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犁体外载六分量测力传感器由于体轻巧,无磨擦,频响宽等优点而被认为是一种较好的空间测力装置。但目前还存在着垂直分量灵敏度较低和各分量间相互“影响”较大等问题。本文对这两个问题,在结构设计、工艺、贴片和静标定等方向做了一些初步探讨。目前已使垂直分量的灵敏度提高到0.76με/kg、互“影响”值不大于±7％。文中并对进一步提高灵敏度和降低互“影响”值以提高其测试精度做了一些初步分析。传感器经过在第一拖拉机厂试验场一次考验性实测(约1400米),使用商丘330犁由东方红——40拖拉机悬挂,由于耕深较深(达28.68cm)在东方红—40前又加了一台东方红——60拖拉机共同牵引。实测后检查传感器未发现异常。
Plow body with six-component load cell light weight, no friction, wide frequency response and is considered as a better space force measurement device. However, there are still some problems such as low sensitivity of the vertical component and “mutual influence” among the components. In this paper, some preliminary discussions are made on these two issues in the aspects of structural design, technology, patch and static calibration. At present, the sensitivity of vertical component has been increased to 0.76με / kg, and the mutual influence is not more than ± 7%. In this paper, some preliminary analyzes are made on how to further increase the sensitivity and reduce the mutual “influence” values to improve their testing accuracy. The sensor was tested at the first tractor factory test site (about 1400 meters). The Shangqiu 330 plow was hung from the Dongfanghong-40 tractor. Since the depth of cultivation was deep (up to 28.68cm), it was added before Dongfanghong-40 A Dongfanghong - 60 tractor co-traction. After the test sensor was not found abnormalities.