{"version":"1.0","provider_name":"C.I. TAKIRON Corporation. Micro motor product site.","provider_url":"https:\/\/cik-ele.com\/en\/","author_name":"\u897f\u5c71","author_url":"https:\/\/cik-ele.com\/en\/author\/nishiyama\/","title":"METHODS FOR CALCULATING MOTOR ROTATIONAL SPEED AND MOTOR CONTROL TECHNOLOGIES\uff5cC.I. TAKIRON Corporation. Micro motor product site.","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"LgkxR0q6Vq\"><a href=\"https:\/\/cik-ele.com\/en\/column\/rotational-speed\/\">METHODS FOR CALCULATING MOTOR ROTATIONAL SPEED AND MOTOR CONTROL TECHNOLOGIES<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/cik-ele.com\/en\/column\/rotational-speed\/embed\/#?secret=LgkxR0q6Vq\" width=\"600\" height=\"338\" title=\"&#8220;METHODS FOR CALCULATING MOTOR ROTATIONAL SPEED AND MOTOR CONTROL TECHNOLOGIES&#8221; &#8212; C.I. TAKIRON Corporation. Micro motor product site.\" data-secret=\"LgkxR0q6Vq\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/cik-ele.com\/wp-includes\/js\/wp-embed.min.js\n\/* ]]> *\/\n<\/script>\n","thumbnail_url":"https:\/\/cik-ele.com\/wp-content\/uploads\/2026\/06\/457cca0bcf8283c28766857c20fe1457-1.jpg","thumbnail_width":1920,"thumbnail_height":1280,"description":"The ability to accurately measure and control a motor\u2019s rotational speed is critical, as it directly impacts equipment performance and stable operation (required specifications). \u201cI want to know the formula for calculating rotational speed.\u201d \u201cI want to understand how voltage and torque affect rotational speed\u201d \u201cI want to explore methods for achieving precise speed control\u201d To address these technical challenges, this article provides a technically grounded explanation\u2014ranging from the basic calculation formula for DC motor rotational speed to the factors affecting rotational speed, how to interpret T-N characteristics (torque characteristics) and how to use PWM control and feedback control for practical speed control. We provide information that will be useful to engineers in fields where reducing speed fluctuations and maintaining stable speed are critical, such as medical equipment and optical equipment."}