Vehicle speed prediction method, device, vehicle control device and storage medium
A prediction method and position prediction technology, which is applied in the automotive field, can solve problems such as low prediction accuracy, high charging and discharging power of power batteries, and large charging and discharging losses, so as to improve calculation speed, accuracy, weighting coefficient and target prediction Speed Accurate Effect
Active Publication Date: 2020-09-29
TSINGHUA UNIV
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Problems solved by technology
The disadvantage of this mode is: the charging and discharging power of the power battery is relatively high, and the charging and discharging loss is relatively large
This method has the problem of low prediction accuracy
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[0051]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0052] See figure 1 , the speed prediction method provided by this application is used to predict the speed of the vehicle, which can be applied to such as figure 1 In the vehicle control system shown. The vehicle control system includes a vehicle control device 102 , a positioning device 104 , an information acquisition device 106 and a data storage device 108 . Wherein, both the positioning device 104 and the information obtaining device 106 are in communication connection with the vehicle control device 102 . The vehicle control device 102 , the positioning device 104...
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The invention relates to a vehicle speed prediction method, a vehicle speed prediction device, a vehicle control device and a storage medium. The method comprises the following steps: obtaining a current position and a current vehicle speed of a vehicle, congestion condition information of a current road and predicted duration; searching a vehicle speed corresponding to the current position basedon a pre-established typical working condition according to the current position in order to obtain a standard vehicle speed; calculating a difference value between the standard vehicle speed and thecurrent vehicle speed to obtain a vehicle speed difference; inputting the vehicle speed difference, the congestion condition information, the current vehicle speed and the predicted duration into a pre-trained weighting coefficient prediction model to obtain a weighting coefficient; predicating the vehicle speed of the vehicle after the predicted duration according to the current position, the current vehicle speed and the predicted duration in order to obtain a preliminary predicted vehicle speed; and correcting the preliminary predicted vehicle speed through the weighting coefficient to obtain a target predicted vehicle speed. The vehicle speed predicted by the vehicle speed prediction method provided by the invention is high in accuracy.
Description
technical field [0001] The present application relates to the technical field of automobiles, in particular to a vehicle speed prediction method, device, vehicle control device and storage medium. Background technique [0002] In the research of intelligent vehicles and automobile energy saving, vehicle speed prediction is widely used in path planning and navigation, safety assisted driving and predictive control strategies of hybrid vehicles, so as to improve the economy and power of vehicles. Taking the application of vehicle speed prediction to fuel cell vehicles as an example, fuel cell vehicles have two power sources: fuel cell system and power battery system. Generally, fuel cell vehicles adopt a matching mode of a large-capacity power battery system and a low-power fuel cell system, relying on the charging and discharging of the power battery system to meet the dynamic power requirements of the vehicle, and providing the steady-state power of the vehicle through the f...
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IPC IPC(8): B60W40/105B60W50/00
CPCB60W40/105B60W50/0097B60W2520/10
Inventor 李建秋张健珲徐梁飞胡尊严欧阳明高
Owner TSINGHUA UNIV