Abstract:
A method and apparatus for providing an advised driving speed to a driver of a vehicle travelling on a road network is disclosed. The method comprises determining an advised driving speed of a vehicle for a portion of the road network currently being traversed, determining a current speed of the vehicle on the portion of the road network, and determining a speed limit and/or an expected driving speed for the portion of the road network. An indication of the advised driving speed is then provided to the driver of the vehicle when: (i) the current speed of the vehicle is greater than a first threshold value based on the advised driving speed; and (ii) the speed limit and/or the expected driving speed is greater than a second threshold value. A method and apparatus is also disclosed for determining a score indicative of the compliance of a driver of a vehicle to an advised driving speed during a journey on a road network.
Abstract:
A method and apparatus for providing an indication to a driver of a geared vehicle that the vehicle is not in an optimal gear is disclosed. The method comprises determining a current gear of the vehicle and determining a current speed of a drive unit of the vehicle. An indication is then provided to the driver of the vehicle that the vehicle is not in an optimal gear when: (i) the determined current speed of the drive unit is greater than a predetermined threshold; and (ii) the determined current gear of the vehicle is less than a maximum gear of the vehicle. A method and apparatus is also disclosed for determining a score indicative of the amount of time during a journey on a road network that a geared vehicle is driven in an optimal gear.
Abstract:
Method to control the acceleration of a motor vehicle from a current speed, wherein said motor vehicle comprises an accelerator pedal system (3, 7, 8, 9, 10) able to generate on the accelerator pedal (3) an added reaction force (R add ) when the depression of the accelerator pedal (3) reaches a given depression level. The method comprises the steps of : (a) measuring the current vehicle speed; (b) determining a target speed of the motor vehicle in function at least of the current vehicle speed or determining from the current vehicle speed a maximum acceleration rate; (c) determining at least one threshold depression level (α i ) of the accelerator pedal (3) that corresponds to the stabilization of the vehicle speed at the target speed or that corresponds to maximum acceleration rate; (d) generating an added reaction force (R add ) on the accelerator pedal (3) if the depression of the accelerator pedal (3) reaches or is about to reach the threshold depression level (α i ); wherein at least steps a), b), and c) are automatically repeated as vehicle speed increases.
Abstract:
Systems and methods use cameras to provide autonomous navigation features. In one implementation, a lane ending detection system is provided for a vehicle. One or more processing devices associated with the system receive at least one image via a data interface. The device(s) extract lane ending information from the road sign(s) included in the image data and determine, based on at least one indicator of position of the vehicle, a distance from the vehicle to one or more lane constraints associated with the current lane. The processing device(s) determine, based on the lane ending information and the vehicle position, whether a current lane in which the vehicle is traveling is ending. Further, the system may cause the vehicle to change lanes if the lane in which the vehicle is traveling is ending.
Abstract:
Bei einem Verfahren zum Regeln der Geschwindigkeit eines Kraftfahrzeugs wird ein aktueller Kraftstoffverbrauch FC act des Kraftfahrzeugs ermittelt und die Geschwindigkeit des Kraftfahrzeugs durch Eingriff in eine Motorsteuerung zur Einhaltung eines vorgebbaren Kraftstoffverbrauchssollwerts FC soll geregelt, wobei eine Minimalgeschwindigkeit v min vorgebbar ist, die mindestens gehalten wird. Die Erfindung betrifft auch eine Vorrichtung zum Regeln der Geschwindigkeit eines Kraftfahrzeugs
Abstract:
The invention relates to a method for determining a reference value for a control system of a vehicle which comprises: - determining a set speed for the vehicle; - determining a horizon for the intended itinerary which is made up of route segments; - effecting the following during each of a number of simulation cycles S j each comprising a number N of simulation steps conducted at a predetermined frequency f : - making a first prediction of the vehicle's speed v pred_cc along the horizon with a conventional cruise control; - comparing in a first comparison the predicted vehicle speed v pred_cc with V|im1 and V|im2, which are used to define a motor torque T to be used in a subsequent simulation cycle s j+1 ; - making a second prediction of the vehicles speed v pred_Tnew along the horizon when the vehicle's engine torque T is a value which depends on the result of said comparison in the latest preceding simulation cycle S j-1 - comparing in a second comparison the predicted vehicle speed v pred_Tnew With v min , and V max1 which demarcate a range within which the vehicle's speed is intended to be - determining a reference value on the basis of at least one of said second comparison and the second predicted vehicle speed v pred_Tnew in that simulation cycle S j and; - controlling the vehicle according to said reference value.
Abstract:
Verfahren zum Betrieb eines längsführenden Fahrerassistenzsystems (2) eines Kraftfahrzeugs (1), welches in einem reinen Folgebetrieb die Geschwindigkeit des Kraftfahrzeugs (1) so regelt, dass ein Abstand zu einem voranfahrenden Fahrzeug (14) als Regelobjekt konstant bleibt, und welches in einem Freifahrbetrieb auf eine Wunschgeschwindigkeit regelt, wobei eine Ausscherwahrscheinlichkeit des voranfahrenden Fahrzeugs (14) in Abhängigkeit von Sensordaten wenigstens eines Umfeldsensors ermittelt wird, wobei die Regelung auf das voranfahrende Fahrzeug (14) und/oder die Regelung im Freifahrbetrieb unmittelbar nach der Beendigung des Folgebetriebs in Abhängigkeit von der Ausscherwahrscheinlichkeit modifiziert oder beendet wird.
Abstract:
A vehicle operating condition profile can be determined over a given route while also considering imposed constraints such as deviation from time targets, deviation from maximum governed speed limits, etc. Given current vehicle speed, engine state and transmission state, the present disclosure optimally manages the engine map and transmission to provide a recommended vehicle operating condition that optimizes fuel consumption in transitioning from one vehicle state to a target state. Exemplary embodiments provide for offline and online optimizations relative to fuel consumption. The benefit is increased freight efficiency in transporting cargo from source to destination by minimizing fuel consumption and maintaining drivability.
Abstract:
A vehicle control system includes a controller (20) that is provided in a host vehicle (1) and that controls an acceleration of the host vehicle (1) with the smallest acceleration, from among a first required acceleration that is required based on information related to a running state of a vehicle on a road and a second required acceleration that is required based on a relative relationship between the host vehicle (1) and at least one of a leading vehicle traveling right in front of the host vehicle (1) and an obstacle ahead of the host vehicle (1), as a target acceleration.