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Redundant braking control method, device and system, vehicle and storage medium

A braking control and vehicle technology, applied in control devices, brake transmission devices, brakes, etc., can solve problems such as vehicle instability, safety problems, and inability to fully guarantee brake failure safety, so as to prevent vehicle failure. stability, improve safety and stability

Active Publication Date: 2020-02-25
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing technology, the redundant braking system of electric vehicles is mainly realized by hydraulic active braking, which cannot fully guarantee the safety when the braking fails. However, the mechanical braking method using electronic handbrakes is easy to cause when the vehicle speed is high. The vehicle is unstable, there are safety problems, and the driving comfort of the vehicle is poor

Method used

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  • Redundant braking control method, device and system, vehicle and storage medium
  • Redundant braking control method, device and system, vehicle and storage medium
  • Redundant braking control method, device and system, vehicle and storage medium

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Embodiment 1

[0037] figure 1 It is a flowchart of a redundant braking control method provided by Embodiment 1 of the present invention. This embodiment of the present invention is applicable to the braking of electric vehicles. The method can be executed by a redundant braking control device, which can Implemented in hardware and / or software, see figure 1 , the method may include the following steps:

[0038] Step 101. Determine the deceleration torque of the motor of the vehicle according to the initial speed and initial acceleration of the vehicle.

[0039] Wherein, the initial speed can be the speed when the vehicle is ready to decelerate, the initial acceleration can be the acceleration when the strategy is ready to decelerate, the initial speed and the initial acceleration can be obtained according to the sensors set in the vehicle, and the vehicle motor can be a device that provides power in the vehicle, When the vehicle motor rotates in the forward direction, it can provide the ve...

Embodiment 2

[0051] figure 2It is a flow chart of a redundant braking control method provided by Embodiment 2 of the present invention. The embodiment of the present invention is based on the above-mentioned embodiments of the invention. In the embodiment of the present invention, when the vehicle speed is less than the threshold speed , the deceleration torque of the vehicle motor can be attenuated. Correspondingly, see figure 2 , the method provided by the embodiment of the present invention includes:

[0052] Step 201: Determine the rolling resistance, air resistance and acceleration resistance of the vehicle according to the initial speed and acceleration of the vehicle, and determine the sum of the rolling resistance, the air resistance and the acceleration resistance as a comprehensive resistance.

[0053] Among them, the rolling resistance can be the resistance generated by the rolling of the vehicle tires when the vehicle decelerates, which can be obtained through the resistanc...

Embodiment 3

[0088] Figure 4 It is a schematic structural diagram of a redundant braking control device provided in Embodiment 3 of the present invention, which can execute the redundant braking control method provided in any embodiment of the present invention, and has corresponding functional modules and beneficial effects for executing the method. The device can be implemented by software and / or hardware, and specifically includes: a torque determination module 301 , a motor deceleration module 302 , a pressure determination module 303 and a vacuum pump deceleration module 304 .

[0089] Wherein, the torque determination module 301 is configured to determine the deceleration torque of the motor of the vehicle according to the initial speed and initial acceleration of the vehicle.

[0090] The motor deceleration module 302 is used to control the motor of the vehicle to decelerate the vehicle according to the deceleration torque.

[0091] The pressure determination module 303 is configu...

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Abstract

The invention discloses a redundant braking control method, device and system, a vehicle and a storage medium. The method comprises the following steps that the deceleration torque of a vehicle motoris determined according to the initial speed and the initial acceleration of the vehicle; the vehicle motor is controlled to enable the vehicle to decelerate according to the deceleration torque; whenthe current vehicle speed of the vehicle is less than or equal to the threshold speed, the braking pressure of a vacuum booster of the vehicle is determined according to the current vehicle speed anda preset vehicle speed pressure association table; and the vacuum booster is controlled to enable the vehicle to decelerate according to the braking pressure. According to the method provided by theembodiment, the braking control under redundant braking of the vehicle is realized, the stability of the vehicle can be improved, the instability of the vehicle is prevented, and the comfort of vehicle driving is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of automatic control, and in particular to a redundant braking control method, device, system, vehicle and storage medium. Background technique [0002] With the market share of electric vehicles increasing year by year, the related technologies of electric vehicles have developed rapidly. In the field of electric vehicles, the redundant braking system of electric vehicles is responsible for receiving the braking command sent by the upper automatic driving controller through the vehicle bus to realize the braking of the vehicle. Braking, the safety and stability of the redundant braking system of electric vehicles has become an important guarantee for vehicle safety. [0003] In the existing technology, the redundant braking system of electric vehicles is mainly realized by hydraulic active braking, which cannot fully guarantee the safety when the braking fails. However, the mechani...

Claims

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Application Information

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IPC IPC(8): B60T13/52B60L15/20
CPCB60L15/2009B60L2240/423B60T13/52Y02T10/72
Inventor 黄海洋张建刘秋铮孙起春袁文建刘金波
Owner CHINA FIRST AUTOMOBILE
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