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

A pure electric vehicle creep torque debounce control method

A pure electric vehicle and control method technology, which is applied in the field of pure electric vehicle creep torque debounce control, can solve the problems of high requirements for technical personnel debugging experience and complex calibration process, and achieves improved calibration efficiency, simple method and stable effect. Effect

Active Publication Date: 2022-01-21
智新控制系统有限公司
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the mutual influence of the KP\KI parameters in the PI control strategy, it is necessary to conduct multiple joint adjustments on the two parameters on the basis of identifying the parameter interval in the actual calibration. The calibration process is complicated and requires high debugging experience for technicians. Therefore, it is difficult to find a set of ideal parameters to maintain the creeping speed near the target speed; and, in the actual debugging process, the motor feedback speed has a strong real-time performance, and fluctuations are inevitable

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 pure electric vehicle creep torque debounce control method
  • A pure electric vehicle creep torque debounce control method
  • A pure electric vehicle creep torque debounce control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0024] The PI controller uses the motor speed difference as input. Once the feedback speed fluctuates, it will cause the vibration of the control torque and affect the driving comfort. Therefore, it is necessary to consider the control of vibration elimination on the basis of the PI control strategy. In addition, for the calibration of creep control parameters, technicians rely on empirical data to continuously test the car on site, which consumes a lot of time to finall...

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 pure electric vehicle creep torque debounce control method. It obtains the current motor speed in each PI cycle, and calculates the refresh cycle according to the PI cycle; filters the current motor speed to obtain the filtered speed of the current cycle, and the PI controller determines the actual torque of the current cycle based on the filtered speed of the current cycle; Compare the size of the refresh cycle with the set enable cycle, determine the size of the creep torque according to the actual torque of multiple cycles and the comparison result, output the creep torque to the motor controller, and the motor controller controls the rotation of the motor. The invention combines the input source filtering of the PI controller and the timing refresh of the output results, which can effectively realize the anti-vibration control of the torque, the method is simple, the requirement for the calibration accuracy of KP\KI parameters is reduced, and the calibration of KP\KI parameters is improved. efficiency.

Description

technical field [0001] The invention belongs to the technical field of automobiles, and in particular relates to a creep torque debounce control method of a pure electric vehicle. Background technique [0002] There are many researches on automobile creep control strategies at home and abroad, but most of them are on how to realize creep control. At present, there are no relevant papers and patents on control stability such as vibration elimination. For creep control, there are currently two mainstream control methods: one is MAP control, that is, a set of vehicle speed-torque MAP is calibrated, and the driving force required for the vehicle to creep is obtained from the vehicle speed lookup table at different times to control the vehicle. Drive at a constant speed. The second is PI control, which takes the vehicle from stabilizing to creeping to the specified speed as the control target, and adjusts the driving torque. The former is open-loop control, which directly maint...

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
CPCB60L15/2063B60L2240/421B60L2240/423Y02T10/72
Inventor 刘杰畅刘秀锦郑春阳王野
Owner 智新控制系统有限公司
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