{"id":313,"date":"2024-06-04T07:53:38","date_gmt":"2024-06-04T07:53:38","guid":{"rendered":"https:\/\/luyenkim.com.vn\/?p=313"},"modified":"2024-06-04T07:54:54","modified_gmt":"2024-06-04T07:54:54","slug":"313","status":"publish","type":"post","link":"https:\/\/luyenkim.com.vn\/index.php\/2024\/06\/04\/313\/","title":{"rendered":"\u0110\u1ed8NG C\u01a0 BLDC L\u00c0 G\u00cc? T\u1ea0I SAO N\u00caN S\u1eec D\u1ee4NG \u0110\u1ed8NG C\u01a0 BLDC TRONG QU\u1ea0T?"},"content":{"rendered":"\n<h2 id=\"tiny-class-h2-1\" class=\"ftwp-heading\">\u0110\u1ed9ng c\u01a1 BLDC l\u00e0 g\u00ec?<\/h2>\n<p>\u0110\u1ed9ng c\u01a1 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u kh\u00f4ng ch\u1ed5i than (BLDC) l\u00e0 m\u1ed9t lo\u1ea1i \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n s\u1eed d\u1ee5ng nam ch\u00e2m \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra \u0111i\u1ec7n. C\u00e1c nam ch\u00e2m \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong r\u00f4to, quay xung quanh \u1edf m\u1ed9t v\u1ecb tr\u00ed c\u1ed1 \u0111\u1ecbnh tr\u00ean tr\u1ee5c c\u1ee7a n\u00f3. Khi \u0111i\u1ec1u n\u00e0y x\u1ea3y ra, n\u00f3 t\u1ea1o ra m\u1ed9t t\u1eeb tr\u01b0\u1eddng di chuy\u1ec3n qua l\u1ea1i qua c\u00e1c d\u00e2y \u0111\u01b0\u1ee3c g\u1eafn v\u00e0o m\u1ed7i c\u1ef1c c\u1ee7a nam ch\u00e2m. Hai c\u1ef1c n\u00e0y \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp sao cho c\u00e1c c\u1ef1c c\u1ee7a ch\u00fang kh\u00f4ng th\u1eb3ng h\u00e0ng v\u1edbi nhau t\u1ea1i b\u1ea5t k\u1ef3 \u0111i\u1ec3m n\u00e0o trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng; thay v\u00e0o \u0111\u00f3, ch\u00fang vu\u00f4ng g\u00f3c v\u1edbi nhau\u2014ch\u00fang \u0111\u01b0\u1ee3c \u2018si\u00eau m\u1edf r\u1ed9ng\u2019 nh\u01b0 v\u1ed1n c\u00f3\u2014v\u00e0 t\u1ea1o ra c\u00e1c d\u00f2ng \u0111i\u1ec7n d\u1ecdc theo ch\u00fang khi ch\u00fang quay qua nhau. N\u00f3 cho ph\u00e9p t\u1ea1o ra c\u00f4ng su\u1ea5t cao v\u00ec kh\u00f4ng c\u1ea7n ma s\u00e1t gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn nh\u01b0 \u1ed5 tr\u1ee5c ho\u1eb7c b\u00e1nh r\u0103ng, n\u1ebfu kh\u00f4ng s\u1ebd l\u00e0m ch\u1eadm t\u1ed1c \u0111\u1ed9 quay v\u00e0 gi\u1ea3m hi\u1ec7u su\u1ea5t.<\/p>\n\t<section class=\"section\" id=\"section_1593861143\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n\t<div class=\"img has-hover x md-x lg-x y md-y lg-y\" id=\"image_969937823\">\n\t\t\t\t\t\t\t\t<div class=\"img-inner dark\" >\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"420\" height=\"380\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/06\/dong-co-bldc-hoat-dong.gif\" class=\"attachment-large size-large\" alt=\"\" \/>\t\t\t\t\t\t\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\n<style>\n#image_969937823 {\n  width: 91%;\n}\n<\/style>\n\t<\/div>\n\t\n\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_1593861143 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\t<section class=\"section\" id=\"section_324567119\">\n\t\t<div class=\"bg section-bg fill bg-fill  bg-loaded\" >\n\n\t\t\t\n\t\t\t\n\t\t\t\n\n\t\t<\/div>\n\n\t\t\n\n\t\t<div class=\"section-content relative\">\n\t\t\t\n\n<h2 id=\"tiny-class-h2-2\" class=\"ftwp-heading\">T\u1ea1i sao qu\u1ea1t tr\u1ea7n s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 BLDC?<\/h2>\n<p>\u0110\u1ed9ng c\u01a1 BLDC s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 \u0111i\u1ec7n t\u1eed (ESC) \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng g\u1eedi \u0111\u1ebfn m\u1ed7i ph\u1ea7n \u1ee9ng. