Method for adaptively regulating vehicle speed in a vehicle and speed regulating device
A speed adjustment and self-adaptive technology, applied in communication between vehicles and infrastructure, vehicle components, hybrid vehicles, etc., can solve problems such as inaccurate speed curves, calculation time, and calculation costs
Active Publication Date: 2021-06-01
ZF CV SYST EURO BV
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Problems solved by technology
[0006] The disadvantage here is that the entire route section to be traveled is calculated and therefore requires a great deal of computational effort and computing time in order to determine the speed profile of the predefined route section
Furthermore, the calculation is based on the current values before the start of the journey, so that the calculated speed profile changes when events occur during the journey, such as a new congestion or when a congestion is lifted or the vehicle is unexpectedly loaded or unloaded. Inaccurate
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[0059] according to figure 1 An embodiment of the present invention relates to a vehicle 100 , for example a commercial vehicle, having a controller 2 according to the invention for adaptively adjusting the vehicle speed vFzg, part of a speed regulation device 200 also known as cruise control. Controller 2 is in this case connected to a position determination system 3 , for example a global positioning system (GPS), which transmits the current position P of vehicle 100 to controller 2 . In addition, the current vehicle mass M of vehicle 100 is stored in controller 2 . The vehicle mass M can either be known in advance and stored, or it can be continuously determined using a mass determination system 4 , such as an axle load sensor or an electronic air suspension system, and can be transmitted to the controller 2 in order to be able, for example, when the load on the vehicle 100 changes. The current vehicle mass M is known at the time.
[0060]In addition, the current maximum ...
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The invention relates to a method for adaptively regulating the vehicle speed (vFzg) in a vehicle (100), in particular in a commercial vehicle with a speed regulating device (200), comprising the steps of: determining a reference speed (vRef) ; drive the engine (7) and / or brake (6) and / or speed changer (8) of the vehicle (100) through the speed regulating device (200) according to the vehicle target speed and / or the vehicle target deceleration, in order to make the current existing The vehicle speed (vFzg) of the vehicle is matched to the reference speed in a fuel-saving manner. According to the invention it is provided that the current driving motion of the vehicle (100) defined by the vehicle parameters (vFzg, M, A, B, P) of the driving dynamics on the basis of at least one calculation factor (W, X, Y, Z) Dynamic situation determination of vehicle target speed and / or vehicle target deceleration, wherein an external calculation unit (10) located outside the vehicle (100) takes into account vehicle parameters (vFzg, M, A, B, P) of the currently existing driving dynamics And provide at least one calculation coefficient (W, X, Y, Z) for the road section ahead according to the currently existing road condition information (I), wherein, with the vehicle parameters (vFzg, M, A, B, P) Determine the road segment ahead (D).
Description
technical field [0001] The invention relates to a method for adaptively regulating the vehicle speed in a vehicle, in particular a commercial vehicle having a speed regulating device, and to a speed regulating device for carrying out the method. Background technique [0002] In vehicles, in particular commercial vehicles, the regulation of the vehicle speed is known as a speed regulating device (GRA) or also as cruise control. They adjust the current vehicle speed to a reference speed preset by the driver without the need to operate the brake pedal. Such a system can be expanded by an adaptive regulation which additionally regulates the vehicle speed predictively and thus predetermines a fuel-saving driving style in order to reach this reference speed. The adaptive regulation for saving fuel takes into account, for example, road condition information, in particular the topography of the road section ahead. Such systems are known, for example, as powertrain predictive contr...
Claims
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IPC IPC(8): B60W10/06B60W10/184B60W30/14B60T8/32
CPCB60T8/323B60W10/06B60W10/184B60T2201/02B60T2210/36B60T2260/08B60W30/143B60W20/16B60W2552/15B60W2552/20B60W2530/10B60W2510/0657H04W4/44B60W2552/30B60W2555/60B60W2756/10B60T8/32B60W2510/18B60W2520/10B60W2520/28B60W2710/06B60W2710/18G01C21/3469
Inventor 卡斯藤·布罗伊尔艾哈迈德·拉加布
Owner ZF CV SYST EURO BV