The encoder and resolver are commonly used rotor angle position sensors for controlling permanent magnet synchronous motors (PMSMs). However, they require significant axial space. This issue can be ...

The Swiss motion control specialist maxon has developed a speed measurement method for brushless DC (BLDC) motors that enhances control precision without needing an encoder. The method is based on an ...

Discover maxon’s breakthrough in BLDC motor control using Hall sensors—precision without encoders.

This paper shows a novel result of loop shaping for a 2-inertia system. The 2-inertia system has a motor-side encoder and a load-side encoder. A disturbance observer and a 3-dof controller are ...