Brushless electric motor for managing and actuating aerators in car, has space inter-magnet defined by angle formed between adjacent side faces of magnets, where angle from space inter-magnet is calculated for measuring thickness of air gap

摘要

The motor has a rotor (6) including two ferrite magnets (8), where rotation of the rotor is driven by interaction between a magnetic field turning of coils (4) and a radial magnetic field of magnets. A space inter-magnet is defined by an angle (alpha) formed between adjacent side faces (26) of the magnets. The angle from the space inter-magnet is calculated for measuring thickness of a preset air-gap so as to minimize the undulations of couple generated by the rotation of the rotor by preserving the induction generated by the magnets in an air-gap (23) at a preset value.