{"id":13533,"date":"2026-04-30T11:23:44","date_gmt":"2026-04-30T09:23:44","guid":{"rendered":"https:\/\/www.icdrachten.nl\/?post_type=jobs&#038;p=13533"},"modified":"2026-05-07T13:34:07","modified_gmt":"2026-05-07T11:34:07","slug":"sensing-method-for-resonant-actuators","status":"publish","type":"jobs","link":"https:\/\/www.icdrachten.nl\/en\/jobs\/sensing-method-for-resonant-actuators\/","title":{"rendered":"Sensing Method for Resonant Actuators (\u2013 Candidate in progress)"},"content":{"rendered":"<p><strong>Problem description.<\/strong><\/p>\n\n\n\n<p>The resonant magnetic actuator is often applied in power toothbrushes. This actuator has many advantages over a drivetrain consisting of a permanent-magnet motor with an eccentric. It is much easier to realize a silent, high-frequency driver with a longer lifespan. Furthermore, the resonant drive can be seen as a direct-drive system that operates close to the final load, thereby achieving high efficiency.<\/p>\n\n\n\n<p>However, the problem is that the resonant actuator produces a stroke that is dependent on the load, while the motor with an eccentric provides a constant stroke. Various approaches could be considered to obtain a more stable stroke. One solution often sought is in the choice of the operating point: a driving frequency further from resonance increases stability but also leads to lower efficiency. A substantial technical solution involves adding a control loop. Stable and efficient designs become possible, but the drivetrain also becomes more costly due to the required stroke sensors.<\/p>\n\n\n\n<p><strong>Relevance<\/strong><strong><\/strong><\/p>\n\n\n\n<p>The central idea behind this assignment is to investigate a system in which the actuator also functions as a sensor. The instantaneous stroke is reconstructed from the actuator voltage and current using an algorithm. A measurement and control system is then proposed to stabilize the stroke.<\/p>\n\n\n\n<p><strong>Aimed output<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What will the student need to do?<ul><li>Examining a suitable stroke reconstruction algorithm. Because the nature of the actuator used is of great importance, the different actuator properties are mapped out.<\/li><\/ul><ul><li>Testing the mentioned sensor function, both in simulations and in practice.<\/li><\/ul><ul><li>Investigating sensor quality sensitivity due to variations in actuator properties.<\/li><\/ul><ul><li>Designing a control loop that uses the sensor method to stabilize the stroke.<\/li><\/ul><ul><li>Testing the controlled system, in simulation and in practice. Load variations must be considered.<\/li><\/ul>\n<ul class=\"wp-block-list\">\n<li>Writing a report in which all the findings are described.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Main topics the student will work on<ul><li>Stroke quality and efficiency of the toothbrush drivetrain<\/li><\/ul><ul><li>Efficient sampling techniques<\/li><\/ul><ul><li>Non-linear resonant actuators<\/li><\/ul>\n<ul class=\"wp-block-list\">\n<li>\u00a0Stable control loops for resonant drivetrain with a highly varying load<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p><strong>Initiator\/Supervisor: <\/strong>P.J. Bax<\/p>\n\n\n\n<p><strong>Type of assignment: <\/strong>Graduation project<br><strong>Desired duration: 6 months<\/strong><br><br>Publication date: April 30th, 2026<\/p>","protected":false},"excerpt":{"rendered":"<p>Problem description The resonant magnetic actuator is frequently used in power toothbrushes. This actuator offers several advantages over a drivetrain that uses a permanent-magnet motor with an eccentric cam. It is significantly easier to achieve a quiet, high-frequency driver with a longer lifespan. Furthermore, the resonant drive can be considered a direct-drive system, which\u2026<\/p>","protected":false},"author":14,"featured_media":0,"parent":0,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":true,"_breakdance_hide_in_design_set":false,"_breakdance_tags":""},"class_list":["post-13533","jobs","type-jobs","status-publish","hentry"],"acf":{"header_image":"","location":{"address":"Philips Consumer Lifestyle B.V., Oliemolenstraat, Drachten, Nederland","lat":53.1073874,"lng":6.0895086,"zoom":14,"place_id":"ChIJszumkdJRyEcRSrjlXxwqkYU","name":"Philips Consumer Lifestyle B.V.","street_number":5,"street_name":"Oliemolenstraat","city":"Drachten","state":"Friesland","state_short":"FR","post_code":"9203 ZN","country":"Nederland","country_short":"NL"},"level_of_education":["hbo","wo"],"period":["6 