Consider the following DC motor parameters:
- Rotor resistance, $R\ [\Omega]$
- Motor constant, $k_t\ [\mathrm{V/rpm}]$
- Inertia, $I\ [\mathrm{kg\cdot m^2]}$
How do they scale with motor size? Do $R$ and $k_t$ depend on $I$?
Engineering Stack Exchange is a question and answer site for professionals and students of engineering. It only takes a minute to sign up.
Sign up to join this communityConsider the following DC motor parameters:
How do they scale with motor size? Do $R$ and $k_t$ depend on $I$?
Your described motor constant = peak voltage / rotational speed under no load. The latter decreases if your motor resistance increases. Inertia is obviously going to increase with a thicker shaft.