H - Electricity – 02 – K
Patent
H - Electricity
02
K
310/57, 310/63
H02K 37/00 (2006.01) H02K 41/00 (2006.01) H02K 41/03 (2006.01)
Patent
CA 1093134
A B S T R A C T In an electromagnetic driving device, such as a linear or rotary drive motor, the polarization of the poles of at least one of two relatively movable parts is controlled. In order to provide a wide variability of speed and of performance range combined with a simple structure of the device, the electromagnetic poles of one part are simultaneously changeable in polarity. The current input of each electromagnetic pole of the one part is controlled such that a polarity change to the same polarity as in a cooperating pole of constant polarity of the other part takes place at the very instant at which the cooperating pole comes to a position opposite to the pole to be changed. A polarity change to a polarity opposite to the polarity of the cooperating poles of constant polarity of the other part takes place, in dependence of whether the succeeding poles of each pole group all have the same or alternately opposite polarity at each moment, at the very instant at which the pole of constant polarity which moves towards the electromagnetic pole to be changed is positioned at a distance from the pole to be changed, The advance in the art is in that the motor of the present invention provides a wide range of speed and performance control combined with a simple structure and economical production of the motor.
278148
Gowling Lafleur Henderson Llp
Kling Alberto
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