Servo-assisted transmission with contactless position sensors

摘要

A servo-assisted transmission (1) provided with: at least one servo-assisted clutch (6); a servo-assisted gearbox (4); a clutch servo-control (20) provided with an actuator (21) for driving the servo-assisted clutch (6); a gearbox servo-control (13) provided with at least one actuator (18; 19) for driving the servo-assisted gearbox (4); a housing box (26); and at least one position sensor (23; 24; 28) for detecting the position of a movable part (31) arranged inside the housing box (26); the position sensor (23; 24; 28) consists of: a permanent magnet (30), which is fixed onto the movable part (31), arranged within the housing box (26), and facing an internal surface of a separation wall (33) of non-magnetic material of the housing box (26) ; and a reader (32), which is adapted to read the orientation of the permanent magnet (30), arranged outside the housing box (26), and arranged facing the separation wall (33) of the housing box (26) so as to be close to the permanent magnet (30).