Ferrari S.p.a.

Giuseppe Agnello

Luca Poggio

Ugo Sitta

Roberto Betro′

Davide Ferrara

Paolo Faverzani

Giovanni Lo Calzo

Andrea Benoit Abbiati

Roberto Betro'

The ageing of an electrical connection installed in a vehicle is evaluated by performing a series of samplings, spaced apart from one another at predefined time intervals, so as to determine a working temperature of the electrical connection for each sampling interval, and by determining a maximum duration of the electrical connection, assuming that the electrical connection was subjected, for its entire life, to the corresponding previously determined working temperature; then, an accumulated damage of the electrical connection is calculated, by overlapping a plurality of partial damage contributions, each of which is determined for each sampling interval, by dividing this sampling time interval by the corresponding maximum duration; finally, the accumulated damage is evaluated so as to identify any criticalities.

Method to assess the ageing of an electrical connection installed in a vehicle

An electric actuator apparatus comprising: an electric motor, comprising in turn a stator and a rotor, which is configured to rotate about an axis according to the power transmitted by the stator; a control unit configured to control the electric motor via a feedback control; a position detection system configured to provide the control unit with an angular position of the rotor; a reading portion, which is integral to the rotor and provided with an encoded surface on which a plurality of codes that can be associated with the angular position of the rotor are fixed; an optical or laser sensor element, which is arranged integral to the stator and so as to point toward the encoded surface.

Electric actuator apparatus equipped with position detection system and related road vehicle

A process for controlling an electric motor includes providing a functional relationship, which associates a first and a second quantity, indicative of a torque delivered by the electric motor and of the supply voltage respectively, with a speed parameter of the electric motor, determining a pair of values of the first and of the second quantity, determining a value of a third quantity indicative of an output speed of the electric motor, determining a value of the speed parameter corresponding to the pair of values determined through the functional relationship, determining a value of a fourth quantity indicative of a difference between the value of the speed parameter and the value of the third quantity, determining a target value for the first quantity as a function of the value of the fourth quantity, and controlling the electric motor according to the determined target value.

Process and an apparatus for controlling an electric motor

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Modena, Italy

Giuseppe Agnello