Drive-by-wire low-speed flexibility adjustment control method and system
An adjustment control and flexibility technology, which is applied in the direction of automatic steering control components, transportation and packaging, vehicle components, etc., can solve problems such as poor flexibility, large turning radius, and the inability of vehicles to get out of trouble, and achieve the goal of improving stability and control accuracy Effect
Pending Publication Date: 2022-01-28
DONGFENG MOTOR GRP
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Problems solved by technology
[0002]In the field of traditional automobile control technology, the steering of the vehicle is usually controlled by the front wheel rotation method. During the steering process of the vehicle, the rear axle will not actively steer. Based on the vehicle structure and power According to scientific analysis, when the steering wheel is turned in a certain direction, the vehicle will still have a large turning radius. At the same time, according to different wheelbase and steering angle restrictions, it is difficult for the vehicle to get out of trouble in a narrow space, and the flexibility of low-speed driving vehicles poor
[0003]The existing technical solution is limited to the front wheel turning, and the rear axle cannot actively rotate. When the steering wheel is turned to a certain direction, the vehicle will still have a large Turning radius, exercise in a narrow range, poor driving flexibility of the vehicle, and even the vehicle cannot get out of trouble in some environments
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[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0057] It should be pointed out that, according to the needs of implementation, each step / component described in this application can be split into more steps / components, and two or more steps / components or part of the operations of steps / components can also be combined into a new Step / component, to realize the object of the present invention.
[0058] 1. A wire-controlled low-speed flexibility...
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The invention relates to the technical field of automobile control, in particular to a drive-by-wire low-speed flexibility adjustment control method and system. By carrying a rear wheel steering machine, four-wheel steering of the vehicle is achieved, a corresponding control strategy is executed according to the current vehicle speed and running track, the turning radius of the vehicle is dynamically adjusted, and the flexibility of the vehicle running at a low speed when the turning radius is too large is improved; a low-speed flexibility adjustment control method is provided, the currently needed target rear wheel steering angle can be calculated according to the current vehicle speed and the front wheel steering angle and a specific proportion curve, the method is used for achieving control over the turning radius, and the control precision of the turning radius can be improved; according to the drive-by-wire low-speed flexibility adjustment control system, through cooperation of a signal obtaining module, a vehicle-mounted HMI module, a rear wheel steering engine control module and an execution module, the drive-by-wire low-speed flexibility adjustment control method can be achieved.
Description
technical field [0001] The invention relates to the technical field of automobile control, in particular to a control method and system for low-speed flexibility adjustment by wire control. Background technique [0002] In the field of traditional automobile control technology, the steering of the vehicle is usually controlled by the front wheel rotation method. During the steering process of the vehicle, the rear axle will not actively steer. Based on the vehicle structure and dynamics analysis, when the steering wheel is turned to a certain direction, the vehicle will remain the same. There will be a larger turning radius, and at the same time, according to different wheelbase and steering angle restrictions, it is difficult for the vehicle to get out of trouble in a narrow space, and the vehicle is less flexible when driving at low speed. [0003] Existing technical solutions are limited to front wheels turning, and the rear axle cannot be actively rotated. When the steer...
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Login to View More IPC IPC(8): B62D6/00B62D7/14B62D101/00B62D113/00B62D125/00
CPCB62D6/00B62D7/14
Inventor 郝慧兵
Owner DONGFENG MOTOR GRP