A measure of the magnetic strength and orientation of a magnet or current-carrying loop. It determines the torque the object will experience when placed in an external magnetic field. In electrical machine design, calculating the magnetic moments of rotor coils or permanent magnets is fundamental to determining the torque output and efficiency of motors and generators.
We need to specify rare-earth magnets with a higher magnetic moment to hit the torque requirements for this servo motor.
Also heard as
- magnetic dipole moment
Related terms
Lorentz force
The combined electric and magnetic force exerted on a charged particle moving through an electromagnetic field.
Field magnet
The permanent magnet or electromagnet that provides the magnetic field in a motor or generator.
Spin magnetic moment
The intrinsic magnetic field generated by an elementary particle due to its quantum spin.