Brake feel consistency control method for electric vehicles based on i-booster and driving personality

A technology of electric vehicles and control methods, applied in the direction of brakes, brake transmission devices, vehicle components, etc., can solve problems such as inability to adjust in real time, inability to fully meet individualization, inconsistent use requirements of vehicle braking systems, etc., to improve comfort , the effect of improving driving safety

Active Publication Date: 2022-04-05
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

In addition, for different drivers, the braking behavior habits are generally quite different, and the requirements for the use of the vehicle braking system are inconsistent. However, the current boosting strategy of the electric power braking system cannot be adjusted in real time according to the different characteristics of the driver. Fully meet individual needs

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  • Brake feel consistency control method for electric vehicles based on i-booster and driving personality
  • Brake feel consistency control method for electric vehicles based on i-booster and driving personality
  • Brake feel consistency control method for electric vehicles based on i-booster and driving personality

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0029] It should be noted that the terms "comprising" and "having" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to expressly instead of those steps or elements listed, may include other steps or eleme...

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Abstract

The invention discloses an electric vehicle brake feeling consistency control method based on I-Booster and driving personality, including obtaining the driver's characteristic type, selecting a personalized booster characteristic curve consistent with the driver's characteristic type; according to the brake pedal stroke, calculating The regenerative braking force target value and the hydraulic braking force target value under pure hydraulic braking, regenerative braking, and electro-hydraulic hybrid braking conditions; decoupling the regenerative braking force through the pedal to obtain the decoupling current of the I-Booster power-assisted motor; And get the ESP control signal according to the braking working condition, including the state signal of the pressure reducing valve and the start-stop signal of the pump motor; generate the motor control signal, control the I-Booster system to generate the push rod stroke of the master cylinder, and realize the brake boosting function; The invention enables the braking action to meet the driver's psychological needs, improves the comfort of the driver, and improves the driving safety of the car.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a method for controlling the consistency of brake feeling of electric automobiles based on I-Booster and driving personality. Background technique [0002] At present, many electric vehicles use the electric power-assisted braking system represented by I-Booster. The torque of the booster motor can be adjusted, which can provide functions such as basic power assistance, regenerative brake pedal force adjustment, and active braking. In electric vehicles, how to cooperate with regenerative braking to provide drivers with safe, reliable and consistent brake pedal feeling has become a key issue that must be solved. In addition, for different drivers, the braking behavior habits are generally quite different, and the requirements for the use of the vehicle braking system are inconsistent. However, the current boosting strategy of the electric power braking system cannot be ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/66B60T13/74
CPCB60T13/66B60T13/745
Inventor 王晓晨李玉芳赵少安董雪峰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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