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

A four-quadrant control method for pure electric vehicles

A control method and pure electric vehicle technology, applied in the direction of electric vehicles, control drives, control devices, etc., can solve problems such as incomplete coverage, and achieve the effects of simplifying control strategies, improving safety, and reducing complexity

Active Publication Date: 2018-06-19
清华大学苏州汽车研究院(吴江) +1
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although this strategy is simple, it cannot fully cover all working conditions that arise in reality

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
  • A four-quadrant control method for pure electric vehicles
  • A four-quadrant control method for pure electric vehicles
  • A four-quadrant control method for pure electric vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] Such as figure 2 As shown, the four-quadrant control system of the pure electric vehicle disclosed in the present invention includes a signal input module 10 connected in sequence, a vehicle controller 15 and a motor controller 16, and the signal input module 10 includes an accelerator pedal signal 11, a control The pedal signal 12, the gear signal 13 and the motor speed signal 14, the vehicle controller 15 judges the actual state of the vehicle and calculates the target torque according to the above four input signals, and sends the torque output command to the motor controller 16, and the motor controller 16 Perform torque closed loop according to the received torque, control the output torque of the motor, calculate the actual torque of the motor according to the current sensor on the motor, and feed it back to the vehicle controller 15 . The motor controller 16 also calculates the motor speed according to the speed sensor on the motor, and feeds it back to the vehi...

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 four-quadrant control system and method for a pure electric vehicle. The four-quadrant control system comprises a signal input module, a whole vehicle controller and a motor controller which are sequentially connected. The signal input module comprises an accelerator pedal signal, a braking pedal signal, a gear signal and a motor rotation speed signal. The whole vehicle controller judges the actual state of the vehicle and calculates the target torque according to the four input signals and sends a torque output command to the motor controller. The motor controller conducts a torque closed loop according to the received torque, controls a motor to output the torque, obtains the actual torque of the motor through calculation according to a current sensor on the motor and feeds the actual torque back to the whole vehicle controller. By the adoption of the system and method, the four-quadrant method is adopted for control, the control strategy is greatly simplified, the complexity of the control strategy is reduced, the logic errors caused by an inaccurate or incomplete control strategy can be well avoided, and the code control safety is improved.

Description

technical field [0001] The invention relates to an electric vehicle control, in particular to a four-quadrant control system and a control method for a pure electric vehicle. Background technique [0002] Such as figure 1 As shown in the figure, it is a typical driving structure of an electric vehicle. The motor is used as the driving source, which is decelerated and increased through the reducer, and then transmitted to the wheels to drive the wheels. Due to the different characteristics of the motor, the gearbox is generally canceled for pure electric vehicles. How to control such pure electric vehicles is a new problem. Taking the patent CN201210035496.7 as an example, the general existing control only considers two modes of driving and braking. When the driver steps on the accelerator, the control system enters the driving mode, and the system sends out positive torque to drive the system forward; when the driver When the brake pedal is pressed, the control system ente...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/421B60L2240/423B60L2240/486Y02T10/72
Inventor 葛强强王月宏邱帅周伟波王秀锐任晨佳
Owner 清华大学苏州汽车研究院(吴江)
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