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五軸全輪轉(zhuǎn)向汽車動力學模型分析
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    摘要:

    為提高多軸汽車操縱穩(wěn)定性,，針對五軸全輪轉(zhuǎn)向汽車的高速同相位轉(zhuǎn)向工況,，進行了受力分析，建立了運動微分方程，利用Fiala輪胎模型建立了輪胎的力學模型,，利用LabVIEW軟件建立了整車的動力學仿真程序。通過虛擬試驗仿真分析，發(fā)現(xiàn)采用全輪轉(zhuǎn)向,，可以使后軸車輪較早地參與轉(zhuǎn)向,，從而提高了汽車的轉(zhuǎn)向響應速度,，并使車身側(cè)傾角由

    Abstract:

    7.5°減小為4°。In order to enhance the handling stability of multi-axle vehicle, a mechanical analysis on high-speed inphase steering conditions of five-axle vehicle with all-wheel steering has been done, and the related kinematics differential equations of vehicle with 24 freedom degrees were established, the mechanical model of the tyre has been built based on Fiala-tyre model. Finally, VI sub-function compiled by C language was inserted into LabVIEW graphical codes by MathScript node. The whole vehicle dynamics simulation program has been built based on LabVIEW software. The virtual test simulation results showed that all-wheel steering technology would make rear-axle wheel steer ahead of 0.15 s, and the rear wheel could steer with the front wheel at the same time so that the steering response rate could be improved and the roll angle of vehicle body would be reduced from 7.5° to 4°.

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冷韶華,高利,王樹鳳,朱永強.五軸全輪轉(zhuǎn)向汽車動力學模型分析[J].農(nóng)業(yè)機械學報,2008,39(12):39-44.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(12):39-44.

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