{"id":759,"date":"2022-04-04T14:06:34","date_gmt":"2022-04-04T05:06:34","guid":{"rendered":"http:\/\/www.sawada.phys.waseda.ac.jp\/?page_id=759"},"modified":"2022-08-05T12:03:18","modified_gmt":"2022-08-05T03:03:18","slug":"%e3%83%a1%e3%83%b3%e3%83%90%e3%83%bc-%e4%b8%ad%e6%a2%9d-%e5%b4%87","status":"publish","type":"page","link":"https:\/\/www.sawada.phys.waseda.ac.jp\/?page_id=759","title":{"rendered":"\u30e1\u30f3\u30d0\u30fc | \u4e2d\u689d \u5d07"},"content":{"rendered":"<p><strong>\u5f62\u72b6\u8a18\u61b6\u5408\u91d1\u306e\u7528\u3044\u305f\u30d0\u30a4\u30d6\u30ec\u30fc\u30bf\u306e\u958b\u767a<\/strong><\/p>\n<p>\u5f62\u72b6\u8a18\u61b6\u5408\u91d1(SMA)\u30ef\u30a4\u30e4\u306f\u3001\u3042\u308b\u6e29\u5ea6\u3088\u308a\u9ad8\u3044\u6e29\u5ea6\u306b\u306a\u308b\u3068\u53ce\u7e2e\u3057\u3066\u6e29\u5ea6\u3092\u4e0b\u3052\u308b\u3068\u5f1b\u7de9\u3057\u307e\u3059\u3002<br \/>\n\u30d1\u30eb\u30b9\u5e45\u5909\u8abf(PWM)\u96fb\u5727\u3092SMA\u30ef\u30a4\u30e4\u306b\u304b\u3051\u308b\u3053\u3068\u3067\u3001\u30d1\u30eb\u30b9\u304cHi\u306b\u306a\u3063\u3066\u3044\u308b\u9593\u306f\u30b8\u30e5\u30fc\u30eb\u71b1\u306b\u3088\u3063\u3066SMA\u30ef\u30a4\u30e4\u306f\u53ce\u7e2e\u3057\u3066Low\u306b\u306a\u3063\u3066\u3044\u308b\u9593\u306f\u653e\u71b1\u306b\u3088\u3063\u3066\u5f1b\u7de9\u3059\u308b\u3053\u3068\u304c\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002<br \/>\n\u3053\u306e\u7279\u6027\u3092\u5229\u7528\u3057\u3066\u3001\u304a\u3082\u308a(\u5c0f\u3055\u306a\u57fa\u677f)\u306e\u4e00\u65b9\u306bSMA\u30ef\u30a4\u30e4\u3001\u4ed6\u65b9\u306b\u3070\u306d\u306a\u3069\u306e\u5f3e\u6027\u4f53\u3092\u3064\u306a\u304e\u3001SMA\u30ef\u30a4\u30e4\u306b\u5fdc\u529b\u304c\u304b\u304b\u308b\u72b6\u614b\u304b\u3089\u3001SMA\u30ef\u30a4\u30e4\u306e\u53ce\u7e2e\u3068\u5f1b\u7de9\u306b\u3088\u3063\u3066\u304a\u3082\u308a\u3092\u52d5\u304b\u3059\u3053\u3068\u3067\u3001\u632f\u52d5\u3092\u767a\u751f\u3055\u305b\u307e\u3059\u3002<br \/>\n\u5f93\u6765\u306e\u504f\u5fc3\u30e2\u30fc\u30bf\u30fc\u3092\u7528\u3044\u305f\u30d0\u30a4\u30d6\u30ec\u30fc\u30bf\u3084\u30ea\u30cb\u30a2\u5171\u632f\u30a2\u30af\u30c1\u30e5\u30a8\u30fc\u30bf\u306b\u66ff\u308f\u308a\u3001\u65b0\u305f\u306a\u30d0\u30a4\u30d6\u30ec\u30fc\u30bf\u3068\u306a\u308b\u3053\u3068\u3092\u76ee\u6a19\u306b\u7814\u7a76\u3057\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n<p>Shape memory alloy (SMA) wire shrinks when temperature is raised, and relaxes when temperature is lowered. By applying a pulse width modulated (PWM) voltage signal to the SMA wire, the SMA wire repeatedly contracts due to Joule heat while the pulse is high and relaxes due to heat dissipation while the pulse is low.<br \/>\nUsing this characteristic, the SMA wire is connected to one side of the weight (a small substrate) and an elastic material such as a spring to the other side.Then, from the state of being pulled together, the contraction and relaxation of the SMA wire moves the weight to generate vibration.<br \/>\nMy research aims to create a new vibrator that will replace conventional vibrators using eccentric motors and linear resonance actuators.<\/p>\n<div style=\"width: 640px;\" class=\"wp-video\"><!--[if lt IE 9]><script>document.createElement('video');<\/script><![endif]-->\n<video class=\"wp-video-shortcode\" id=\"video-759-1\" width=\"640\" height=\"360\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.sawada.phys.waseda.ac.jp\/wp-content\/uploads\/chujo.mp4?_=1\" \/><a href=\"https:\/\/www.sawada.phys.waseda.ac.jp\/wp-content\/uploads\/chujo.mp4\">https:\/\/www.sawada.phys.waseda.ac.jp\/wp-content\/uploads\/chujo.mp4<\/a><\/video><\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u5f62\u72b6\u8a18\u61b6\u5408\u91d1\u306e\u7528\u3044\u305f\u30d0\u30a4\u30d6\u30ec\u30fc\u30bf\u306e\u958b\u767a \u5f62\u72b6\u8a18\u61b6\u5408\u91d1(SMA)\u30ef\u30a4\u30e4\u306f\u3001\u3042\u308b\u6e29\u5ea6&#8230; <a class=\"more-link\" href=\"https:\/\/www.sawada.phys.waseda.ac.jp\/?page_id=759\">Continue Reading &rarr;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/759"}],"collection":[{"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=759"}],"version-history":[{"count":3,"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/759\/revisions"}],"predecessor-version":[{"id":865,"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=\/wp\/v2\/pages\/759\/revisions\/865"}],"wp:attachment":[{"href":"https:\/\/www.sawada.phys.waseda.ac.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}