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前輪主銷后傾角對(duì)高速轉(zhuǎn)向穩(wěn)定性的影響
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    摘要:

    為提高車輛高速轉(zhuǎn)向時(shí)的行駛穩(wěn)定性，通過建立整車二自由度模型和轉(zhuǎn)向系統(tǒng)力輸入動(dòng)力學(xué)方程，用Routh-Hurwitz穩(wěn)定判據(jù)推導(dǎo)了前輪主銷后傾角與轉(zhuǎn)向穩(wěn)定極限車速匹配關(guān)系計(jì)算式。用樣車進(jìn)行了實(shí)例計(jì)算和試驗(yàn)研究，試驗(yàn)結(jié)果驗(yàn)證了理論分析與計(jì)算式的正確性，表明該計(jì)算式對(duì)前輪主銷后傾角與轉(zhuǎn)向穩(wěn)定車速的關(guān)系有一定預(yù)測(cè)性。

    Abstract:

    To get the match of front wheel caster angle versus steady cornering velocity, exploring for the real ways of improving stability of high-speed cornering, based on the equations of 2 free-degrees vehicle dynamic and steering system, a calculating formula was founded by using the Routh-Hurwitz criterion. A vehicle made in China was used as samples, and according to the formula its caster angle was calculated versus steady cornering velocity. The tests of front tire footprint and steering wheel angle step input were carried out in term of state criterion GB/63232—1994. The tests proved that the formula is characterized by a precision in predicting the match of front wheel caster angle versus steady cornering velocity.

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魏道高,李克強(qiáng),王霄鋒,金達(dá)鋒,楊士欽,梁文芝.前輪主銷后傾角對(duì)高速轉(zhuǎn)向穩(wěn)定性的影響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(7):19-21.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(7):19-21.

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