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大型輪式收獲機(jī)械轉(zhuǎn)向輪定位參數(shù)完整解算
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十二五國家科技支撐計(jì)劃資助項(xiàng)目(2011BAD20B01)和中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(2013QJ018)


Calculation of Parameters of Steering Wheel Alignment for Large Wheeled Harvesters
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    摘要:

    基于多體動(dòng)力學(xué)理論,研究建立了一套適應(yīng)于大型輪式收獲機(jī)械特點(diǎn)的轉(zhuǎn)向輪定位參數(shù)完整解算模型。分別從轉(zhuǎn)向梯形優(yōu)化設(shè)計(jì)和整機(jī)穩(wěn)態(tài)響應(yīng)特性兩個(gè)層面,對所建立的完整解算模型與傳統(tǒng)的簡化模型進(jìn)行了對比分析。由分析結(jié)果可知,傳統(tǒng)的轉(zhuǎn)向梯形優(yōu)化設(shè)計(jì)模型在車輪偏轉(zhuǎn)角較小時(shí)與完整解算模型的分析結(jié)果相近,但在車輪偏轉(zhuǎn)角較大時(shí),2個(gè)模型的分析結(jié)果差距較大。另外,通過理論分析和實(shí)驗(yàn)驗(yàn)證表明,傳統(tǒng)的簡化單軌模型在描述大型輪式收獲機(jī)械穩(wěn)態(tài)響應(yīng)特性時(shí)具有一定的局限性,所建立的轉(zhuǎn)向輪定位參數(shù)完整解算模型可以更精確地描述其穩(wěn)態(tài)響應(yīng)特性。

    Abstract:

    A specific mathematical model to obtain the parameters of steering wheel alignment for large wheeled harvesters was proposed in light of multi-body dynamics technique. A comparison between the proposed model and the traditional ones was made in terms of the optimization design of steering geometry and the performance of steady-state cornering response. Results showed that both models could reach a similar computing value in the small range of steering angles. However, for large steering angles, the proposed one was more appropriate to express the steering characteristics. Through theoretical analysis and experiment validation, it was limited to adapt traditional simplified bicycle model to depict handling stability of large wheeled harvesters. Therefore, the proposed model demonstrated its unique accuracy in the calculation of parameters of steering wheel alignment for large wheeled harvesters.

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李皓,謝斌,呂黃珍,毛恩榮,朱忠祥,宋正河.大型輪式收獲機(jī)械轉(zhuǎn)向輪定位參數(shù)完整解算[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(Supp2):273-277. Li Hao, Xie Bin, Lü Huangzhen, Mao Enrong, Zhu Zhongxiang, Song Zhenghe. Calculation of Parameters of Steering Wheel Alignment for Large Wheeled Harvesters[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(Supp2):273-277.

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  • 在線發(fā)布日期: 2013-10-21
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