{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,5]],"date-time":"2026-07-05T02:30:10Z","timestamp":1783218610849,"version":"3.54.6"},"reference-count":19,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2013,8,12]],"date-time":"2013-08-12T00:00:00Z","timestamp":1376265600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>An angular acceleration sensor can be used for the dynamic analysis of human and joint motions. In this paper, an angular acceleration sensor with novel structure based on the principle of electromagnetic induction is designed. The method involves the construction of a constant magnetic field by the excitation windings of sensor, and the cup-shaped rotor that cut the magnetic field. The output windings of the sensor generate an electromotive force, which is directly proportional to the angular acceleration through the electromagnetic coupling when the rotor has rotational angular acceleration. The mechanical structure and the magnetic working circuit of the sensor are described. The output properties and the mathematical model including the transfer function and state-space model of the sensor are established. The asymptotical stability of the sensor when it is working is verified by the Lyapunov Theorem. An angular acceleration calibration device based on the torsional pendulum principle is designed. The method involves the coaxial connection of the angular acceleration sensor, torsion pendulum and a high-precision angle sensor, and then an initial external force is applied to the torsion pendulum to produce a periodic damping angle oscillation. The angular acceleration sensor and the angle sensor will generate two corresponding electrical signals. The sensitivity coefficient of the angular acceleration sensor can be obtained after processing these two-channel signals. The experiment results show that the sensitivity coefficient of the sensor is about 17.29 mv\/Krad\u00b7s2. Finally,  the errors existing in the practical applications of the sensor are discussed and the corresponding improvement measures are proposed to provide effective technical support for the practical promotion of the novel sensor.<\/jats:p>","DOI":"10.3390\/s130810370","type":"journal-article","created":{"date-parts":[[2013,8,12]],"date-time":"2013-08-12T11:44:25Z","timestamp":1376307865000},"page":"10370-10385","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["A Novel Angular Acceleration Sensor Based on the Electromagnetic Induction Principle and Investigation of  Its Calibration Tests"],"prefix":"10.3390","volume":"13","author":[{"given":"Hao","family":"Zhao","sequence":"first","affiliation":[{"name":"Department of Mechanical and Electrical Engineering, Jiaxing University, No.56,  Yuexiu South Road, Jiaxing 314001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hao","family":"Feng","sequence":"additional","affiliation":[{"name":"Department of Information and Engineering Life, Hangzhou Dianzi University, No.1 Avenue,  2 Xiasha, Jianggan District, Hangzhou 310018, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2013,8,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1007\/s002210000603","article-title":"Reciprocal angular acceleration of the ankle and hip joints during quiet standing in humans","volume":"136","author":"Aramaki","year":"2011","journal-title":"Exp. 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Electric Machinery, China Machine Press."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/13\/8\/10370\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T21:48:34Z","timestamp":1760219314000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/13\/8\/10370"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,8,12]]},"references-count":19,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2013,8]]}},"alternative-id":["s130810370"],"URL":"https:\/\/doi.org\/10.3390\/s130810370","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,8,12]]}}}