联合整地机平整部件参数优化

Parameters Optimization on Flattening Component of Combined Cultivating Implement

为了确定联合整地机平整部件的关键参数,对其进行田间试验,以作业速度、合墒盘直径和合墒盘偏角为影响因素,地表10 cm内碎土率为响应指标,采用3因素3水平的响应曲面分析试验,并通过Design-Expert软件建立指标与因素之间的回归方程,进行参数优化,得出最优参数组合为:作业速度10.63 km/h、合墒盘直径450 mm、合墒盘偏角17.71°,此时碎土率为91.92%,符合农艺要求。

In order to determine the key parameters of the flattening component on combined cultivating implement,the field experiment was conducted by using the flattening device.The three factors and three levels orthogonal regressive tests were designed in the experiment with working velocity,diameter of the field-ditch filling disc,angle of the field-ditch filling disc as influence factors and the soil-breaking rate as response index.The regression mathematics models between response index and influence factors were established and the parameters were optimized through Design-Expert.The optimal combination was that working velocity of 10.63 km/h,diameter of the field-ditch filling disc of 450 mm,angle of the field-ditch filling disc of 17.71°.At that time the soil-breaking rate was 91.92%,which could meet the needs of agricultural demands.