Development of actuator for suspension control

✍ Scribed by Hirohiko Yoshida; Kenji Tange; Kenji Morikawa

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 770 KB
• Volume: 20
• Category: Article
• ISSN: 0389-4304
• DOI: 10.1016/s0389-4304(99)00048-x

✦ Synopsis

Resent suspension control systems adopt a stepping motor to achieve "ne 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 "nding the generating mechanism of detent torque of a stepping motor through three-dimensional magnetic "eld analysis using the "nite 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.