| Popis: |
Resent suspension control systems adopt a stepping motor to achieve fine control of the shock absorber, and an expensive rare earth magnet, which has high maximum energy product, is used in the stepping motor to keep the directed damping force of the shock absorber without electricity supply. To replace the magnet with a cheap ferrite magnet, we developed auxiliary poles technology by finding the generating mechanism of detent torque of a stepping motor through three-dimensional magnetic field analysis using the finite element method. This technology makes detent torque of the stepping motor increase and allows stepping motor for suspension control using a ferrite magnet instead of a rare earth magnet. |
