Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Control system and control method for long-distance continuous downhill braking in automatic driving

A technology of automatic driving and control methods, which is applied in the field of rail transport vehicles, can solve problems such as waste of electric energy, and achieve the effect of ensuring safety and precise speed regulation

Pending Publication Date: 2022-04-05
无锡江南智造科技股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this braking method can achieve the purpose of stable speed regulation or parking, the waste of electric energy is serious

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control system and control method for long-distance continuous downhill braking in automatic driving
  • Control system and control method for long-distance continuous downhill braking in automatic driving
  • Control system and control method for long-distance continuous downhill braking in automatic driving

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0047] The control system for long-distance continuous downhill braking in automatic driving provided by Embodiment 2 is completely the same as Embodiment 1, and this embodiment will not be described in detail.

[0048] Such as Figure 4 As shown, this embodiment also provides a control method for long-distance continuous downhill braking in automatic driving, and the control method is realized by the control system provided by this embodiment. Described control method comprises the steps:

[0049] Step 1. When the power of the battery 1 is greater than or equal to the battery 1 charging power protection threshold or when the voltage of the DC bus 2 is greater than the battery 1 charging protection voltage threshold, the battery 1 charging power protection threshold is 95% of the battery 1's total power; The charging protection voltage threshold of battery 1 is 95% of the highest voltage of battery 1; the switch devices 8 on the three branches are all opened by PLC control; a...

Embodiment 3

[0057] The control system for long-distance continuous downhill braking in automatic driving provided by Embodiment 3 is completely the same as Embodiment 1, and this embodiment will not be described in detail.

[0058] Such as Figure 4 As shown, this embodiment also provides a control method for long-distance continuous downhill braking in automatic driving, and the control method is realized by the control system provided by this embodiment. Described control method comprises the steps:

[0059] Step 1. When the power of the battery 1 is greater than or equal to the protection threshold of the battery 1 charging power or when the voltage of the DC bus 2 is greater than the charging protection voltage threshold of the battery 1, the charging power protection threshold of the battery 1 is 90% of the total power of the battery 1; The charging protection voltage threshold of battery 1 is 90% of the highest voltage of battery 1; the switch devices 8 on the three branches are al...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a control system and method for long-distance continuous downhill braking in automatic driving. The control system comprises a battery, a direct-current bus, electric braking equipment and a driving device. The electric braking equipment comprises a braking control unit and a braking resistor; the driving device comprises a variable-frequency motor and a variable-frequency governor; according to the control system and the control method implemented by applying the control system provided by the invention, in the long-time downhill process of the AGV, the PLC comprehensively judges and selects a braking mode according to the electric quantity of the battery, the direct-current voltage of the bus and the charging current of the battery; through cooperative use of regenerative braking and energy consumption braking, part or all of inertia power can be stored in the storage battery on the premise that the performance of the battery is protected, and energy saving is achieved; the brake control unit monitors the voltage of the direct-current bus in real time and controls the switching-on and switching-off of the brake unit, so that accurate speed regulation can be realized; and the charging current and the charging voltage are monitored and limited in real time, so that the charging safety of the battery is ensured.

Description

technical field [0001] The invention relates to the technical field of rail transport vehicles, in particular to a control system and control method for continuous downhill braking in mid- and long-distance automatic driving. Background technique [0002] Self-driving cars are also known as unmanned vehicles, or AGV for short. Self-driving cars realize unmanned driving through computer systems. How to precisely control the braking process is a key issue in the research of autonomous driving safety technology; unmanned AGV is a transport vehicle used for maintenance, overhaul and infrastructure construction departments to perform tasks, and has a large load capacity. Self-driving AGV is the application of driverless technology to AGV. Therefore, how to precisely control the braking process of the self-driving AGV is an important part of ensuring the safe and smooth operation of the self-driving AGV. [0003] At present, the commonly used braking methods of AGV are mainly di...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B60L7/22B60L58/15
CPCY02T10/70
Inventor 李俊杰李建明钟欣吴刘成陈永强张文燕于隆煌周可可
Owner 无锡江南智造科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com