Control device for a motor vehicle

A method for controlling a control device for a motor vehicle, the control device comprising a touch surface disposed inside the motor vehicle that performs two or more functions inside the motor vehicle and detects a contact from a finger of a user inside the motor vehicle and a direction of movement of the finger on the touch surface, a haptic feedback actuator configured to generate a haptic feedback in response to the contact from the finger and the direction of movement of the finger on the touch surface, an audio feedback module configured to generates an audio feedback in response to the contact from the finger and the direction of movement of the finger on the touch surface, a processor configured to drive the haptic feedback actuator and the audio feedback module to generate the haptic feedback pattern and the audio feedback pattern, wherein at least one parameter of the haptic feedback pattern and the audio feedback pattern vary with the direction of movement of the finger on the touch surface, the method comprising:

• detecting, by the touch surface, the contact from the finger and detecting the direction of movement of the finger on the touch surface;
• driving, by the processor, the haptic feedback actuator and the audio feedback module to generate the haptic feedback pattern and the audio feedback pattern;
• generating, by the haptic feedback actuator, the haptic feedback pattern in response to the contact from the finger and the direction of movement of the finger on the touch surface, the haptic feedback pattern being a vibration sequence of the touch surface generated based on a contact of the finger on the touch screen and a displacement of the finger from a first zone of contact with respect to a second zone of contact on the touch screen;
• generating, by the audio feedback module, the audio feedback pattern in response to the contact from the finger and the direction of movement of the finger on the touch surface, the audio feedback pattern being a sound sequence from the touch surface generated based on a pressure depression on the contact of the finger on the touch screen and the displacement of the finger from the first zone of contact with respect to the second zone of contact on the touch screen;
• wherein a parameter of the haptic feedback pattern and a parameter of the audio feedback pattern vary with the direction of movement of the finger on the touch surface,
• wherein the haptic feedback actuator is based on voice coil technology and comprises a fixed part and a part that is translationally mobile in an air gap of the fixed part between a first position and a second position, parallel to a longitudinal axis of the mobile part, and
• wherein the airgap has a length of 200 μm.