Apparatus and a method for controlling an electric vehicle

B - Operations – Transporting – 60 – L

Patent

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Details

B60L 3/00 (2006.01) B60L 11/18 (2006.01)

Patent

CA 2348076

Control apparatus for an electric vehicle is described, the control apparatus comprising input means operable to generate a first signal indicative of a component of a desired motion of the vehicle and a second signal independently indicative of said component; an electric motor arranged to drive a wheel of the vehicle; a controller arranged to control the motor according to said first signal; and means for generating a signal indicative of a voltage across windings of the motor, the controller further including: means for calculating a quantity indicative of a nominal expected voltage across said windings according to said second signal; means for comparing said voltage with said expected voltage; and means for generating an error signal in response to said voltage and expected voltage differing by more than a predetermined amount. A corresponding method of controlling an electric vehicle is also described.

L'invention concerne un appareil de commande pour un véhicule électrique, comportant un moyen d'entrée conçu pour générer un premier signal indiquant une composante d'un mouvement voulu du véhicule et un deuxième signal indiquant séparément ladite composante; un moteur électrique conçu pour entraîner une roue du véhicule; un organe de commande conçu pour commander le moteur en fonction dudit premier signal; et des moyens pour générer un signal indiquant une tension aux bornes des enroulements du moteur, organe de commande comprenant: des moyens pour calculer une quantité indiquant une tension nominale prévue aux bornes des enroulements en fonction dudit deuxième signal; des moyens pour comparer ladite tension à ladite tension prévue; et des moyens pour générer un signal d'erreur en réponse à une différence entre ladite tension et la tension prévue, supérieure à une valeur prédéterminée. Un procédé correspondant de commande d'un véhicule électrique est également décrit.

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