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ed1c \u0111\u1ed9 theo d\u00f5i nh\u1eefng thay \u0111\u1ed5i v\u1ec1 d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec7n \u00e1p, sau \u0111\u00f3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ea7u ra c\u1ee7a n\u00f3 cho ph\u00f9 h\u1ee3p. N\u00f3 cho ph\u00e9p n\u00f3 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ea7n s\u1ed1 th\u1ea5p h\u01a1n nhi\u1ec1u so v\u1edbi \u0111\u1ed9ng c\u01a1 DC truy\u1ec1n th\u1ed1ng\u2014k\u1ebft qu\u1ea3 l\u00e0 ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng \u0111\u1ec3 s\u1eed d\u1ee5ng trong qu\u1ea1t tr\u1ea7n v\u00ec ch\u00fang r\u1ea5t hi\u1ec7u qu\u1ea3 trong vi\u1ec7c truy\u1ec1n n\u0103ng l\u01b0\u1ee3ng xu\u1ed1ng tr\u1ee5c m\u00e0 kh\u00f4ng t\u1ea1o ra qu\u00e1 nhi\u1ec1u ti\u1ebfng \u1ed3n ho\u1eb7c \u0111\u1ed9 rung.<\/p>\n<h2 id=\"tiny-class-h2-3\" class=\"ftwp-heading\">L\u1ee3i \u00edch c\u1ee7a qu\u1ea1t s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 BLDC:<\/h2>\n<ol>\n<li>\u01afu \u0111i\u1ec3m c\u1ee7a \u0111\u1ed9ng c\u01a1 d\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u kh\u00f4ng ch\u1ed5i than (BLDC) l\u00e0 ch\u00fang ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng h\u01a1n. \u0110\u1ed9ng c\u01a1 BLDC s\u1eed d\u1ee5ng \u00edt \u0111i\u1ec7n n\u0103ng h\u01a1n so v\u1edbi \u0111\u1ed9ng c\u01a1 \u0111\u1ed1i l\u01b0u AC (D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u) v\u00e0 DC (D\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u) truy\u1ec1n th\u1ed1ng. Do \u0111\u00f3, n\u00f3 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3 khi ch\u1ea1y qu\u1ea1t tr\u1ea7n c\u1ee7a b\u1ea1n.<\/li>\n<li>M\u1ed9t \u01b0u \u0111i\u1ec3m kh\u00e1c c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng \u0111\u1ed9ng c\u01a1 BLDC trong qu\u1ea1t tr\u1ea7n l\u00e0 ch\u00fang ch\u1ea1y \u00eam h\u01a1n so v\u1edbi c\u00e1c thi\u1ebft b\u1ecb qu\u1ea1t AC (D\u00f2ng \u0111i\u1ec7n xoay chi\u1ec1u) v\u00e0 DC (D\u00f2ng \u0111i\u1ec7n m\u1ed9t chi\u1ec1u) truy\u1ec1n th\u1ed1ng. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 th\u01b0\u1edfng th\u1ee9c ch\u01b0\u01a1ng tr\u00ecnh ca nh\u1ea1c ho\u1eb7c ch\u01b0\u01a1ng tr\u00ecnh truy\u1ec1n h\u00ecnh y\u00eau th\u00edch m\u00e0 kh\u00f4ng ph\u1ea3i lo l\u1eafng v\u1ec1 \u00e2m thanh \u1ed3n \u00e0o c\u1ee7a qu\u1ea1t ho\u1eb7c b\u1ea1n c\u00f3 th\u1ec3 ng\u1ee7 su\u1ed1t \u0111\u00eam m\u00e0 kh\u00f4ng b\u1ecb th\u1ee9c gi\u1ea5c b\u1edfi ti\u1ebfng \u1ed3n l\u1edbn ho\u1eb7c rung \u0111\u1ed9ng do qu\u1ea1t g\u00e2y ra.<\/li>\n<li>\u0110\u1ed9ng c\u01a1 BLDC \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u00fap gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a qu\u1ea1t tr\u1ea7n v\u00e0 gi\u00fap l\u1eafp \u0111\u1eb7t ch\u00fang d\u1ec5 d\u00e0ng h\u01a1n \u1edf b\u1ea5t k\u1ef3 khu v\u1ef1c n\u00e0o trong nh\u00e0 ho\u1eb7c v\u0103n ph\u00f2ng c\u1ee7a b\u1ea1n.<\/li>\n<li>Ngo\u00e0i ra, v\u00ec ch\u00fang kh\u00f4ng c\u1ea7n b\u1ea3o d\u01b0\u1ee1ng nhi\u1ec1u so v\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 truy\u1ec1n th\u1ed1ng n\u00ean ch\u00fang c\u0169ng r\u1ea5t b\u1ec1n\u2014c\u00f3 ngh\u0129a l\u00e0 chi ph\u00ed b\u1ea3o d\u01b0\u1ee1ng th\u01b0\u1eddng xuy\u00ean \u00edt h\u01a1n theo th\u1eddi gian.<\/li>\n<\/ol>\n<h2 id=\"tiny-class-h2-3\" class=\"ftwp-heading\">Cty TNHH Luy\u1ec7n Kim cung c\u1ea5p c\u00e1c lo\u1ea1i qu\u1ea1t tr\u00f2n, qu\u1ea1t tr\u1ea7n \u0111\u01b0\u1eddng k\u00ednh l\u1edbn<\/h2>\n<p>V\u1edbi \u01b0u \u0111i\u1ec3m c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC, Cty tnhh Luy\u1ec7n Kim \u0111\u00e3 \u0111i \u0111\u1ea7u \u1ee9ng d\u1ee5ng v\u00e0o c\u00e1c s\u1ea3n ph\u1ea9m qu\u1ea1t c\u1ee7a ch\u00fang t\u00f4i. T\u1ea1o n\u00ean th\u01b0\u01a1ng hi\u1ec7u qu\u1ea1t <strong>FLK <\/strong>mang t\u1edbi cho kh\u00e1ch h\u00e0ng s\u1ea3n ph\u1ea9m c\u00f3 chi ph\u00ed h\u1ee3p l\u00fd, ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3 v\u00e0 ti\u1ebft ki\u1ec7m. R\u1ea5t mong \u0111\u01b0\u1ee3c s\u1ef1 \u1ee7ng h\u1ed9 c\u1ee7a qu\u00fd kh\u00e1ch h\u00e0ng!