Light aircraft electric motor DM0620

two-phase stepper

Stepper motors can perform demanding positioning tasks with particularly high accuracy. They accelerate very quickly and reach their full power almost without delay. In addition, they hold their position even when the power supply is switched off and can be controlled precisely without an encoder. FAULHABER offers a uniquely broad range of different stepper motors in numerous sizes. With stepper motors, the rotor moves around its circular path in multiple individual steps. By switching the stator windings on and off in a targeted manner, it can be moved into specific positions. This mode of operation differentiates it in principle from conventional electric motors with continuous rotation. When the power supply is switched off, the rotor remains in the most recent step position and its magnets provide a currentless static torque. This is particularly advantageous in many battery-driven applications. As the motor controller counts the steps completed, it also performs the function of an encoder. In general, an additional encoder is not required for operation. How are FAULHABER stepper motors designed? The stepper motors from FAULHABER are all two-phase devices and are designed as permanent or disc magnet motors. In the latter case, up to 25 pole pairs are arranged like pizza slices on the disc magnet of the rotor. The windings of the one- or two-piece stator are positioned perpendicular to the disc magnet. In permanent magnet motors, the rotor consists of a plastic sleeve that contains multiple small permanent magnets. The windings are housed in a two-piece stator. The rotor runs between the stator halves.