Abstract: This invention teaches a control apparatus for electric drive vehicles comprising a low-voltage electric power source (1), a low-voltage inverter (3), a high-frequency transformer (4), a high-voltage inverter (5), a three-phase inverter (6) coupled to an electric motor (7), and a central processing unit (10) coupled to all the other components of the apparatus, means for detecting revolution speed and position of the axis of the motor being provided, and a method to manage the apparatus.

Abstract: Device for detecting the speed and the position of a rotating shaft (1), comprising an annular magnetic member (202) keyed onto said shaft (1) and means (113) for detecting the magnetic field of said magnetic member (202), characterized in that said magnetic member (202) comprises at least two symmetrical portions with mutually opposite polarity, said portions possessing sinusoidal field magnetization, and said detection means comprise at least one pair of sensors (113) for detecting the magnetic field which are similar to each other and electrically staggered at 90°, there being envisaged a processing unit (15) connected to said detection means (113) and able, by means of a suitable program, to retrieve the speed and position data of said rotating shaft from the data acquired by means of said detection means (113).