{"id":1970,"date":"2024-07-06T01:31:49","date_gmt":"2024-07-05T18:31:49","guid":{"rendered":"https:\/\/www.tneutron.net\/industri\/?p=1970"},"modified":"2024-07-02T08:38:33","modified_gmt":"2024-07-02T01:38:33","slug":"inductive-position-sensor-and-electromagnet","status":"publish","type":"post","link":"https:\/\/www.tneutron.net\/industri\/inductive-position-sensor-and-electromagnet\/","title":{"rendered":"Inductive Position Sensor and Electromagnet"},"content":{"rendered":"<p><span class=\"notranslate\">The inductive sensor utilizes the inductance change<\/span><br \/>\n<span class=\"notranslate\"> \u2022 as a result of movement of the ferromagnetic core in the coil<\/span><br \/>\n<span class=\"notranslate\"> \u2022 as a result of the approaching ferromagnetic material<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image001.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image001\" src=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image001_thumb.jpg\" alt=\"clip_image001\" width=\"389\" height=\"113\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 3.26 Position sensor: (a) The core is moving flat (b) The rotating spinner I core (c) The series of inductance variables<\/span><\/p>\n<p><span class=\"notranslate\"> The reader circuit changes the inductance<\/span><br \/>\n<span class=\"notranslate\"> \u2022 two inductors arranged in bridge circuit, one as <i>dummy<\/i><\/span><br \/>\n<span class=\"notranslate\"> \u2022 bridge bias voltage is ac signal<\/span><br \/>\n<span class=\"notranslate\"> \u2022 the change of the inductation is converted linearly into a voltage change<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image006.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image006\" src=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image006_thumb.jpg\" alt=\"clip_image006\" width=\"145\" height=\"68\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> K <sub>L<\/sub> = sensitivity of inductance to position<\/span><br \/>\n<span class=\"notranslate\"> \u2022 ac output voltage converted to dc or read using phase detector<\/span><\/p>\n<p><a href=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image008.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image008\" src=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image008_thumb.jpg\" alt=\"clip_image008\" width=\"353\" height=\"165\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 3.27 Inductive position sensor test circuit<\/span><\/p>\n<p><span class=\"notranslate\"> Electromagnetic sensors use the emf force generated by coils undergoing magnetic field changes<\/span><br \/>\n<span class=\"notranslate\"> \u2022 the output voltage is proportional to the rate of change of the coil position to the magnetic source<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/image.png\"><img loading=\"lazy\" decoding=\"async\" title=\"image\" src=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/image_thumb.png\" alt=\"image\" width=\"352\" height=\"92\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> \u2022 the magnetic field changes obtained by the movement of the magnetic field source or the movement of the coil (as in the microphone and loudspeaker)<\/span><br \/>\n<a href=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image014.jpg\"><img loading=\"lazy\" decoding=\"async\" title=\"clip_image014\" src=\"https:\/\/www.tneutron.net\/industri\/wp-content\/uploads\/sites\/3\/2017\/09\/clip_image014_thumb.jpg\" alt=\"clip_image014\" width=\"403\" height=\"140\" border=\"0\" \/><\/a><br \/>\n<span class=\"notranslate\"> Figure 3.28 Position sensor usage: (a) on the microphone, (b) on the loudspeaker<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The inductive sensor utilizes the inductance change \u2022 as a result of movement of the ferromagnetic core in the coil<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[1830],"tags":[3379,3380,3381,3382,3383,3384,3385,3386,3387,3388,3389,3390,3391,3392,3393,3394,3395,3396],"class_list":["post-1970","post","type-post","status-publish","format-standard","hentry","category-english","tag-an-inductive-position-sensor-asic","tag-balluff-inductive-position-sensor","tag-contactless-inductive-position-sensor","tag-digiyes-double-position-inductive-wireless-charger","tag-hella-inductive-position-sensor","tag-inductive-angular-position-sensor","tag-inductive-crank-position-sensor","tag-inductive-crankshaft-position-sensor","tag-inductive-cylinder-position-sensors","tag-inductive-effect-at-meta-position","tag-inductive-linear-position-measuring","tag-inductive-linear-position-sensor","tag-inductive-non-contact-position-transmitter","tag-inductive-non-contact-position-sensors","tag-inductive-position-encoder","tag-inductive-position-measurement","tag-inductive-position-measuring-systems-pmi","tag-inductive-position-sensing"],"yoast_head":"<!-- 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