Rear wheel steering control method and rear wheel steering control system
A rear wheel steering and control method technology, applied in the field of vehicles, to achieve the effect of eliminating the dead zone of response and reducing energy consumption
Active Publication Date: 2021-06-08
WUHAN LOTUS CARS CO LTD
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Problems solved by technology
[0003] However, the active control system will inevitably generate a certain amount of system energy consumption. With the gradual improvement of environmental protection and emission requirements, and the gradual deepening of the electrification of the automobile industry, energy consumption and energy management issues deserve special attention. The control logic and actuator characteristics optimize the energy consumption of the system, and the energy consumption that does not produce benefits should be eliminated as much as possible
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[0044] figure 1 A schematic flowchart of a rear wheel steering control method according to an embodiment of the present invention is shown. The rear wheel steering control method is used to control the rear wheel steering control device. figure 2 A schematic structural block diagram of a rear wheel steering control device according to an embodiment of the present invention is shown. Such as figure 2 As shown, the rear wheel steering control device includes a target angle generation controller 1, an actuator angle position controller 2, and a motor controller 3. The actuator angle position controller 2 communicates with the target angle generation controller 1 and communicates with the motor Controller 3 is connected. Such as figure 1 As shown, the rear wheel steering control method includes:
[0045] Step S100, acquiring the vehicle state signal input by the steering wheel;
[0046] Step S200, making the target angle generation controller output a target angle command ...
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The invention provides a rear wheel steering control method and a rear wheel steering control system. The rear wheel steering control method comprises the steps that: a vehicle state signal input by a steering wheel is obtained; a target angle generation controller outputs a target angle instruction containing a rear wheel steering target angle according to the vehicle state signal; first verification is carried out before the target angle instruction is sent to an actuator angle position controller, and the result of the first verification is used for indicating whether the target angle instruction is sent to the actuator angle position controller or not; when the first verification result is yes, second verification is carried out, and the second verification result is used for indicating whether the actuator angle position controller calculates and converts the target angle instruction into a torque demand instruction or a rotating speed demand instruction or not; and when the second verification result is yes, the actuator angle position controller sends the torque demand instruction or the rotating speed demand instruction to a motor controller. According to the scheme, unnecessary rear wheel steering intervention in some scenes can be reduced.
Description
technical field [0001] The invention relates to the technical field of vehicles, in particular to a rear wheel steering control method and a rear wheel steering control system. Background technique [0002] With the development of the automobile industry, it has gradually become the development trend of the automobile industry to configure the active rear wheel steering function in the chassis field. The rear wheel steering function can effectively improve the agility of the car at low speed driving and the stability of high speed driving, and has a positive effect on vehicle handling performance. Great improvement. [0003] However, the active control system will inevitably generate a certain amount of system energy consumption. With the gradual improvement of environmental protection and emission requirements, and the gradual deepening of the electrification of the automobile industry, energy consumption and energy management issues deserve special attention. The control ...
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Login to View More IPC IPC(8): B62D5/04B62D6/00
CPCB62D5/046B62D6/001
Inventor 徐俊王玮周以勤李莽姚宾
Owner WUHAN LOTUS CARS CO LTD