Abstract
A vibratory linear motor system employs a comb-shaped electromagnet to excite transverse mechanical oscillations of a relatively thin, spring-like beam. The electromagnet establishes an approximate standing wave on the beam for which brakes mounted on either side of the beam provide independently established boundary conditions and produce rectified linear motion thereof. The brakes may be electromagnetically, magnetostrictively, or piezoelectrically actuated. An electronic control provides modulated currents to the exciter electromagnet and the brakes in order to control the rectified linear motion of the beam.
U.S. Patent and Trademark Office Description
PTOInventor(s)
Roger Brockett, Gerald Kliman, Donald Jones, Russell TompkinsDate Issued
02/19/1991Patent No.
4,994,698Top