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介绍了基于国家标准GB/T7551—2008的称重传感器在室温下静态标定试验,包括该测试系统的组成、试验方法、误差计算方法和试验结果分析。参考称重传感器国家执行标准及性能试验程序,对悬臂梁式称重传感器在室温下进行静态标定试验。运用75%载荷点法计算称重传感器误差,验证其满足1000分度值的要求。采用最小二乘法求最佳拟合直线方程,计算灵敏度、线性度、滞后误差、重复性误差等主要静态特性指标,并对误差结果进行综合分析。 相似文献
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传感器的静态标定及程序 总被引:3,自引:1,他引:2
汤德源 《仪表技术与传感器》1989,(5):26-28
本文介绍了压力传感器的静态标定方法、静态指标的计算原理以及精度计算、特性曲线绘制的计算机程序。该程序用BASIC语言编制,已在SHARPPC——1500微机上通过。 相似文献
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提出了一种测量螺栓预紧力的剪辐式电阻应变传感器,并介绍了其基本构思,结构原理,设计计算及静态特性分析。 相似文献
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介绍了一种基于图形化编程工具LabVIEW的半自动传感器静态特性标定系统的构建方法,主要从系统的总体结构、传感器各静态特性指标的含义及算法的软件实现方法等方面进行讨论.然后以Pt100温度传感器标定为例,阐述了该系统的具体工作流程,并对标定系统进行了误差分析.实际测试结果表明该标定方法快捷有效. 相似文献
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电磁铁试验台CAT系统研究 总被引:1,自引:0,他引:1
本系统将计算机辅助测试技术应用于电磁铁静态特性试验中,便捷的硬件组成与基于VisualC++开发的测试软件相结合,是传统“传感器+函数纪录仪”模式的替代。 相似文献
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本文介绍了在国内外电子吊秤中应用较多的几种不同结构类型的称重传感顺,并根据电子员秤准静态称重方式的特点和要求,着重介绍了某些称重传感器的结构原理、力学特性、受力分析和理论计算。 相似文献
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电子吊秤用称重传感器 总被引:1,自引:0,他引:1
本文介绍了在国内外电子吊秤中应用较多的几种不同结构类型的称重传感器,并根据电子吊秤准静态称重方式的特点和要求,着重介绍了这些称重传感器的结构原理、力学特性、受力分析和理论计算。 相似文献
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针对当前电涡流传感器实际校验中存在的问题,设计开发了一种电涡流传感器全自动动/静态校验仪。介绍了该校验仪的总体架构,给出了硬件结构框图和软件功能界面。与现有的校验设备相比,该校验仪体现了校验过程的全自动化及对校验数据自动生成报表和图形的智能化管理,具有精度高、结构简单、操作灵活、动/静态特性一体化校验的特点。 相似文献
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Lanfeng Yu 《Journal of Mechanical Science and Technology》2008,22(5):829-834
The static stiffness of tower cranes is studied by using the proposed formulations and finite element method in this paper.
A reasonable control value based on theoretical calculation and finite element method is obtained and verified via collected
field data. The results by finite element method are compared with the collected field data and that by the proposed formula.
Corresponding to theoretical formulations and field data, it is found that the results by finite element method are closer
to the real data. 相似文献
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大型船用螺旋桨静平衡检测装置设计研究 总被引:2,自引:0,他引:2
分析了大型船用螺旋桨静平衡的检测现况,将球面静压轴承、电子称重法应用到螺旋桨静平衡检测装置,给出了螺旋桨偏心方位判定方法和静平衡检测的基本步骤,简化了测量过程,改变了以往静平衡采用的刚性支承方式,实现降低摩擦力,提高测量精度的目的. 相似文献
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The results of an analytical investigation are given for the effect of axially grooved floating oil ring seals on the leakage flow and stability of a centrifugal gas compressor. The finite element method was used to solve the non-linear and coupled hydrodynamic and thermal equations for pressure and temperature distributions in the oil seal ring with and without the axial grooves. The peturbation technique was used to obtain the static and dynamic characteristics of the oil seal. The results for selected cases of axial grooving are presented in graphical form for operation at various eccentricities. The non-dimensional leakage flow results correlate well with previously published results calculated by narrow groove theory. The stability of a multi-stage gas compressor is evaluated for different configurations of the oil seal grooving geometry. The compressor rotor shaft finite element model includes a multi-level analysis for the oil seal rings that permits the evaluation of the floating seal influence on the total system stability. Results are given for both low and high-pressure sealing conditions, which simulate test stand and field operating conditions. The results show that the added grooves enhance the stable operation of the rotor system for low-pressure fixed seal conditions arid reduce the system stability at lower eccentricities for low-pressure floating seal conditions. In high pressure conditions the added grooves enhance the stability of the system for both fixed and floating seal conditions. 相似文献
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Various criteria have been used in metal cutting operations to study the effectiveness of cutting fluids; for example, tool-life, wear, temperature and forces; work surface finish; and chip deformation. In each case a number of measurement methods may be employed. This paper describes two very simple means of measurement which have been found useful in cutting fluid research. The first is based on measurement of work surface finish in the direction of cut by determining the amount of pencil lead abraded by the surface under controlled conditions. The second is based on measurement of chip deformation by electrical resistance determination of chips from a known depth of cut. 相似文献
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汽车座椅作为汽车上直接和驾驶者和乘坐人员接触的零部件之一,其舒适度的评价是汽车静态舒适度评价研究的主要问题之一。基于此,介绍了汽车座椅的构成和类型,从主观评价和客观评价方面对汽车座椅静态舒适度进行了详细的分析。收集了大量的文献资料,结合前人的研究成果,并融合了自身创新的见解,对汽车座椅舒适度的改善提出了一些建议,为后续完善汽车座椅舒适度的评价机制提供参考。 相似文献