<\/p>\n\n\t\t<\/div>\n\n\t\t\n<style>\n#section_324567119 {\n  padding-top: 30px;\n  padding-bottom: 30px;\n}\n<\/style>\n\t<\/section>\n\t\n\n  \n    <div id=\"gallery-1394560232\" class=\"row large-columns-2 medium-columns- small-columns- row-masonry\" data-packery-options='{\"itemSelector\": \".col\", \"gutter\": 0, \"presentageWidth\" : true}'>\n\n  <div class=\"gallery-col col\" >\n          <div class=\"col-inner\">\n            <a class=\"image-lightbox lightbox-gallery\" href=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-e1711419745785.jpg\" title=\"\">            <div class=\"box has-hover gallery-box box-normal\">\n              <div class=\"box-image\" >\n                <img loading=\"lazy\" decoding=\"async\" width=\"155\" height=\"300\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-155x300.jpg\" class=\"attachment-medium size-medium\" alt=\"\" ids=\"228,227,229,237,222\" style=\"normal\" lightbox_image_size=\"original\" type=\"masonry\" columns=\"2\" srcset=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-155x300.jpg 155w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-530x1024.jpg 530w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-600x1160.jpg 600w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-e1711419745785.jpg 466w\" sizes=\"(max-width: 155px) 100vw, 155px\" \/>                                                              <\/div>\n              <div class=\"box-text text-left\" >\n                 <p><\/p>\n              <\/div>\n            <\/div>\n            <\/a>          <\/div>\n         <\/div><div class=\"gallery-col col\" >\n          <div class=\"col-inner\">\n            <a class=\"image-lightbox lightbox-gallery\" href=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2.png\" title=\"\">            <div class=\"box has-hover gallery-box box-normal\">\n              <div class=\"box-image\" >\n                <img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"169\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2-300x169.png\" class=\"attachment-medium size-medium\" alt=\"\" ids=\"228,227,229,237,222\" style=\"normal\" lightbox_image_size=\"original\" type=\"masonry\" columns=\"2\" srcset=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2-300x169.png 300w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2-768x432.png 768w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2-600x337.png 600w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/5-2.png 1025w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>                                                              <\/div>\n              <div class=\"box-text text-left\" >\n                 <p><\/p>\n              <\/div>\n            <\/div>\n            <\/a>          <\/div>\n         <\/div><div class=\"gallery-col col\" >\n          <div class=\"col-inner\">\n            <a class=\"image-lightbox lightbox-gallery\" href=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/8-1-e1711419648803.jpg\" title=\"\">            <div class=\"box has-hover gallery-box box-normal\">\n              <div class=\"box-image\" >\n                <img loading=\"lazy\" decoding=\"async\" width=\"244\" height=\"300\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/8-1-e1711419648803-244x300.jpg\" class=\"attachment-medium size-medium\" alt=\"\" ids=\"228,227,229,237,222\" style=\"normal\" lightbox_image_size=\"original\" type=\"masonry\" columns=\"2\" srcset=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/8-1-e1711419648803-244x300.jpg 244w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/8-1-e1711419648803.jpg 