Ferrari S.p.a.

Roberto Betro′

Luca Poggio

Ugo Sitta

Andrea Benoit Abbiati

Giuseppe Agnello

Davide Ferrara

Paolo Faverzani

Samuele Arcangeli

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

Road vehicle comprising at least one electric motor; an acoustic system, which comprises at least one reproduction device, which generates a sound that can be associated with the electric motor; wherein the electric motor is mechanically connected to the reproduction device so as to be able to excite a resonant frequency thereof; and a control unit configured to control the electric motor so as to inject at least one sonority current or voltage, as an input, to the electric motor itself; wherein said at least one sonority current or voltage excites a frequency resulting in a vibration of said at least one reproduction device, which emits, due to the vibration, in the form of acoustic waves, a sound as a function of the injected sonority current or voltage.

Road vehicle equipped with a reproduction device for the realization of a sound that can be associated with an electric motor and related method

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

Roberto Betro′