A method for real time calculating of the rate of fuel saving based on hidden vehicle model prediction
A vehicle model and real-time calculation technology, applied in the field of vehicle information, can solve the problems of lack of differences, prove the role of the control system's fuel-saving effect, etc., and achieve the effect of reducing errors
Active Publication Date: 2019-09-13
JILIN UNIV
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[0007] The above invention patents all provide an effective method for calculating vehicle fuel consumption, but when calculating the fuel saving rate of a control system, the method of setting the reference fuel consumption as a constant value is often used, which lacks two methods for the real vehicle test. Considering the differences in the traffic environment conditions of the comparison system, it is impossible to accurately and objectively prove the effect of the control system on the fuel-saving effect without the influence of the external environment.
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[0069] On the premise of not changing the system software architecture, the present invention proposes a real-time calculation and comparison system of vehicle fuel consumption using a hidden vehicle model. System principle such as figure 1 , when the real vehicle is operated under the control of the optimization algorithm system, the fuel consumption of the optimization algorithm system is calculated from the engine speed and torque interpolation of the real vehicle, and the fuel consumption is updated every 1km and is not cleared. At the same time, a virtual vehicle model controlled by a baseline comparison algorithm is also running in the controller. Now that the virtual vehicle model is adopted, the problem of model error becomes unavoidable. In order to solve this problem, inspired by the principle of model predictive control, when the following target changes, the virtual vehicle model parameters and the parameters of the vehicle ahead are used to reset the virtual vehi...
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The invention belongs to the technical field of vehicle information, and in particular relates to a method for real time calculating of the rate of fuel saving based on hidden vehicle model prediction. The calculation method comprises the following steps of: step 1: calculating the real vehicle fuel consumption of the control by an optimized cruise control system; step 2: calculating the fuel consumption of a reference cruise control system through a virtual hidden model, wherein a virtual hidden vehicle model parameter is reset by the actual vehicle data according to vehicle target switchingto reduce model errors as much as possible; and step 3, comparing the fuel consumption of the two systems calculated in steps 1 and 2 to obtain the rate of fuel saving. The invention adopts a hidden fuel consumption model method, so that the fuel consumption calculation result can better reflect the influence of traffic conditions on a cruise system, and the error of the fuel consumption comparison result can be reduced, thereby obtaining the real-time rate of fuel saving, and solving the real time fuel consumption calculation of existing cruise systems.
Description
technical field [0001] The invention belongs to the technical field of vehicle information, in particular to a real-time calculation method of fuel saving rate based on hidden vehicle model prediction. Background technique [0002] With the development of V2X communication technologies such as 5G, map information and surrounding environment information can be used for vehicle control, which makes it possible to achieve energy conservation and emission reduction goals through multi-level planning, optimization and control in the interconnected information environment of smart cities. Countries around the world have proposed national-level development plans for energy conservation and emission reduction under the intelligent network connection. [0003] In the era of intelligent network connection, making full use of big data information to achieve energy saving and emission reduction will become the key research and development direction of domestic and foreign auto companies...
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Login to View More IPC IPC(8): B60W30/14B60W40/076B60W50/00B60R16/023
CPCB60R16/0232B60W30/14B60W40/076B60W50/00B60W2050/0031Y02T10/84
Inventor 闫勇军高炳钊汪介瑜董世营孙呈祥陈虹
Owner JILIN UNIV