提高植物几何参数测量仪精度的研究

Research on improving the precision of plant geometrical parameter instrument

针对植物几何参数测量仪中原理误差的问题,建立了几何参数测量仪的实际传动特性方程,通过与理论的线性模型比较获得了仪器的原理误差函数式,分析了测量时接触变形误差对测量结果的影响问题,并在此基础上提出了减小原理误差的方案,借助数值分析方法,以增加测量臂长为例论述了减小原理误差的方法。研究结果表明,该方法具有广阔的推广应用前景。

Aiming at instrument theoretical error of plant information, the equation of actual transmission characteristics for plant leaf thickness instruments was established. The theoretical error function of the instrument was obtained. By the comparison be- tween the equation and the theoretical linear model, the problem of the affection from the errors of contact deformation to the sur- vey results was analyzed. A scheme which was to reduce theoretical error was put forward on the basis of above work, with the aid of the method of numerical analysis, the method that reduced the theoretical error was discussed by the example of increasing the length of measurement arm. The experimental results show that the method has wide prospect in the future.