Steady design method for vehicle steering trapezoid mechanism

A technology that turns to trapezoidal, robust design, used in computing, special data processing applications, instruments, etc.

Inactive Publication Date: 2012-03-28
TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The problem that the present invention can solve is to overcome the deficiencies of the background technology, comprehensively consider the synergy of the steering system and the suspension system, combine the steering state of the vehicle and the two states of the wheel runout,

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  • Steady design method for vehicle steering trapezoid mechanism
  • Steady design method for vehicle steering trapezoid mechanism

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Embodiment Construction

[0006] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0007] (1) Vehicle modeling and dynamic analysis

[0008] ADAMS software is used to establish a parametric rigid-flexible coupling simulation model of the whole vehicle including suspension system, steering system, driving system and other subsystems, in which the steering tie rod is a flexible body. Analyze the dynamic characteristics (including stress, wheel rotation angle, and front wheel swing angle) of the steering mechanism of the vehicle steering (from static to the maximum limit angle) and wheel jump state (amplitude ±40mm). Such as figure 1 Middle module ①.

[0009] (2) Optimum Design of Automobile Steering Trapezoidal Mechanism

[0010] Considering the coordination relationship between the suspension system and the steering system, based on the dynamics simulation data, the second-order response surface mode...

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Abstract

The invention relates to a steady design method for a vehicle steering trapezoid mechanism. The method comprises the following steps of: based on multi-body system dynamics theory, applying methods, such as a virtual model machine technology, multi-body dynamics, elasticity mechanics, steady design and the like, comprehensively considering a synergic relationship between a steering system and a suspension system, analyzing dynamics characteristics of the steering trapezoid mechanism under operating conditions, such as vehicle steering, vehicle wheel jumping and the like, and integrating uncertain factors impacting on a steering angle and a steering mechanism stress, such as a manufacturing error of a steering tie rod, a manufacturing error of a steering knuckle arm, an assembling error of a steering node, fit clearance between the steering mechanism and the suspension system, elastic deformation of the tie rod, and the like. An optimizing aim that corner error during the steering process is minimum, and a swing angle for a front wheel during vehicle jumping is minimum can be achieved, and a steady design model for the vehicle steering trapezoid mechanism is built. The steady design method has the advantages that: a design level of vehicle front wheel parameters can be improved, and the method can be widely applied to vehicle design with various types.

Description

Technical field: [0001] The invention relates to a robust design method for an automobile steering trapezoidal mechanism. Product technology includes multi-body dynamics, virtual prototype technology, optimal design, elastic mechanics, robust design and other technologies. Background technique: [0002] At present, the optimal design of the steering trapezoidal mechanism at home and abroad generally adopts the conventional deterministic optimal design method, without considering the influence of uncertain factors such as errors in the manufacturing process and assembly process of the steering mechanism. In addition, in the automobile steering trapezoidal mechanism, the kinematic pair needs a certain gap, and the gap increases due to wear, deformation and other reasons, resulting in an uncertain error in the steering angle of the steering mechanism. In the design of the steering trapezoidal mechanism, only the stress under the steering state of the vehicle is generally consi...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 董恩国张蕾石传龙邢艳云
Owner TIANJIN UNIV OF TECH & EDUCATION TEACHER DEV CENT OF CHINA VOCATIONAL TRAINING & GUIDANCE
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