Automobile economical cruise control method and device

A cruise control and economical technology, applied in the field of economical cruise control of automobiles, can solve problems such as sudden changes in road adhesion rate, adverse effects on fuel economy and driving safety, etc., to eliminate optimization cycles, improve fuel economy and driving. Safety, the effect of ensuring driving safety

Active Publication Date: 2019-08-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

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Problems solved by technology

[0003] At present, for the speed optimization control of road information, information such as traffic lights, curves and road slopes are mainly considered at home and abroad, and the influence of changes in road conditions on the speed optimization process is not considered. Among them, the most typical road surface changes are caused by weather. Sudden changes in road adhesion rate, such as sudden rain and snow caused by road surface water, icing, etc. According to relevant statistics, the incidence of traffic acc...

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  • Automobile economical cruise control method and device
  • Automobile economical cruise control method and device
  • Automobile economical cruise control method and device

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Embodiment 1

[0060] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0061] A kind of automobile economical cruise control method proposed according to the embodiment of the present invention will be described below with reference to the accompanying drawings. First, the proposed automobile economical cruise control method will be described with reference to the accompanying drawings. consumption model and vehicle longitudinal dynamics model, and establish the vehicle speed optimization target, and solve the economical cruising speed; step 2, the driving computer estimates the road surface adhesion...

Embodiment 2

[0104] Such as Figure 7 As shown, the automobile economical cruise control device includes an information acquisition module, an optimization calculation module, and a real-time control module. The information acquisition module acquires the current position of the vehicle and the road gradient information for a limited distance, and acquires sensor and vehicle status information. The real-time control module, under the premise of ensuring driving safety, realizes the tracking control of the economical cruising speed, and is characterized in that the optimization calculation module performs the optimal calculation of the economical cruising speed according to the road slope information and the real-time road surface adhesion coefficient information, Estimate the road surface adhesion coefficient.

[0105] Further, the information acquisition module acquires the real-time position of the vehicle through the global positioning system (GPS) signal receiver, and carries out the i...

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Abstract

The invention discloses an automobile economical cruise control method and device. The control method comprises the following steps that a vehicle fuel consumption model and a vehicle longitudinal dynamics model are established, a vehicle speed optimization target is established, and the economical cruise speed is solved; pavement adhesion coefficient estimation is carried out on an electronic control unit, and a corresponding economical cruise speed is determined according to the estimated adhesion coefficient of the current pavement; the economical cruise speed corresponding to the discreteposition is converted into the economical cruise speed corresponding to the discrete time; and a model prediction controller is used for carrying out vehicle speed tracking control. According to the method, the travelling safety and the fuel economy can be considered under a complex pavement with the road gradient and pavement adhesion coefficient which keep changing all the time.

Description

technical field [0001] The invention relates to the control of economical cruising of automobiles under complex road conditions, and mainly considers the influence of road slope, road surface adhesion coefficient and their changes on vehicle fuel economy and driving safety. Background technique [0002] The Internet-based smart car is the current development trend of the automotive industry. It mainly obtains a large amount of vehicle and road information, and makes the optimal decision through various optimization algorithms to improve the driving quality of the vehicle. In recent years, a series of studies have been carried out at home and abroad to plan the economic speed of vehicles based on networked smart vehicles using environmental information. Scholars such as Matthew Barth of the University of California, Riverside, have studied the economic speed of vehicles when passing through traffic lights. Vehicles can plan their speed by obtaining the phase change informatio...

Claims

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Application Information

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IPC IPC(8): B60W40/105B60W50/00
CPCB60W40/105B60W50/00B60W2050/0034B60W2552/15B60W2552/40Y02T10/40
Inventor 周健豪何龙强赵万忠孙静薛四伍丁一宋廷伦
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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