手推式电子叉车秤倾角与称重误差补偿算法研究

针对电子叉车秤在使用过程中出现的车体倾斜导致称重误差精度下降等问题，提出了一种有效的称重误差补偿算法。首先，分析电子叉车秤倾斜角度对称重性能的影响，搭建一个多方向可变角度倾斜的实验平台，以模拟叉车秤的倾斜状态并获取精确的称重数据。其次，根据所获得的数据与称重误差补偿原理，建立倾斜状态下电子叉车秤的称重误差补偿算法模型，并运用最小二乘法及多层感知机非线性回归方法识别模型参数。最后，本文对具有1 500 kg量程和0.02 kg感量的电子叉车秤进行了倾斜测试实验，结果表明，在地面倾角不超过1.5°的范围内，在任意倾斜方向仪器最大允许误差MPE<0.75 kg,具有3 000分度数的精度。

Research on electronic hand pallet truck forklift scale tilt angle and weighting error compensation algorithm

To address the issue of low weighing accuracy caused by the tilt angle of the scale body during the use of electronic hand pallet truck forklift scales, a multi-directional variable-angle tilt simulation and measurement experiment platform was constructed to simulate the different tilt states of the forklift scale. By analyzing the weight and tilt angle change data measured by the experiment platform, a compensation algorithm model for the weighing error of the electronic forklift scale under the tilt state was established, and the model parameters were identified using both the least squares method and the multilayer perceptron non-linear regression. The compensated forklift scale with a range of 1 500 kg and sensitivity of 0. 02 kg was tested under tilt experiment, and the results showed that within a ground tilt angle not exceeding 1. 5°, the instrument achieves an accuracy of 3 000 divisions with a maximum permissible error (MPE) of less than 0. 75 kg in any tilt direction.