Multi-time scale rolling optimization control method for stability of vehicle yaw

A multi-time scale, rolling optimization technology, applied in the direction of control devices, etc., can solve problems such as traffic accidents, vehicle instability, steering wheel angle deviation, etc., and achieve the effect of avoiding vehicle instability

Active Publication Date: 2015-08-26
JILIN UNIV
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Problems solved by technology

The traditional vehicle lateral stability control takes a given steering wheel angle as input, obtains the ideal yaw rate through a two-degree-of-freedom steady-state steering model, and takes tracking the ideal yaw rate as the

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  • Multi-time scale rolling optimization control method for stability of vehicle yaw
  • Multi-time scale rolling optimization control method for stability of vehicle yaw
  • Multi-time scale rolling optimization control method for stability of vehicle yaw

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Embodiment Construction

[0035] The technical solution proposed by the present invention will be further elaborated and explained below in conjunction with the accompanying drawings.

[0036] The present invention provides a multi-time-scale vehicle yaw stability rolling optimization control method considering driver factors. The method includes the following steps:

[0037] Step 1: Establish a simplified vehicle dynamics model

[0038] In order to facilitate the analysis and control of vehicle systems, it is first necessary to establish a simplified vehicle dynamics model for the design of driver decision-making module and nonlinear lateral stability integrated controller. Taking into account that the vehicle's handling stability is most closely related to the vehicle's longitudinal and yaw motion, the entire vehicle model is first simplified to a two-degree-of-freedom model. Establish a coordinate system on the vehicle, the origin is at the center of mass of the vehicle, the forward direction of the vehic...

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Abstract

The invention discloses a multi-time scale rolling optimization control method for stability of a vehicle yaw. The method comprises the steps that vehicle path information is taken as a research point, side behavior characteristics of a driver are considered, and through rolling previewing decision optimization, a steering wheel angle meeting a driving path is obtained; and on the basis, different time scales of driver behaviors and vehicle active safety control are considered, and the multi-time scale rolling optimization method is adopted to control side stability of a vehicle. Firstly, a simplified vehicle dynamical model is built, and then design of a double-closed-loop controller is carried out, wherein the double-closed-loop controller comprises a driver decision module and a nonlinear side stability integrated control module, a control loop formed by the driver decision module and the nonlinear side stability integrated control module serves as an outer control loop, and a control loop formed by the nonlinear side stability integrated control module serves as an inner control loop, so that the stability control over the vehicle yaw can be completed.

Description

Technical field [0001] The invention relates to a multi-time scale vehicle yaw stability rolling optimization control method considering driver factors, and belongs to the technical field of vehicle yaw stability control. Background technique [0002] As cars enter the production and life of society, the frequent occurrence of traffic accidents has gradually attracted people’s attention to the problem of traffic safety, and the lateral instability of vehicles is an important cause of traffic accidents. Therefore, the problem of lateral stability of vehicles gradually It has received extensive attention from consumers and researchers. The traditional vehicle lateral stability control takes a given steering wheel angle as input, obtains the ideal yaw rate through a two-degree-of-freedom steady-state steering model, and takes the ideal yaw rate on tracking as the control target, but this control is used Method Once the driver makes a misoperation, it will cause the deviation of the...

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Application Information

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IPC IPC(8): B60W30/02B60W40/00
CPCB60W30/02B60W40/00B60W2050/0008B60W2050/0017B60W2050/0031
Inventor 郭洪艳麻颖俊郝宁峰陈虹
Owner JILIN UNIV
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