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Whole vehicle drive-by-wire system and control method for unmanned vehicle

A technology for unmanned vehicles and vehicle lines, which is applied to vehicle components, braking safety systems, circuits or fluid pipelines, etc., can solve problems such as unmanned heavy-duty vehicles, and improve dynamic control capabilities and reliability. Effect

Pending Publication Date: 2020-07-31
SUZHOU AUTO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unmanned trucks are mainly composed of wire-controlled chassis, on-board computing platforms and smart sensors. At present, most of the chassis systems of unmanned trucks in trial operation are modified from traditional vehicle chassis. By adding power steering motors and simulating human pedaling board, changing the vehicle control bus protocol, etc., cannot meet the high reliability and safety requirements of unmanned vehicles

Method used

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  • Whole vehicle drive-by-wire system and control method for unmanned vehicle

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Embodiment 1

[0022] refer to figure 1 As shown, this embodiment is a vehicle-by-wire control system for an unmanned vehicle, including a central chassis control module, an emergency stop switch connected to the central chassis control module, and an air brake system connected to the emergency stop switch;

[0023] The central chassis control module is connected to the power subnetwork used to execute the electronic braking of the vehicle, the air brake system used to implement the mechanical brake of the vehicle, and the parking system for the electronic braking of the vehicle or the parking system when the mechanical brake fails through the CAN bus interface. Braking electronic parking system.

[0024] The power subnet includes air conditioning system, power conversion module, air compressor controller, thermal management system (TMS), battery management module (BMS), and motor drive module (MCU). The battery management module is connected with a fast charging / slow charging module to sup...

Embodiment 2

[0040] This embodiment is a vehicle-by-wire control method for an unmanned vehicle, comprising the following steps:

[0041] 1) The emergency stop switch is connected to the central chassis control module. When the vehicle is out of control, the emergency stop switch is manually operated. After the central chassis control module detects the emergency stop information of the emergency stop switch, it sends a parking command;

[0042] 2) The central chassis control module is connected to the power subnetwork, air brake system and electronic parking system through the CAN bus interface. After the power subnetwork receives the parking command, it executes the electronic braking of the vehicle; after the air brake system receives the parking command, it Execution of the mechanical brakes of the vehicle;

[0043] 3) When the electronic brake or mechanical brake fails, or when the electronic parking system detects that the vehicle speed drops to zero; the electronic parking system ex...

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Abstract

The invention discloses a whole vehicle drive-by-wire system and control method for an unmanned vehicle. The system comprises a central chassis control module, an emergency stop switch connected withthe central chassis control module and an air brake system connected with the emergency stop switch, wherein the central chassis control module is connected with a power subnet used for executing service electronic braking, an air braking system used for executing service mechanical braking and an electronic parking system used for executing parking braking when service electronic braking or mechanical braking fails through a CAN bus interface. According to the invention, multiple safety initiative and real-time response capability of the vehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of unmanned driving, and in particular relates to a vehicle-by-wire control system and a control method of an unmanned vehicle. Background technique [0002] In the field of logistics and transportation, during the entire life cycle of medium and large-scale trucks, the initial purchase cost is less than 10%, and its employment cost is as high as 60%. 60% of the main causes of accidents are caused by drivers. Unmanned trucks can avoid traffic accidents caused by human factors. Unmanned trucks are mainly composed of wire-controlled chassis, on-board computing platforms and smart sensors. At present, most of the chassis systems of unmanned trucks in trial operation are modified from traditional vehicle chassis. By adding power steering motors and simulating human pedaling Board, change the vehicle control bus protocol, etc., cannot meet the high reliability and safety requirements of unmanned vehicles. Cont...

Claims

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Application Information

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IPC IPC(8): B60R16/023B60T17/22
CPCB60R16/0232B60T17/22
Inventor 宿佳敏唐新鑫黄夏锋田永义
Owner SUZHOU AUTO TECH
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