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Research Papers

Reliability Sensitivity Analysis for Rack-and-Pinion Steering Linkages

[+] Author and Article Information
Xianzhen Huang

School of Mechanical Engineering and Automation, Northeastern University of China, Shenyang, Liaoning 110004, P. R. Chinaxzhhuang83@gmail.com

Yimin Zhang1

School of Mechanical Engineering and Automation, Northeastern University of China, Shenyang, Liaoning 110004, P. R. Chinaneu831109@yahoo.com.cn

1

Corresponding author.

J. Mech. Des 132(7), 071012 (Jul 07, 2010) (6 pages) doi:10.1115/1.4001901 History: Received September 02, 2009; Revised March 26, 2010; Published July 07, 2010; Online July 07, 2010

In this paper, a reliability sensitivity analysis methodology for the kinematic accuracy of rack-and-pinion steering linkages (RPSLs) is developed. The direct linearization method is applied to obtain the kinematic accuracy errors of planar linkages due to link-length variations. The RPSL widely used in many types of vehicles is chosen as an example to propose an analytical model for reliability analysis of the kinematic accuracy of planar linkages. Furthermore, reliability sensitivity analysis of planar linkages, which is the main focus of this paper, is used to compute the reliability sensitivity of the kinematic accuracy of steering linkages with respect to the statistical parameters (e.g., mean, standard deviation, or higher moments) of the basic errors of random variables. Finally, the practicality and efficiency of the proposed method are demonstrated by a numerical example.

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Copyright © 2010 by American Society of Mechanical Engineers
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Figures

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Figure 8

Reliability sensitivity of the left steering arm with respect to the standard deviations of random variables

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Figure 9

Reliability sensitivity of the right steering arm with respect to the standard deviations of random variables

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Figure 7

Reliability sensitivity of the right steering arm with respect to the mean of random variables

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Figure 6

Reliability sensitivity of the left steering arm with respect to the mean of random variables

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Figure 5

Reliability of the right steering arm

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Figure 4

Reliability of the left steering arm

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Figure 3

Position vector loop for the RPSL

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Figure 2

Cognates of the STO configuration

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Figure 1

Structure sketch of RPSLs: (1) left steering arm, (2) left turn tie rod, (3) right turn tie rod, (4) right steering arm, and (5) rack axis

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