Automotive chassis technical parameter robust design method based on full life circle

A full life cycle, automotive chassis technology, applied in computing, electrical digital data processing, special data processing applications, etc., can solve problems such as products that cannot be guaranteed, and achieve the effect of ensuring optimality, optimal performance and robust performance

Inactive Publication Date: 2014-07-23
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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Problems solved by technology

These methods generally only use certain technical parameters of the chassis as design variables, and take the dynamic test parameters of one or several operating states of the vehicle as the objective function. In the robust design, only installation errors, manufacturing errors, etc. are considered. Uncertain

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  • Automotive chassis technical parameter robust design method based on full life circle
  • Automotive chassis technical parameter robust design method based on full life circle
  • Automotive chassis technical parameter robust design method based on full life circle

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Embodiment Construction

[0013] The best implementation mode of the present invention will be described below in conjunction with the accompanying drawings.

[0014] 1. Design Entry

[0015] First input the basic parameters of the vehicle, mainly including the wheelbase, wheel base, kingpin center distance, load, position of the center of mass, main parameters of the tires, and chassis technical parameters: steering mechanism, driving system, braking system Initial value and definition domain, noise factors in automobile use: load, braking force, initial value and definition domain of steering torque, etc.

[0016] 2. Determine the best virtual prototyping model

[0017] Based on the input basic parameters of the whole vehicle, the assembly of the steering system, braking system, driving system and other modules is automatically completed by using the parametric virtual prototype model. The modules are divided as follows

[0018] serial number module name Submodule code structure typ...

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Abstract

The invention provides an automotive chassis technical parameter robust design method based on a full life circle. The method comprises the following steps that (1) finished automobile parameters are input; (2) an optimal virtual prototype model is determined; (3) a mathematical model is built, wherein design variables include a controllable variable, an environmental noise factor and dynamics test parameters; (4) individual performance preferences are determined, and after the individual performance preferences are aggregated in a layered mode, an optimal robust solution is obtained through an overall performance preference function; (5) the design result is verified. Compared with the prior art, the automotive chassis technical parameter robust design method based on the full life circle has the advantages that the various information parameters in the development design stage, the manufacturing stage and the usage stage serve as the design variables, the optimal robust solution is obtained through the overall performance preference function formed by aggregating all the individual performance preferences, and optimal performance and robust performance of the full life cycle of an automotive chassis are ensured. In addition, an optimal chassis prototype model determined through simulation comparison serves as a design platform, and optimality of a chassis structure type is ensured.

Description

[0001] Technical field: [0002] The invention relates to a method for designing an automobile chassis, in particular to a robust design method for an automobile chassis, belonging to the technical field of automobile design. Background technique: [0003] In the current design of automobile chassis, empirical method, comparative method, and method based on chassis single-system or multi-system integrated design are generally adopted. The empirical method is mainly to design certain technical parameters of the chassis based on empirical formulas; the comparative method is mainly to compare and analyze with reference models to determine relevant technical parameters; the design method based on chassis single system or multi-system integration optimization is mainly based on the chassis Steering system, suspension system, braking system and other systems or multiple systems are optimally designed or robustly optimized for the platform. These methods generally only use cer...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 张蕾董恩国关志伟
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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