G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
G01P3/42—Devices characterised by the use of electric or magnetic means
G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
G01P3/465—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage by using dynamo-electro tachometers or electric generator
Perfectionnements aux dispositifs pour mesurer les couples de freinage engendrés par les ralentisseurs électromagnétiques et aux dispositifs de réglage de ces couples
Rotor à aimants permanents doté d'une indication de sa position angulaire instantanée et machine magnéto-dynamique, comme un moteur sans collecteur, équipée d'un tel rotor