The Coriolis force method is a recently developed and highly regarded direct measurement technique that enables high-precision measurement of bulk materials. The operational parameters and variations thereof directly influence the measurement accuracy of the equipment. In this study, a measurement correction coefficient is introduced to improve the calculation method for mass flow rate of the materials. The DEM is employed to simulate the motion of particle groups within the Coriolis force scale under different parameters, and the effects of various structural and operational parameters on the measurement results are compared. The research findings indicate that a lower rotational speed leads to more stable instantaneous measurement results, although the measurement error is relatively large. When the rotational speed exceeds 300 rpm, the measurement error remains within 15%. For materials with a radius of 1–2 mm, the variation range of precision error is approximately 0.4%. Among the structural parameters, the radius of the measurement wheel has the most significant impact on the measurement results, wherein a larger measurement wheel radius corresponds to a smaller measurement error. The horizontal angle of the blades follows as the next influential parameter, with a clockwise rotation and a horizontal angle of 30° resulting in a measurement error below 2%.

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基于DEM的科里奥利力标测量过程数值模拟及参数优化

科里奥利力法是一种最近开发的、备受推崇的直接测量技术，能够对散装材料进行高精度测量。运行参数及其变化直接影响设备的测量精度。本研究引入测量修正系数来改进物料质量流量的计算方法。采用DEM模拟了不同参数下科里奥利力标度内颗粒群的运动，并比较了各种结构和操作参数对测量结果的影响。研究结果表明，转速越低，瞬时测量结果越稳定，但测量误差较大。当转速超过300rpm时，测量误差保持在15%以内。对于半径为1~2mm的材料，精度误差的变化范围约为0.4%。在结构参数中，测量轮的半径对测量结果的影响最为显着，测量轮半径越大，测量误差越小。其次是叶片的水平角度，顺时针旋转，水平角度为 30°，测量误差低于 2%。