoon University, Seoul 01897, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5892-196X","authenticated-orcid":false,"given":"Jaekwang","family":"Nam","sequence":"additional","affiliation":[{"name":"Department of Robotics, Kwangwoon University, Seoul 01897, Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2022,7,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"113654","DOI":"10.1016\/j.sna.2022.113654","article-title":"Resonance-Based Design of Wireless Magnetic Capsule for Effective Sampling of Microbiome in Gastrointestinal Tract","volume":"342","author":"Nam","year":"2022","journal-title":"Sens. Actuators A"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"2616","DOI":"10.1109\/TMECH.2020.3043454","article-title":"Blindly Controlled Magnetically Actuated Capsule for Noninvasive Sampling of the Gastrointestinal Microbiome","volume":"26","author":"Shokrollahi","year":"2021","journal-title":"IEEE\/ASME Trans. Mechatron."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1202","DOI":"10.1109\/LRA.2019.2894504","article-title":"Cable-Less, Magnetically Driven Forceps for Minimally Invasive Surgery","volume":"4","author":"Forbrigger","year":"2019","journal-title":"IEEE Robot. Autom. Lett."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Bernat, J., Gajewski, P., Kapela, R., Marcinkowska, A., and Superczy\u0144ska, P. (2022). Design, Fabrication and Analysis of Magnetorheological Soft Gripper. Sensors, 22.","DOI":"10.3390\/s22072757"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"391","DOI":"10.1109\/TIE.2020.2965480","article-title":"Steering, Tunneling, and Stent Delivery of a Multifunctional Magnetic Catheter Robot to Treat Occlusive Vascular Disease","volume":"68","author":"Lee","year":"2020","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Kim, M.C., Kim, E.S., Park, J.O., Choi, E., and Kim, C.S. (2020). Robotic Localization Based on Planar Cable Robot and Hall Sensor Array Applied to Magnetic Capsule Endoscope. Sensors, 20.","DOI":"10.3390\/s20205728"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Ji, D.M., Jung, W.S., and Kim, S.H. (2021). Wireless Manipulation Mechanism and Analysis for Actively Assistive Pinch Movements. Sensors, 21.","DOI":"10.3390\/s21186216"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"292","DOI":"10.1109\/TBME.2005.862570","article-title":"Method of Propulsion of a Ferromagnetic Core in the Cardiovascular System through Magnetic Gradients Generated by an MRI System","volume":"53","author":"Mathieu","year":"2006","journal-title":"IEEE Trans. Biomed. Eng."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2402","DOI":"10.1007\/s10439-019-02317-x","article-title":"Magnetic Resonance Navigation for Targeted Embolization in a Two-Level Bifurcation Phantom","volume":"47","author":"Li","year":"2019","journal-title":"Ann. Biomed. Eng."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"166206","DOI":"10.1016\/j.jmmm.2019.166206","article-title":"Simultaneous Magnetic Particle Imaging and Navigation of Large Superparamagnetic Nanoparticles in Bifurcation Flow Experiments","volume":"498","author":"Griese","year":"2020","journal-title":"J. Magn. Magn. Mater."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"77","DOI":"10.1016\/j.proeng.2016.11.017","article-title":"Computational Study of the Optimum Gradient Magnetic Field for the Navigation of the Spherical Particles in the Process of Cleaning the Water from Heavy Metals","volume":"162","author":"Karvelas","year":"2016","journal-title":"Procedia Eng."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"345","DOI":"10.1016\/j.jmmm.2016.10.056","article-title":"Development of a Real Time Imaging-Based Guidance System of Magnetic Nanoparticles for Targeted Drug Delivery","volume":"427","author":"Zhang","year":"2017","journal-title":"J. Magn. Magn. Mater."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"137","DOI":"10.1007\/s12213-020-00127-2","article-title":"Swarm of Magnetic Nanoparticles Steering in Multi-Bifurcation Vessels under Fluid Flow","volume":"16","author":"Hoshiar","year":"2020","journal-title":"J. Micro-Bio Robot."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"1006","DOI":"10.1109\/TRO.2010.2073030","article-title":"OctoMag: An Electromagnetic System for 5-DOF Wireless Micromanipulation","volume":"26","author":"Kummer","year":"2010","journal-title":"IEEE Trans. Robot."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1177\/0278364915583539","article-title":"Six-Degree-of-Freedom Magnetic Actuation for Wireless Microrobotics","volume":"35","author":"Diller","year":"2016","journal-title":"Int. J. Robot. Res."