Original Publication Date: 1981-Mar-01
Included in the Prior Art Database: 2005-Feb-11
A low-cost star-shaped linear actuator for DASD (direct-access storage device) applications includes a plurality of printed circuit coils and magnetic gaps where the coil boards also provide a symmetrical rigid moving mass for improved dynamic performance. The plurality of coils provides a variety of connection combinations to tailor overall coil impedance and power requirements. The plurality of magnetic gaps tend to average the flux-fringing effects for improved force constant linearity.