Vehicle stability control method and system
A stability control method and vehicle technology, applied in the field of vehicles, can solve the problems of difficult control of braking force difference, poor driving experience of the driver, overshoot and other problems
Active Publication Date: 2021-03-26
NEXTEER AUTOMOTIVE SYST SUZHOU
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Problems solved by technology
[0003] The existing vehicle stability system controls the lateral trajectory of the vehicle by applying braking force. Since the lateral dynamic control of the vehicle is more sensitive than the longitudinal direction, it is difficult to control the difference in braking force between different wheels, resulting in a sudden change in the yaw rate, which often brings It will give the driver a bad driving experience. If the gradient of the brake pressure is too large or too slow, it will cause hysteresis or overshoot of the system; therefore, using the difference in braking force between different wheels to achieve lateral control of the vehicle is an effective but not perfect method. The way
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[0079] An example embodiment will now be described more fully with reference to the accompanying drawings. However, an example embodiment can be implemented in a variety of forms, and is not to be construed as being limited to the embodiments set forth herein; in contrast, the present invention will be fully and complete, and the concept of example embodiments is fully conveyed A technician in the art. The same reference numerals are denoted by the same or similar structures, and therefore repeat them will be omitted.
[0080] Such as figure 1 As shown, in order to solve the technical problem in the prior art, the present invention provides a vehicle stabilization control method, including the following steps:
[0081] S100: Get the first vehicle parameters;
[0082] S200: Determine the current object type to which the vehicle is currently located according to the first vehicle parameter;
[0083] S300: According to the first vehicle parameter and the current abnormal state type ...
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The invention provides a vehicle stability control method and system. The method comprises the steps of acquiring first vehicle parameters; judging the current abnormal state type of the vehicle according to the first vehicle parameters; determining an output steering superposition instruction according to the first vehicle parameters and the current abnormal state type of the vehicle; and generating a steering motor torque request according to the output steering superposition instruction. According to the technical scheme for achieving vehicle stability control based on an electric power steering technology, by combining the electric power steering technology and a vehicle dynamic control technology, more accurate dynamic response can be obtained, better driving experience is brought, and the vehicle stability before vehicle braking intervention is improved.
Description
Technical field [0001] The present invention relates to the field of vehicle, and more particularly to a vehicle stabilization control method and system. Background technique [0002] Traditional vehicle stabilization control system, such as ABS (anti-lock system), ESC (body stability control system), etc., mostly mature, mostly based on the difference between the driver's expected dynamic response and the dynamic response of the actual vehicle, respectively Different wheels brake power, thereby changing the vehicle transverse and longitudinal trajectory to achieve the purpose of steady state control of the vehicle. [0003] The existing vehicle stabilization system controls the transverse trajectory of the vehicle by applying a braking force. Since the transverse dynamic control of the vehicle is more sensitive to longitudinal direction, the difficulty of braking force between the different wheels is large, causing the horizontal angular angular velocity mutation, often belt The...
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IPC IPC(8): B62D5/04
CPCB62D5/0463
Inventor 杨昆
Owner NEXTEER AUTOMOTIVE SYST SUZHOU