Unlock instant, AI-driven research and patent intelligence for your innovation.

Vehicle control method and device

A vehicle control device and vehicle control technology, applied in the direction of control devices, etc., can solve the problems of affecting ride comfort, reducing the accuracy of vehicle control and parking, and frequent switching of control levels, so as to reduce the difficulty of debugging and maintenance, and improve The effect of control accuracy and ride comfort

Active Publication Date: 2018-11-06
BYD CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the vehicle is under different loads, or the traction and braking performance of the vehicle changes, the existing control algorithm will easily lead to problems such as control overshoot and frequent switching of control levels, which will reduce the accuracy of vehicle control and parking, and affect the ride quality. car comfort

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
  • Vehicle control method and device
  • Vehicle control method and device
  • Vehicle control method and device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0057] Example 1: The comparison result is the difference between the first speed value and the second speed value.

[0058] Assume that the first speed value is 96 km / h, the second speed value is 101 km / h, and the control level bit information corresponding to the control command is +5 level. Comparing the first speed value with the second speed value, the obtained comparison result is -5km / h, that is, the first speed value is smaller than the second speed value, then the obtained intermediate control level bit information is higher than that corresponding to the control command The control level bit information is one level lower, that is, the middle control level bit information is +4 level.

example 2

[0059] Example 2: The comparison result is the ratio of the first speed value to the second speed value.

[0060] Assume that the first speed value is 96 km / h, the second speed value is 101 km / h, and the control level bit information corresponding to the control command is +5 level. Comparing the first speed value with the second speed value, the obtained comparison result is about 0.95, which is less than 1, that is, the first speed value is smaller than the second speed value, then the obtained intermediate control level bit information corresponds to the control command The control level bit information is one level lower, that is, the middle control level bit information is +4 level.

[0061] By adjusting the control level to the intermediate control level information according to the comparison result of the first speed value and the second speed value, the feedback adjustment of the control level can be realized according to the intermediate control level information, wh...

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

A method and device for vehicle control. The method comprises: acquiring a control instruction outputted by an automatic control system of a vehicle; making a speed value corresponding to the control instruction as a first speed value and determining control level information corresponding to the control instruction; determining the actual speed value of the vehicle at the current point in time and making the value as a second speed value; comparing the first speed value with the second speed value to produce the comparison result; performing, on the basis of the comparison result, feedback adjustment with respect to the control level information corresponding to the control instruction to produce feedback adjusted control level information and making the feedback adjusted control level information as target control level information; and controlling the vehicle on the basis of the target control level information.

Description

technical field [0001] The present invention relates to the technical field of vehicle automatic driving, in particular to a vehicle control method and device. Background technique [0002] In the existing vehicle automatic driving technology, the automatic control of the vehicle is usually realized based on classic control algorithms such as PID (proportional-differential-integral) control or fuzzy logic control. The existing control algorithm takes the current position, current speed, front target point, vehicle dynamics parameters, etc. as input to calculate the command acceleration, and then according to the command acceleration, finds the closest control level in the vehicle dynamics parameters and outputs , control the vehicle to adjust to the corresponding control level. [0003] For unloaded vehicles or vehicles with stable dynamic performance, the existing control algorithm can achieve better vehicle control effect. However, when the vehicle is under different loa...

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): B60W30/00B60W40/00B60W40/105
CPCB60W30/00B60W40/00B60W40/105B60W2050/0014B60W2050/0043B60W2520/10
Inventor 王发平其他发明人请求不公开姓名
Owner BYD CO LTD