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An integrated control method for vehicle rollover stability under extreme braking conditions

A braking condition, integrated control technology, applied in geometric CAD, design optimization/simulation, special data processing applications, etc. Integrated consideration of adaptive vehicle various braking conditions and other issues to achieve the effect of improving vehicle stability

Active Publication Date: 2020-08-07
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] In the existing vehicle rollover control system, there is no analysis of the relationship between the vehicle parameters, the initial value of the chassis system structural parameters, the uncertainty of the structural parameters and the vehicle rollover stability, and the analysis of vehicle rollover is generally It is only for a certain operating condition of the car, such as the car's normal braking or low adhesion coefficient road braking and other working conditions, without integrated consideration of how to adapt to various braking conditions of the car, such as: high-speed emergency braking , steering braking, low adhesion coefficient road turning braking and other working conditions integrated rollover stability control
In addition, in the analysis of vehicle rollover stability, the uncertain information in each stage of product design is not integrated and optimized, and the stability of vehicle rollover stability cannot be guaranteed in each stage of product development, that is, the development and design stage, manufacturing stage, and use stage. Integrated optimized performance and robust performance of

Method used

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  • An integrated control method for vehicle rollover stability under extreme braking conditions
  • An integrated control method for vehicle rollover stability under extreme braking conditions
  • An integrated control method for vehicle rollover stability under extreme braking conditions

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Embodiment Construction

[0014] The best implementation mode of the present invention will be described below in conjunction with the accompanying drawings.

[0015] 1. Construct vehicle parametric model

[0016] First define the initial value and definition domain of the basic parameters of the vehicle, including parameters such as the wheelbase, wheelbase, kingpin center distance, and center of mass position of the vehicle, and then define the technical parameters of the chassis, including the steering mechanism, suspension system, braking system, etc. The size of the system, the initial value and definition domain of parameters such as the steering mechanism, suspension system, brake system installation position, suspension stiffness and damping, and the maximum rotation angle of the steering mechanism, and then define the operating parameters in the car, including vehicle load, The initial value and definition domain of the steering torque, etc., establish a parametric model of the whole vehicle i...

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Abstract

The invention provides an automobile rollover stability integrated control method for limit braking working conditions. The correlation of various uncertain factors such as automobile parameters, chassis technical parameters and operating parameters which affect automobile rollover stability is analyzed by applying the robust design theory, the affect of the initial value and the variation of theparameters on the automobile rollover stability is analyzed, a whole preference aggregate function is applied to integrate the variables of the automobile parameters, the technical parameters and theoperating parameters into an automobile integrated robust model by layers, a simplified automobile rollover stability model for the limit braking working conditions is established through a monte carlo method, and self-adaptive automobile rollover stability control for the various limit braking working conditions is achieved, so that the automobile stability for the limit braking working conditions is improved in the aspects of the initial design stage, the manufacturing process and the using process.

Description

technical field [0001] The invention relates to an automobile control method, in particular to an automobile rollover stability control method under extreme braking conditions. Background technique [0002] In the existing vehicle rollover control system, there is no analysis of the relationship between the vehicle parameters, the initial value of the chassis system structural parameters, the uncertainty of the structural parameters and the vehicle rollover stability, and the analysis of vehicle rollover is generally It is only for a certain operating condition of the car, such as the car's normal braking or low adhesion coefficient road braking and other working conditions, without integrated consideration of how to adapt to various braking conditions of the car, such as: high-speed emergency braking , steering braking, low adhesion coefficient road turning braking and other working conditions integrated rollover stability control. In addition, in the analysis of vehicle r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/04G06F30/15G06F30/20
CPCB60W30/04G06F30/15G06F30/20
Inventor 张蕾董恩国刘臣富
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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