A vehicle stability system and control method based on safety boundary
A technology of safety boundary and control method, applied in control devices, vehicle components, input parameters of external conditions, etc., can solve problems such as unsatisfactory results, and achieve the effect of improving stability performance
Active Publication Date: 2021-11-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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This single means of vehicle stability control can achieve a certain effect, but the result is not ideal enough
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[0048] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
[0049] This invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, components are exaggerated for clarity.
[0050] refer to figure 1 As shown, a vehicle stability system based on a safety boundary includes a sensor module, a road adhesion coefficient estimation module, an active steering module, a yaw moment control module, an ECU control module, and a safety boundary calculation module;
[0051] The sensor module includes a yaw rate sensor, a side slip angle sensor, a front wheel angle sensor, and a wheel speed sensor;
[0052] The yaw rate sensor and the center-of-mass side slip angle se...
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The invention discloses a safety boundary-based vehicle stability system and control method. The system includes a sensor module, a road surface adhesion coefficient estimation module, an active steering module, a yaw moment control module, an ECU control module, and a safety boundary calculation module; The boundary calculation module calculates the steady-state value and limit value of the yaw rate and the side slip angle of the center of mass in the current vehicle state according to the obtained yaw rate signal, center of mass side slip angle signal, front wheel rotation angle signal, and road surface adhesion coefficient signal. As a result, three characteristic areas of stable area, transitional area and unstable area are divided, and the area where the vehicle is located at the current moment is judged, and the signal is transmitted to the ECU module; the ECU module coordinates and controls the active area according to the signal from the safety boundary calculation module The steering module and the yaw moment control module work to improve the stability of the vehicle.
Description
technical field [0001] The invention relates to the field of automobile auxiliary driving, in particular to a safety boundary-based vehicle stability system and control method. Background technique [0002] The stability of the car refers to the ability of the car to maintain the original state of motion or quickly restore the original state of motion when it is disturbed by external factors during driving. It is one of the important performances of the car. The quality of automobile stability directly affects the level of performances such as its driving speed and driving safety. [0003] At present, the stability control of the vehicle is mainly to improve the stability of the vehicle through independent active steering or yaw moment control. This independent means of vehicle stability control can achieve a certain effect, but the result is not ideal enough. The vehicle stability control method integrating active steering and yaw moment control has a more excellent effec...
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IPC IPC(8): B60W30/02
CPCB60W30/02B60W2520/14B60W2520/28B60W2552/40
Inventor 邹松春赵万忠黄云丰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS