Vehicle speed determination method and device
A technology for determining the speed of a vehicle, which is applied to control devices, combustion engines, internal combustion piston engines, etc., and can solve problems such as poor fuel economy
Active Publication Date: 2021-05-18
SUZHOU ZHIJIA SCI & TECH CO LTD
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Problems solved by technology
[0005] The embodiment of the present application provides a method and device for determining the driving speed of a vehicle to solve the problem of poor fuel economy of vehicles in the prior art
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[0031] The principle and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, rather than to limit the scope of the present application in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.
[0032] Those skilled in the art know that the embodiments of the present application may be realized as a system, device, method or computer program product. Therefore, the disclosure of the present application can be specifically implemented in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.
[0033] The embodiment of the present application provides...
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The present application provides a method and device for determining the driving speed of a vehicle, wherein the method includes: obtaining road information of the target road, vehicle information of the target vehicle, and an engine fuel consumption characteristic map of the target vehicle; establishing the target vehicle according to the vehicle information and road information The power and resistance model of the power and resistance model; generate the target state equation according to the power and resistance model; generate the target cost function of the target vehicle according to the target state equation and the engine fuel consumption characteristic map; use the dynamic programming algorithm to determine the minimum value of the target cost function and the target corresponding to the minimum value control sequence, and determine the speed curve of the target vehicle on the target road according to the target control sequence and the target state equation. The above method can determine the appropriate driving speed curve of the target vehicle on the target road through the dynamic programming algorithm, thereby effectively reducing the fuel consumption of the vehicle, improving the fuel economy of the vehicle, and saving resources and costs.
Description
technical field [0001] The present application relates to the technical field of automatic driving, and in particular to a method and device for determining a vehicle driving speed. Background technique [0002] In the application scenarios of autonomous driving, self-driving taxis and autonomous logistics fleets need to operate around the clock, which requires high fuel economy of vehicles. When these self-driving vehicles are driving at high speeds, they usually run at the speed of traffic regulations, and only slow down to avoid obstacles when they encounter obstacles ahead. [0003] However, there are often differences in slopes and road surfaces at different locations on the expressway, resulting in different resistance effects on vehicles. In this case, if the vehicle has been driving on the expressway at a fixed speed, the fuel consumption of the vehicle is often relatively large, and there are problems of poor fuel economy and high driving cost. [0004] For the ab...
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IPC IPC(8): B60W10/06B60W10/18B60W40/105B60W50/00B60W60/00
CPCB60W10/06B60W10/18B60W40/105B60W2050/0043B60W2710/06B60W2710/18Y02T10/40
Inventor 李垚倪昆雷馥玥陈凯
Owner SUZHOU ZHIJIA SCI & TECH CO LTD