Linear DC Brushless Motor
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
The usual method of driving printer carriages, x-y plotters, and linear robotic members is to couple a rotary motor to the driven member by a lead screw or belt-pully arrangement which transforms the rotary motion into linear motion. These linkages can be avoided if a linear motor replaces the rotary motor, reducing the cost, weight, backlash, and dynamic complexity, such as belt spring. Linear motors have been known for a long time, but the emphasis has been in the transportation field where the linear induction machine appears to be the most practical. For the kind of mechanisms noted above which have relatively short runs, attaching power and control wires to the moving members is quite possible.