【摘要】：基于對新建立的6自由度非線性轉向模型的研究,提出采用傳遞函數(shù)代替原轉向模型的方法,提出求解傳遞函數(shù)的新方法.利用改進的模擬退火算法求解傳遞函數(shù),采用不同的插值法建立傳遞函數(shù)的動態(tài)參數(shù)變化模型,對不同的插值法進行比較.基于得到的轉向傳遞函數(shù)模型,針對現(xiàn)階段獲取理想傳動比方式的缺陷,提出穩(wěn)態(tài)增益理想傳動比動態(tài)精確獲取方法.研究結果表明,轉向傳遞函數(shù)輸出的響應曲線與原系統(tǒng)的響應曲線非常吻合,精度極高,該傳遞函數(shù)能夠替代原先復雜的系統(tǒng);動態(tài)參數(shù)變化模型能夠很好地表征傳遞函數(shù)的參數(shù)隨車速、傳動比和轉向盤轉角的變化關系;理想傳動比的動態(tài)精確獲取能夠實時保證在車速和方向盤不斷變化下轉向增益維持理想的定值.
[Abstract]:Based on the study of the newly established nonlinear steering model with 6 degrees of freedom, a new method of solving the transfer function is proposed by using the transfer function instead of the original steering model. The improved simulated annealing algorithm is used to solve the transfer function. Different interpolation methods are used to establish the dynamic parameter change model of the transfer function and the different interpolation methods are compared. Based on the model of steering transfer function and the defect of obtaining ideal transmission ratio at present, a dynamic and accurate method for obtaining ideal transmission ratio with steady-state gain is proposed. The results show that the output response curve of the steering transfer function is in good agreement with the response curve of the original system and the accuracy is very high. The transfer function can replace the original complex system. The dynamic parameter change model can well describe the relationship between the parameters of the transfer function and the speed, the transmission ratio and the steering wheel angle. The dynamic accurate acquisition of ideal transmission ratio can guarantee the optimal steering gain in real time under the constant change of speed and steering wheel.
【作者單位】： 南京農業(yè)大學工學院;
【基金】：江蘇省科技支撐計劃資金資助項目(BE2012384) 江蘇省科技成果轉化專項資金資助項目(BA2010055)
【分類號】：U463.4

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