Automobile rollover stability integrated control method for limit braking working conditions

A brake working condition and integrated control technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problem of not analyzing the stability of the initial value of the vehicle parameters, and not considering the integration of various brakes of adaptive vehicles Working conditions, unable to guarantee the stability of the car rollover, etc., to achieve the effect of improving the stability of the car

Active Publication Date: 2018-06-12
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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  • Automobile rollover stability integrated control method for limit braking working conditions
  • Automobile rollover stability integrated control method for limit braking working conditions
  • Automobile rollover stability integrated control method for limit braking working conditions

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Embodiment Construction

[0014] Hereinafter, the best embodiment of the present invention will be described with reference to the drawings.

[0015] 1. Build a parametric model of the vehicle

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

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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 automobile rollover control system, there is no analysis of the relationship between the vehicle parameters, the initial values ​​of the chassis system structural parameters, the uncertainty of the structural parameters and the automobile rollover stability, and the analysis of the automobile rollover is general It is only for a certain operating condition of the car, such as normal braking or low adhesion coefficient road braking, and other operating conditions, without integrated consideration of how to adapt to the various braking conditions of the car, such as: high-speed emergency braking , Integrated rollover stability control for steering braking, turning braking on low adhesion coefficient roads, etc. In addition, in the analysis of automobile rollove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/04G06F17/50
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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