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"5673","DOI":"10.1109\/TIE.2017.2782220","article-title":"Magnetic Navigation System Utilizing a Closed Magnetic Circuit to Maximize Magnetic Field and a Mapping Method to Precisely Control Magnetic Field in Real Time","volume":"65","author":"Nam","year":"2017","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1007\/s12213-013-0070-8","article-title":"Comparison, Optimization, and Limitations of Magnetic Manipulation Systems","volume":"8","author":"Erni","year":"2013","journal-title":"J. Micro-Bio Robot."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"1007","DOI":"10.1163\/016918611X568620","article-title":"Velocity Control with Gravity Compensation for Magnetic Helical Microswimmers","volume":"25","author":"Mahoney","year":"2011","journal-title":"Adv. Robot."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"429","DOI":"10.1016\/j.sna.2011.08.020","article-title":"Enhanced Locomotive and Drilling Microrobot Using Precessional and Gradient Magnetic Field","volume":"171","author":"Jeong","year":"2011","journal-title":"Sens. Actuators A"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Bell, D.J., Leutenegger, S., Hammar, K.M., Dong, L.X., and Nelson, B.J. (2007, January 10\u201314). Flagella-Like Propulsion for Microrobots Using a Nanocoil and a Rotating Rlectromagnetic Field. Proceedings of the 2007 IEEE International Conference on Robotics and Automation, Rome, Italy.","DOI":"10.1109\/ROBOT.2007.363136"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1221","DOI":"10.1109\/TMECH.2012.2201494","article-title":"3-D Locomotive and Drilling Microrobot Using Novel Stationary EMA System","volume":"18","author":"Choi","year":"2013","journal-title":"IEEE\/ASME Trans. Mechatron."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"115017","DOI":"10.1088\/0964-1726\/18\/11\/115017","article-title":"Two-Dimensional Locomotion of a Microrobot with a Novel Stationary Electromagnetic Actuation System","volume":"18","author":"Choi","year":"2009","journal-title":"Smart Mater. Struct."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1060","DOI":"10.1109\/TRO.2013.2257581","article-title":"Adaptive Controller and Observer for a Magnetic Microrobot","volume":"29","author":"Arcese","year":"2013","journal-title":"IEEE Trans. Robot."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1177\/0278364906065389","article-title":"Modeling and Control of Untethered Biomicrorobots in a Fluidic Environment Using Electromagnetic Fields","volume":"25","author":"Yesin","year":"2006","journal-title":"Int. J. Robot. Res."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"297","DOI":"10.1016\/j.sna.2010.04.037","article-title":"Novel Electromagnetic Actuation System for Three-Dimensional Locomotion and Drilling of Intravascular Microrobot","volume":"161","author":"Yu","year":"2010","journal-title":"Sens. Actuators A"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1943","DOI":"10.1109\/TMAG.2010.2040144","article-title":"Magnetic Navigation System with Gradient and Uniform Saddle Coils for the Wireless Manipulation of Micro-robots in Human Blood Vessels","volume":"46","author":"Jeon","year":"2010","journal-title":"IEEE Trans. Magn."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"07E702","DOI":"10.1063\/1.3671411","article-title":"Magnetic Navigation System for the Precise Helical and Translational Motions of a Microrobot in Human Blood Vessels","volume":"111","author":"Jeon","year":"2012","journal-title":"J. Appl. Phys."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"2403","DOI":"10.1109\/TMAG.2011.2148168","article-title":"Utilization of Magnetic Gradients in a Magnetic Navigation System for the Translational Motion of a Micro-robot in Human Blood Vessels","volume":"47","author":"Jeon","year":"2011","journal-title":"IEEE Trans. Magn."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"410","DOI":"10.1016\/j.sna.2010.08.014","article-title":"EMA System with Gradient and Uniform Saddle Coils for 3D Locomotion of Microrobot","volume":"163","author":"Choi","year":"2010","journal-title":"Sens. Actuators A"},{"key":"ref_30","first-page":"1","article-title":"Electromagnetic Navigation System Using Simple Coil Structure (4 Coils) for 3-D Locomotive Microrobot","volume":"51","author":"Go","year":"2015","journal-title":"IEEE Trans. Magn."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"10","DOI":"10.1089\/soro.2018.0171","article-title":"Magnetically Actuated Soft Capsule Endoscope for Fine-Needle Biopsy","volume":"7","author":"Son","year":"2019","journal-title":"Soft Robot."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"1434","DOI":"10.1177\/0278364909341658","article-title":"How Should Microrobots Swim?","volume":"28","author":"Abbott","year":"2009","journal-title":"Int. J. Robot. 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