1.0C.I. TAKIRON Corporation. Micro motor product site.https://cik-ele.com/en/西山https://cik-ele.com/en/author/nishiyama/METHODS FOR CALCULATING MOTOR ROTATIONAL SPEED AND MOTOR CONTROL TECHNOLOGIES｜C.I. TAKIRON Corporation. Micro motor product site.rich600338<blockquote class="wp-embedded-content" data-secret="g4ifQCdL6L"><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=g4ifQCdL6L" width="600" height="338" title="“METHODS FOR CALCULATING MOTOR ROTATIONAL SPEED AND MOTOR CONTROL TECHNOLOGIES” — C.I. TAKIRON Corporation. Micro motor product site." data-secret="g4ifQCdL6L" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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https://cik-ele.com/wp-content/uploads/2026/06/457cca0bcf8283c28766857c20fe1457-1.jpg19201280The ability to accurately measure and control a motor’s rotational speed is critical, as it directly impacts equipment performance and stable operation (required specifications). “I want to know the formula for calculating rotational speed.” “I want to understand how voltage and torque affect rotational speed” “I want to explore methods for achieving precise speed control” To address these technical challenges, this article provides a technically grounded explanation—ranging 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.