Abstract: A motor drive system configured to detect and prevent undesired movement of an item that is configured to be driven by the motor drive system. The motor drive system having: an electronic control unit operatively coupled to a rotor of the motor drive system, the electronic control unit being configured to detect undesired rotation of a shaft of the rotor, wherein the undesired rotation of the shaft is not caused by a force applied by the rotor; and wherein the electronic control unit of the motor drive system is configured to short windings of the motor drive system after a predetermined amount of undesired rotation of the shaft is detected by the electronic control unit such that further rotation of the rotor is prevented.

Abstract: A motor drive system configured to detect and prevent undesired movement of an item that is configured to be driven by the motor drive system. The motor drive system having: an electronic control unit operatively coupled to a rotor of the motor drive system, the electronic control unit being configured to detect undesired rotation of a shaft of the rotor, wherein the undesired rotation of the shaft is not caused by a force applied by the rotor; and wherein the electronic control unit of the motor drive system is configured to short windings of the motor drive system after a predetermined amount of undesired rotation of the shaft is detected by the electronic control unit such that further rotation of the rotor is prevented.

Abstract: The invention provides a system comprising an antitheft mechanism (20) comprising a housing (22) in which a member (24, 26, 38) for manually controlling the starting of the vehicle engine and the locking of the steering can move axially (26, 38) between a pulled position in which it locks the steering and a pushed position in which it unlocks the steering, is mounted so that it can rotate (24, 26, 38) between an angular position of rest and an angular position of use, and is connected in terms of rotation to a cam (132) for controlling the latch bolt (36, 122), wherein the antitheft system comprises an electromagnet (30) for immobilizing the control member (24, 26, 38) in terms of rotation with respect to the housing (22, 28), the release of which is controlled when an encoded antitheft signal is supplied by the identification unit to an electronic circuit that controls the immobilizing member and a switch (32, 70) which triggers an interrogation and identification step, which is carried by the housing (22, 2