Kinetis Motor SuiteのトピックInertia SI Values https://community.nxp.com/t5/Kinetis-Motor-Suite/Inertia-SI-Values/m-p/789954#M555 <HTML><HEAD></HEAD><BODY><P><SPAN style="color: #000000; background-color: #ffffff; font-size: medium;">The inertia values are measured through Kinetis Motor Suite and given in unit: [A/(rpm/s)]. How do I convert these values to SI units? I want to calculate the rotational energy.</SPAN></P></BODY></HTML> Wed, 15 Aug 2018 08:55:59 GMT vegardlovvig 2018-08-15T08:55:59Z Inertia SI Values https://community.nxp.com/t5/Kinetis-Motor-Suite/Inertia-SI-Values/m-p/789954#M555 <HTML><HEAD></HEAD><BODY><P><SPAN style="color: #000000; background-color: #ffffff; font-size: medium;">The inertia values are measured through Kinetis Motor Suite and given in unit: [A/(rpm/s)]. How do I convert these values to SI units? I want to calculate the rotational energy.</SPAN></P></BODY></HTML> Wed, 15 Aug 2018 08:55:59 GMT https://community.nxp.com/t5/Kinetis-Motor-Suite/Inertia-SI-Values/m-p/789954#M555 vegardlovvig 2018-08-15T08:55:59Z Re: Inertia SI Values https://community.nxp.com/t5/Kinetis-Motor-Suite/Inertia-SI-Values/m-p/789955#M556 <HTML><HEAD></HEAD><BODY><P>Vegard,</P><P></P><P>In order to convert from A/(rpm/s) into SI you need to convert the electrical power (A) into mechanical power [N] using the torque equation:</P><P>Torque = 3/2 * Pp * Flux * Current</P><P>You also need to convert from rpm/s into elec rad / sec.</P><P></P><P>This can be slightly tricky and it is important that your units are correctly aligned.</P></BODY></HTML> Thu, 16 Aug 2018 00:41:54 GMT https://community.nxp.com/t5/Kinetis-Motor-Suite/Inertia-SI-Values/m-p/789955#M556 linestream-adam 2018-08-16T00:41:54Z