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A torque distribution method for distributed drive buses based on real-time road conditions

A torque distribution method and real-time road condition technology, applied in the direction of control drive, electric vehicle, drive interaction, etc., can solve problems such as uncoordinated control, achieve the effects of avoiding chattering, improving vehicle controllability, and improving pre-allocation accuracy

Active Publication Date: 2021-08-13
XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the above patents have the following disadvantages: (1) The control of distributed drive vehicles usually includes stability control and drive anti-slip control, but most of them cannot coordinate the two well

Method used

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  • A torque distribution method for distributed drive buses based on real-time road conditions
  • A torque distribution method for distributed drive buses based on real-time road conditions
  • A torque distribution method for distributed drive buses based on real-time road conditions

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Embodiment Construction

[0028] Specific embodiments of the present invention will be described below with reference to the accompanying drawings. In order to provide a comprehensive understanding of the present invention, many details are described below, but it will be apparent to those skilled in the art that the present invention can be practiced without these details. Known components, methods and processes will not be described in detail below.

[0029]A distributed drive bus torque distribution method based on real-time road conditions. The present invention is an example of a rear-drive pure electric bus. Each wheel is used to measure the wheel speed in real time. The steering wheel angle sensor is nested on the steering wheel column to measure the steering wheel angle information. The body attitude sensor is placed at the center of mass of the vehicle to measure the longitudinal acceleration, lateral acceleration and yaw rate of the vehicle. , Each sensor communicates with the vehicle contro...

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Abstract

A distributed drive bus torque distribution method based on real-time road conditions, including: the whole vehicle controller performs filter processing on each sensor signal; uses kinematics or dynamics methods to estimate some key vehicle state parameters; the whole vehicle controller Firstly, the driving torque is pre-distributed based on the vertical load transfer, so as to make full use of the ground adhesion and improve the handling of the vehicle; the vehicle controller estimates the best slip of the current road in real time according to the relationship curve between the road adhesion coefficient and the slip rate Rate. When driving at low speeds, give priority to power performance, each driving wheel performs torque distribution according to the control target of their respective current best slip ratios; when driving at high speeds, focus on stability, use even distribution for direct driving, and neutralize steering Steering is targeted at the distribution of drive torque.

Description

technical field [0001] The invention relates to the technical field of distributed driving torque control, more specifically, a method for distributing torque of distributed driving buses based on real-time road conditions. Background technique [0002] Compared with the characteristics of the differential torque of the centralized drive system, the distributed drive system is more flexible, and the torque can be distributed arbitrarily, and the quality of the torque distribution algorithm directly affects the degree of tire wear and the power and economy of the vehicle. and handling etc. Therefore, a more rigorous algorithm is required for the torque distribution of the wheel motors to improve the overall performance of the vehicle. [0003] At present, some patents have disclosed the torque control method of distributed drive, for example: the invention patent with publication number 110497900A discloses a method for controlling the electronic differential stability of di...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/12B60L2240/423B60L2240/461B60L2240/463B60L2250/26Y02T10/72
Inventor 苏亮刘志伟黄玲宋光吉
Owner XIAMEN KING LONG UNITED AUTOMOTIVE IND CO LTD