Working condition information acquisition method for vehicle global energy management control
A technology of working condition information and global energy, applied in the direction of the control device, etc., can solve problems such as the inability to identify the maximum adhesion coefficient of the road surface
Active Publication Date: 2020-04-10
JILIN UNIV
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Problems solved by technology
Due to the need to identify the slip rate in real time and predict it for a long time, it is impossible to identify the maximum adhesion coefficient of the road surface according to the slope of the μ-λ curve
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[0107] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0108] Such as figure 1 As shown, based on the general framework of "information layer-material layer-energy layer", the present invention provides a method for acquiring working condition information for global energy management and control of vehicles. According to the uncertainty of information that can be known in advance, the acquisition of working condition information can be realized from three levels:
[0109] 1. You can know the specific working condition information of the whole working condition in advance
[0110] At this time, the driving speed, road slope, slip rate and other working condition information under the whole working condition are completely known, which can be directly used in the global energy management control strategy to solve the global optima...
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The invention discloses a working condition information acquisition method for vehicle global energy management control. According to the uncertainty of information which can be known in advance, vehicle speed, slip rate and road gradient information can be obtained from three levels. When the running vehicle speed and road altitude of a vehicle under the whole working condition can be obtained, information of each working condition is obtained according to collected data; when the rule followed by the working condition information of the vehicle running under the whole working condition can be obtained, if a certain exact distribution function can be used for expressing the distribution rule, the information of each working condition is obtained according to the function, otherwise, a state transition probability matrix is constructed based on historical running data to obtain the information of each working condition; and when the constraint conditions applied to the running workingcondition information of the vehicle under the whole working condition can be obtained, the outer contour line of the vehicle is obtained according to the constraint conditions, and the information ofeach working condition is obtained based on the entropy maximum principle. Comprehensive and accurate working condition information can be provided for vehicle global energy management, and the possibility of globally optimizing real vehicle application is improved.
Description
technical field [0001] The present invention relates to the technical field of information acquisition, and more specifically, the present invention relates to a method for acquiring working condition information for vehicle global energy management and control. Background technique [0002] For the energy management system of new energy vehicles, the control strategy based on the global optimization algorithm can realize the optimal distribution of energy among multiple power sources, but the realization of the control strategy needs to obtain the entire working condition information in advance. Due to the uncertainty of working condition information that can be obtained in advance, how to analyze the working condition information that can be obtained in advance under different circumstances is the primary problem at the information level. [0003] For vehicles with multiple power sources: [0004] P req =P E +P M [0005] P req = M req · ω req [0006] m req =F ...
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IPC IPC(8): B60W40/105B60W40/10B60W40/076B60W50/00
CPCB60W40/076B60W40/10B60W40/105B60W50/00B60W2050/0028B60W2050/0034B60W2520/10
Inventor 许楠孔岩赵迪初亮杨志华睢岩
Owner JILIN UNIV