Steering and braking priority control system and control method for pure electric vehicles
A technology of pure electric vehicles and control methods, which is applied in the field of steering and braking priority control systems, can solve problems affecting driving safety, no enabling signal, and undesired complete vehicles, so as to ensure driving safety and driving safety Effect
Active Publication Date: 2020-06-26
WEICHAI POWER CO LTD
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Problems solved by technology
[0006] Turning on or off of the power steering motor depends entirely on the enable signal from the vehicle controller to the power steering motor controller. When the vehicle controller fails or the wiring harness terminal is withdrawn resulting in poor contact, there will be no enable signal when driving. When the power steering motor does not work, especially in high-speed driving, it is easy to cause driving safety
[0007] Whether the main motor outputs torque depends entirely on the torque given by the vehicle controller to the main motor controller through the CAN line. When the vehicle CAN network error frame is high or other reasons cause the vehicle controller to give the main motor controller an incorrect driving torque When the command is issued, it will cause the undesired movement of the whole vehicle, which will affect the driving safety at this time
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[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0027] figure 2 It is a schematic structural diagram of the control system in this embodiment. Such as figure 2 As shown, the steering and braking priority control system for pure electric vehicles in this embodiment includes a vehicle controller 10, a main motor controller 20, a main motor 30, a power steering motor controller 40, and a power steering motor 50 , brake pedal 60 and accelerator pedal 70. Wherein the whole vehic...
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The invention belongs to the technical field of vehicle control and in particular relates to a steering and braking priority control system and control method used for a pure electric vehicle. The steering and braking priority control method used for the pure electric vehicle comprises the following steps of increasing rotation speed association between a power-assisted steering motor controller and a main motor; reading a rotation speed signal of the main motor by using the power-assisted steering motor controller; increasing a switching amount association among a main motor controller, a brake pedal and an accelerator pedal; and detecting the switching amount of the brake pedal and the switching amount of the accelerator pedal by using the main motor controller. According to the steeringand braking priority control system and control method used for the pure electric vehicle, the rotation speed signals of the power-assisted steering motor controller and the main motor are associated, and the switching amounts of the main motor controller, the brake pedal and the accelerator pedal are associated, no missing of the steering in the running process is guaranteed, and the running safety of the whole vehicle is guaranteed.
Description
technical field [0001] The invention belongs to the technical field of vehicle control, and in particular relates to a steering and braking priority control system and control method for pure electric vehicles. Background technique [0002] The existing control assembly technology such as figure 1 As shown, the vehicle controller 10 is connected to the main motor controller 20 through a CAN line, the main motor 30 is connected to the main motor controller 20 through a power line, and the accelerator pedal 70 and the brake pedal 60 are respectively connected to the vehicle controller 10 hard. The power steering motor controller 40 is hard-wired connected with the vehicle controller 10 to receive the enable signal given by the vehicle controller 10, and the power steering motor 50 and the power steering motor controller 40 are connected to each other through a three-phase power line. connect. [0003] The work control process of the power steering motor 50 is as follows: the...
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IPC IPC(8): B60L15/20B60R16/023B62D5/04
CPCB60L15/20B60R16/023B62D5/04Y02T10/72
Inventor 毕爽常久鹏闫明
Owner WEICHAI POWER CO LTD