{"id":53866,"date":"2022-09-13T03:30:03","date_gmt":"2022-09-13T08:30:03","guid":{"rendered":"https:\/\/www.bjultrasonic.com\/piezo-ceramics-how-to-define-an-electric-field\/"},"modified":"2025-01-20T23:29:50","modified_gmt":"2025-01-21T04:29:50","slug":"piezo-ceramics-how-to-define-an-electric-field","status":"publish","type":"post","link":"https:\/\/www.bjultrasonic.com\/zh-hans\/piezo-ceramics-how-to-define-an-electric-field\/","title":{"rendered":"\u538b\u7535\u9676\u74f7\u6750\u6599\u4e2d\u7535\u573a\u5b9a\u4e49\u53ca\u6d4b\u91cf\u65b9\u6cd5\u8be6\u89e3"},"content":{"rendered":"<p>\u538b\u7535\u9676\u74f7\u4e2d\u7535\u573a\u7684\u5b9a\u4e49\u662f\u4e00\u4e2a\u770b\u4f3c\u7b80\u5355\u5374\u5305\u542b\u8bf8\u591a\u7ec6\u8282\u7684\u95ee\u9898\u3002\u5b83\u4e0d\u4ec5\u5173\u4e4e\u5bf9\u538b\u7535\u6548\u5e94\u7684\u7406\u89e3\uff0c\u4e5f\u76f4\u63a5\u5f71\u54cd\u5230\u538b\u7535\u5668\u4ef6\u7684\u8bbe\u8ba1\u548c\u5e94\u7528\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u5728\u538b\u7535\u9676\u74f7\u4e2d\u5982\u4f55\u5b9a\u4e49\u7535\u573a\uff0c\u5e76\u5206\u6790\u4e0d\u540c\u60c5\u51b5\u4e0b\u7535\u573a\u7684\u8868\u8fbe\u65b9\u5f0f\u3002<\/p>\n<h3>\u538b\u7535\u9676\u74f7\u7684\u6781\u5316\u548c\u7535\u573a<\/h3>\n<p>\u538b\u7535\u9676\u74f7\u6750\u6599\u5185\u90e8\u5b58\u5728\u5927\u91cf\u7684\u6781\u6027\u5fae\u6676\uff0c\u8fd9\u4e9b\u5fae\u6676\u7684\u53d6\u5411\u51b3\u5b9a\u4e86\u6750\u6599\u7684\u6574\u4f53\u6781\u5316\u5f3a\u5ea6\u3002\u5728\u672a\u65bd\u52a0\u5916\u529b\u6216\u7535\u573a\u7684\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4e9b\u6781\u6027\u5fae\u6676\u7684\u53d6\u5411\u662f\u968f\u673a\u7684\uff0c\u5b8f\u89c2\u4e0a\u8868\u73b0\u4e3a\u65e0\u6781\u5316\u72b6\u6001\u3002\u5f53\u65bd\u52a0\u5916\u7535\u573a\u65f6\uff0c\u6781\u6027\u5fae\u6676\u4f1a\u8bd5\u56fe\u6cbf\u5916\u7535\u573a\u65b9\u5411\u6392\u5217\uff0c\u4ece\u800c\u4ea7\u751f\u5b8f\u89c2\u7684\u6781\u5316\u3002\u8fd9\u4e2a\u6781\u5316\u8fc7\u7a0b\u662f\u538b\u7535\u6548\u5e94\u7684\u57fa\u7840\u3002\u7535\u573a\u5f3a\u5ea6\u7684\u5927\u5c0f\u76f4\u63a5\u5f71\u54cd\u6781\u5316\u7a0b\u5ea6\uff0c\u8fdb\u800c\u5f71\u54cd\u538b\u7535\u9676\u74f7\u7684\u6027\u80fd\u3002\u56e0\u6b64\uff0c\u5b9a\u4e49\u7535\u573a\u9700\u8981\u660e\u786e\u5176\u5728\u538b\u7535\u9676\u74f7\u5185\u90e8\u7684\u5206\u5e03\u548c\u4f5c\u7528\u65b9\u5f0f\u3002<\/p>\n<h3>\u7535\u573a\u5f3a\u5ea6\u4e0e\u7535\u4f4d\u79fb\u7684\u5173\u7cfb<\/h3>\n<p>\u5728\u538b\u7535\u9676\u74f7\u4e2d\uff0c\u7535\u573a\u5f3a\u5ea6(E)\u548c\u7535\u4f4d\u79fb(D)\u4e4b\u95f4\u5e76\u975e\u7b80\u5355\u7684\u7ebf\u6027\u5173\u7cfb\uff0c\u800c\u662f\u7531\u672c\u6784\u65b9\u7a0b\u6765\u63cf\u8ff0\u3002\u5bf9\u4e8e\u7ebf\u6027\u538b\u7535\u6750\u6599\uff0c\u672c\u6784\u65b9\u7a0b\u53ef\u4ee5\u8868\u793a\u4e3a\uff1a<\/p>\n<p>D = \u03b50E + Ps + d\u03c3<\/p>\n<p>\u5176\u4e2d\uff1a<\/p>\n<ul>\n<li>D\uff1a\u7535\u4f4d\u79fb\u77e2\u91cf<\/li>\n<li>\u03b50\uff1a\u771f\u7a7a\u4ecb\u7535\u5e38\u6570<\/li>\n<li>E\uff1a\u7535\u573a\u5f3a\u5ea6\u77e2\u91cf<\/li>\n<li>Ps\uff1a\u81ea\u53d1\u6781\u5316\u5f3a\u5ea6\u77e2\u91cf<\/li>\n<li>d\uff1a\u538b\u7535\u5e38\u6570\u77e9\u9635<\/li>\n<li>\u03c3\uff1a\u5e94\u529b\u5f20\u91cf<\/li>\n<\/ul>\n<table class=\"table table-striped table-bordered\">\n<thead>\n<tr>\n<th>\u7b26\u53f7<\/th>\n<th>\u7269\u7406\u91cf<\/th>\n<th>\u5355\u4f4d<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>D<\/td>\n<td>\u7535\u4f4d\u79fb<\/td>\n<td>C\/m\u00b2<\/td>\n<\/tr>\n<tr>\n<td>\u03b50<\/td>\n<td>\u771f\u7a7a\u4ecb\u7535\u5e38\u6570<\/td>\n<td>F\/m<\/td>\n<\/tr>\n<tr>\n<td>E<\/td>\n<td>\u7535\u573a\u5f3a\u5ea6<\/td>\n<td>V\/m<\/td>\n<\/tr>\n<tr>\n<td>Ps<\/td>\n<td>\u81ea\u53d1\u6781\u5316\u5f3a\u5ea6<\/td>\n<td>C\/m\u00b2<\/td>\n<\/tr>\n<tr>\n<td>d<\/td>\n<td>\u538b\u7535\u5e38\u6570<\/td>\n<td>m\/V<\/td>\n<\/tr>\n<tr>\n<td>\u03c3<\/td>\n<td>\u5e94\u529b<\/td>\n<td>Pa<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u4ece\u4e0a\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u7535\u4f4d\u79fb\u4e0d\u4ec5\u4e0e\u7535\u573a\u5f3a\u5ea6\u6709\u5173\uff0c\u8fd8\u4e0e\u81ea\u53d1\u6781\u5316\u548c\u5e94\u529b\u6709\u5173\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u5e38\u5e38\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u5408\u9002\u7684\u7535\u573a\u5b9a\u4e49\u65b9\u5f0f\u3002\u4f8b\u5982\uff0c\u5728\u6d4b\u91cf\u538b\u7535\u9676\u74f7\u7684\u4ecb\u7535\u5e38\u6570\u65f6\uff0c\u9700\u8981\u8003\u8651\u81ea\u53d1\u6781\u5316\u5bf9\u7535\u4f4d\u79fb\u7684\u5f71\u54cd\uff1b\u800c\u5728\u5206\u6790\u538b\u7535\u6362\u80fd\u5668\u7684\u6027\u80fd\u65f6\uff0c\u5219\u9700\u8981\u8003\u8651\u5e94\u529b\u5bf9\u7535\u4f4d\u79fb\u7684\u5f71\u54cd\u3002<\/p>\n<h3>\u7535\u573a\u7684\u6d4b\u91cf\u65b9\u6cd5<\/h3>\n<p>\u7535\u573a\u7684\u6d4b\u91cf\u65b9\u6cd5\u591a\u79cd\u591a\u6837\uff0c\u5e38\u7528\u7684\u65b9\u6cd5\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u9759\u7535\u8ba1\u6cd5:<\/strong>  \u5229\u7528\u9759\u7535\u8ba1\u6d4b\u91cf\u538b\u7535\u9676\u74f7\u8868\u9762\u7684\u7535\u52bf\u5dee\uff0c\u8fdb\u800c\u8ba1\u7b97\u7535\u573a\u5f3a\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u6d4b\u91cf\u76f8\u5bf9\u8f83\u5927\u7684\u7535\u573a\u3002<\/li>\n<li><strong>\u7535\u573a\u63a2\u9488\u6cd5:<\/strong> \u4f7f\u7528\u5fae\u5c0f\u7684\u7535\u573a\u63a2\u9488\u6d4b\u91cf\u538b\u7535\u9676\u74f7\u5185\u90e8\u7684\u5c40\u90e8\u7535\u573a\u5f3a\u5ea6\u3002\u8fd9\u79cd\u65b9\u6cd5\u7cbe\u5ea6\u8f83\u9ad8\uff0c\u4f46\u64cd\u4f5c\u8f83\u4e3a\u590d\u6742\u3002<\/li>\n<li><strong>\u6709\u9650\u5143\u5206\u6790\u6cd5:<\/strong> \u5229\u7528\u6709\u9650\u5143\u5206\u6790\u8f6f\u4ef6\u6a21\u62df\u538b\u7535\u9676\u74f7\u5185\u90e8\u7684\