522w\" sizes=\"(max-width: 244px) 100vw, 244px\" \/>                                                              <\/div>\n              <div class=\"box-text text-left\" >\n                 <p><\/p>\n              <\/div>\n            <\/div>\n            <\/a>          <\/div>\n         <\/div><div class=\"gallery-col col\" >\n          <div class=\"col-inner\">\n            <a class=\"image-lightbox lightbox-gallery\" href=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-scaled.jpeg\" title=\"\">            <div class=\"box has-hover gallery-box box-normal\">\n              <div class=\"box-image\" >\n                <img loading=\"lazy\" decoding=\"async\" width=\"225\" height=\"300\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-225x300.jpeg\" class=\"attachment-medium size-medium\" alt=\"\" ids=\"228,227,229,237,222\" style=\"normal\" lightbox_image_size=\"original\" type=\"masonry\" columns=\"2\" srcset=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-225x300.jpeg 225w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-768x1024.jpeg 768w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-1152x1536.jpeg 1152w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-1536x2048.jpeg 1536w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-600x800.jpeg 600w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/img_6770-scaled.jpeg 1920w\" sizes=\"(max-width: 225px) 100vw, 225px\" \/>                                                              <\/div>\n              <div class=\"box-text text-left\" >\n                 <p><\/p>\n              <\/div>\n            <\/div>\n            <\/a>          <\/div>\n         <\/div><div class=\"gallery-col col\" >\n          <div class=\"col-inner\">\n            <a class=\"image-lightbox lightbox-gallery\" href=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/kD3BYFdVRJ2YYKe-t2igsA.jpg_640xaf.jpg\" title=\"\">            <div class=\"box has-hover gallery-box box-normal\">\n              <div class=\"box-image\" >\n                <img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"200\" src=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/kD3BYFdVRJ2YYKe-t2igsA.jpg_640xaf-300x200.jpg\" class=\"attachment-medium size-medium\" alt=\"\" ids=\"228,227,229,237,222\" style=\"normal\" lightbox_image_size=\"original\" type=\"masonry\" columns=\"2\" srcset=\"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/kD3BYFdVRJ2YYKe-t2igsA.jpg_640xaf-300x200.jpg 300w, https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/kD3BYFdVRJ2YYKe-t2igsA.jpg_640xaf.jpg 600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>                                                              <\/div>\n              <div class=\"box-text text-left\" >\n                 <p><\/p>\n              <\/div>\n            <\/div>\n            <\/a>          <\/div>\n         <\/div><\/div>\n\n\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":228,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[1],"tags":[],"aioseo_notices":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/luyenkim.com.vn\/wp-content\/uploads\/2024\/03\/9-e1711419745785.jpg","_links":{"self":[{"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/313"}],"collection":[{"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=313"}],"version-history":[{"count":3,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/313\/revisions"}],"predecessor-version":[{"id":317,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/313\/revisions\/317"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/media\/228"}],"wp:attachment":[{"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/luyenkim.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}