A vehicle control method
A vehicle control and vehicle technology, applied in the direction of control drive, electric vehicles, vehicle components, etc., can solve problems such as safety accidents, back slip, insufficient vehicle driving force, etc., and achieve the effect of improving safety
Active Publication Date: 2017-12-01
深圳东风汽车有限公司
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Problems solved by technology
As a high-tech automotive product, the comfort and safety of electric vehicles deserve special attention. For example, starting on a hill is an important aspect. Due to the time difference between releasing the brake and stepping on the accelerator, the driving force of the vehicle is insufficient during this period. Or there is no driving force, it is easy to cause the vehicle to roll back, not only the comfort is poor, but also may lead to safety accidents
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[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0051] Before introducing the implementation of a vehicle control method disclosed in the present invention, firstly, the definition of the three axes after the three-axis acceleration sensor is installed in the vehicle will be described.
[0052] The three-axis acceleration sensor is a high-precision sensor that can measure the absolute acceleration of three orthogonal axes (X-axis, Y-axis, Z-axis). Absolute acceleration refers to the acceleration of the three...
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The invention discloses a vehicle control method which comprises the following steps: obtaining accelerations of the vehicle in the X-axis, Y-axis and Z-axis directions through a three-axis acceleration sensor, wherein the X-axis is consistent with the forward direction of the vehicle, the Y-axis is consistent with the left-right direction of the vehicle body, and the Z-axis is consistent with the vertical direction of the vehicle body; acquiring the motion acceleration of the vehicle in the X-axis direction; carrying out smoothing filtering to the accelerations of the vehicle in the X-axis, Y-axis and Z-axis directions and the motion acceleration of the vehicle in the X-axis direction; calculating the current angle of the vehicle according to the accelerations of the vehicle in the X-axis, Y-axis and Z-axis directions and the motion acceleration of the vehicle in the X-axis direction which are obtained through smoothing filtering; controlling the vehicle according to the current angle of the vehicle. The vehicle control method provided by the invention can effectively improve the safety of the vehicle control.
Description
technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a vehicle control method. Background technique [0002] Electric vehicles have no exhaust emissions, low cost of use, and good low-speed torque performance, making them the most popular development direction of automotive technology, and more and more appear in people's lives. As a high-tech automotive product, the comfort and safety of electric vehicles deserve special attention. For example, starting on a hill is an important aspect. Due to the time difference between releasing the brake and stepping on the accelerator, the driving force of the vehicle is insufficient during this period. Or there is no driving force, it is easy to cause the vehicle to slip back, not only the comfort is poor, but also may lead to safety accidents. Therefore, how to improve the safety of vehicle control is an urgent problem to be solved. Contents of the invention [0003] The invent...
Claims
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IPC IPC(8): B60W30/18B60W10/08B60W10/26B60L15/20
CPCB60L15/20B60W10/08B60W10/26B60W30/18009B60W30/18118B60W40/105B60W40/107B60W40/109B60W40/11B60W2710/083Y02T10/72
Inventor 周启君冯坤裴满高飞
Owner 深圳东风汽车有限公司