u7535\u573a\u5206\u5e03\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u9884\u6d4b\u590d\u6742\u7684\u7535\u573a\u5206\u5e03\uff0c\u4f46\u9700\u8981\u5efa\u7acb\u7cbe\u786e\u7684\u6a21\u578b\u3002<\/li>\n<\/ul>\n<h3>\u4e0d\u540c\u5750\u6807\u7cfb\u4e0b\u7684\u7535\u573a\u8868\u793a<\/h3>\n<p>\u7535\u573a\u7684\u8868\u793a\u65b9\u5f0f\u4e5f\u4e0e\u6240\u9009\u62e9\u7684\u5750\u6807\u7cfb\u6709\u5173\u3002\u5728\u7b1b\u5361\u5c14\u5750\u6807\u7cfb\u4e0b\uff0c\u7535\u573a\u53ef\u4ee5\u7528\u4e09\u4e2a\u5206\u91cf(Ex, Ey, Ez)\u8868\u793a\uff1b\u800c\u5728\u67f1\u5750\u6807\u7cfb\u6216\u7403\u5750\u6807\u7cfb\u4e0b\uff0c\u7535\u573a\u7684\u8868\u793a\u65b9\u5f0f\u5219\u6709\u6240\u4e0d\u540c\u3002\u9009\u62e9\u5408\u9002\u7684\u5750\u6807\u7cfb\u53ef\u4ee5\u7b80\u5316\u8ba1\u7b97\uff0c\u63d0\u9ad8\u6548\u7387\u3002  \u4f8b\u5982\uff0c\u5bf9\u4e8e\u5706\u67f1\u5f62\u538b\u7535\u9676\u74f7\uff0c\u4f7f\u7528\u67f1\u5750\u6807\u7cfb\u8fdb\u884c\u5206\u6790\u66f4\u4e3a\u65b9\u4fbf\u3002<\/p>\n<h3>\u7ed3\u8bba<\/h3>\n<p>\u51c6\u786e\u5b9a\u4e49\u538b\u7535\u9676\u74f7\u4e2d\u7684\u7535\u573a\u5bf9\u4e8e\u7406\u89e3\u548c\u5e94\u7528\u538b\u7535\u6548\u5e94\u81f3\u5173\u91cd\u8981\u3002  \u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\uff0c\u8003\u8651\u81ea\u53d1\u6781\u5316\u3001\u5e94\u529b\u7b49\u56e0\u7d20\u7684\u5f71\u54cd\uff0c\u5e76\u9009\u62e9\u5408\u9002\u7684\u6d4b\u91cf\u65b9\u6cd5\u548c\u5750\u6807\u7cfb\u6765\u63cf\u8ff0\u7535\u573a\u3002  \u5bf9\u7535\u573a\u7684\u6df1\u5165\u7406\u89e3\u662f\u8bbe\u8ba1\u9ad8\u6027\u80fd\u538b\u7535\u5668\u4ef6\u7684\u5173\u952e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u538b\u7535\u9676\u74f7\u4e2d\u7535\u573a\u7684\u5b9a\u4e49\u662f\u4e00\u4e2a\u770b\u4f3c\u7b80\u5355\u5374\u5305\u542b\u8bf8\u591a\u7ec6\u8282\u7684\u95ee\u9898\u3002\u5b83\u4e0d\u4ec5\u5173\u4e4e\u5bf9\u538b\u7535\u6548\u5e94\u7684\u7406\u89e3\uff0c\u4e5f\u76f4\u63a5\u5f71\u54cd\u5230\u538b\u7535\u5668\u4ef6\u7684\u8bbe\u8ba1<\/p>\n","protected":false},"author":1,"featured_media":5010,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6413],"tags":[],"class_list":["post-53866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","prodpage-classic"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/posts\/53866","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/comments?post=53866"}],"version-history":[{"count":0,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/posts\/53866\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/media\/5010"}],"wp:attachment":[{"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/media?parent=53866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/categories?post=53866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bjultrasonic.com\/zh-hans\/wp-json\/wp\/v2\/tags?post=53866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}