{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T16:55:20Z","timestamp":1776444920126,"version":"3.51.2"},"reference-count":55,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2023,6,4]],"date-time":"2023-06-04T00:00:00Z","timestamp":1685836800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Second Century Fund (C2F), Chulalongkorn University, Thailand, and the Thailand Science Research and Innovation Fund, Chulalongkorn University","award":["IND66210017"],"award-info":[{"award-number":["IND66210017"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Robotics"],"abstract":"<jats:p>Compliance actuation systems are efficient and safe, drawing attention to their development. However, compliance has caused bandwidth loss, instability, and mechanical vibration in robotic systems. Variable physical damping was introduced to address these issues. This paper presents a technique for obtaining variable damping properties using an electromagnetic brake. The relationship mapping of the voltage and the braking torque is studied and applied to the variable damping concept. A new model is proposed to demonstrate the actuation system performance gained by introducing physical damping. The experimental setup comprises an electromagnetic brake and a motor with an integrated controller for speed control and torque feedback. The motor provides the motion, while the electromagnetic brake replicates the damping through a friction mechanism. The variable damping concept was evaluated experimentally using a 1-degree-of-freedom rotational system. Experimental results show that the proposed concept can generate the desired mechanical damping with a high degree of fidelity.<\/jats:p>","DOI":"10.3390\/robotics12030080","type":"journal-article","created":{"date-parts":[[2023,6,5]],"date-time":"2023-06-05T02:57:47Z","timestamp":1685933867000},"page":"80","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":19,"title":["Variable Damping Actuator Using an Electromagnetic Brake for Impedance Modulation in Physical Human\u2013Robot Interaction"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1443-8209","authenticated-orcid":false,"given":"Zahid","family":"Ullah","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5002-7568","authenticated-orcid":false,"given":"Ronnapee","family":"Chaichaowarat","sequence":"additional","affiliation":[{"name":"International School of Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand"}]},{"given":"Witaya","family":"Wannasuphoprasit","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand"}]}],"member":"1968","published-online":{"date-parts":[[2023,6,4]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1601","DOI":"10.1016\/j.robot.2013.06.009","article-title":"Variable impedance actuators: A review","volume":"61","author":"Vanderborght","year":"2013","journal-title":"Rob. 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