maanden - 1 jaar"],"apply_before_date":null,"interests":["Engineering","Innovatie","Mechatronica","R&amp;D","Elektronica"],"internship":true,"representative_name":"Peter Bax","email__url_":"email","representative_email":"","representative_link":"p.j.bax@philips.com","bedrijf":14},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Sensing Method for resonant actuators ( - Candidate in progress) - ICDrachten<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.icdrachten.nl\/en\/jobs\/sensing-method-for-resonant-actuators\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sensing Method for resonant actuators ( - Candidate in progress) - ICDrachten\" \/>\n<meta property=\"og:description\" content=\"Problem description The resonant magnetic actuator is often applied in the power toothbrush. This actuator has many advantages above a drive train consisting of a permanent-magnet motor with eccentric. It is much easier to realise a silent high-frequency driver, with a higher lifetime. Further the resonant drive can be seen as a direct-drive system, which...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.icdrachten.nl\/en\/jobs\/sensing-method-for-resonant-actuators\/\" \/>\n<meta property=\"og:site_name\" content=\"ICDrachten\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-07T11:34:07+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.icdrachten.nl\\\/jobs\\\/sensing-method-for-resonant-actuators\\\/\",\"url\":\"https:\\\/\\\/www.icdrachten.nl\\\/jobs\\\/sensing-method-for-resonant-actuators\\\/\",\"name\":\"Sensing Method for resonant actuators ( - Candidate in progress) - ICDrachten\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.icdrachten.nl\\\/#website\"},\"datePublished\":\"2026-04-30T09:23:44+00:00\",\"dateModified\":\"2026-05-07T11:34:07+00:00\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.icdrachten.nl\\\/jobs\\\/sensing-method-for-resonant-actuators\\\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.icdrachten.nl\\\/#website\",\"url\":\"https:\\\/\\\/www.icdrachten.nl\\\/\",\"name\":\"ICDrachten\",\"description\":\"Innovatiecluster Drachten High Tech Systems\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.icdrachten.nl\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Sensing Method for Resonant Actuators ( - Candidate in progress) - ICDrachten","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.icdrachten.nl\/en\/jobs\/sensing-method-for-resonant-actuators\/","og_locale":"en_US","og_type":"article","og_title":"Sensing Method for resonant actuators ( - Candidate in progress) - ICDrachten","og_description":"Problem description The resonant magnetic actuator is often applied in the power toothbrush. This actuator has many advantages above a drive train consisting of a permanent-magnet motor with eccentric. It is much easier to realise a silent high-frequency driver, with a higher lifetime. Further the resonant drive can be seen as a direct-drive system, which...","og_url":"https:\/\/www.icdrachten.nl\/en\/jobs\/sensing-method-for-resonant-actuators\/","og_site_name":"ICDrachten","article_modified_time":"2026-05-07T11:34:07+00:00","twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.icdrachten.nl\/jobs\/sensing-method-for-resonant-actuators\/","url":"https:\/\/www.icdrachten.nl\/jobs\/sensing-method-for-resonant-actuators\/","name":"Sensing Method for Resonant Actuators ( - Candidate in progress) - ICDrachten","isPartOf":{"@id":"https:\/\/www.icdrachten.nl\/#website"},"datePublished":"2026-04-30T09:23:44+00:00","dateModified":"2026-05-07T11:34:07+00:00","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.icdrachten.nl\/jobs\/sensing-method-for-resonant-actuators\/"]}]},{"@type":"WebSite","@id":"https:\/\/www.icdrachten.nl\/#website","url":"https:\/\/www.icdrachten.nl\/","name":"ICDrachten","description":"Innovatiecluster Drachten High Tech Systems","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.icdrachten.nl\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/jobs\/13533","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/jobs"}],"about":[{"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/types\/jobs"}],"author":[{"embeddable":true,"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/comments?post=13533"}],"acf:user":[{"embeddable":true,"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/users\/14"}],"wp:attachment":[{"href":"https:\/\/www.icdrachten.nl\/en\/wp-json\/wp\/v2\/media?parent=13533"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}