静不稳定机械式衡重台力学分析和校准方法

为解决机械式衡重台因静不稳定性难以校准的问题，分析机械式衡重台的测量原理和力学特点，提出机械式衡重台校准方法，通过减少机械式衡重台非平衡状态下载重架的最大偏转角度，实现校准时的测量不确定度控制，保障校准结果的准确性。利用该方法对机械式衡重台进行校准，并开展测量不确定度分析，结果表明扩展不确定度U=84 g(k=2)，验证了该方法的有效性。研究成果对于促进水下航行体产品力学计量领域的发展具有积极作用，为水下航行体产品试验研究提供了有力支撑。

Mechanical analysis and calibration method of statically unstable mechanical weighing table

In order to solve the problem that mechanical weighing table is difficult to calibrate due to static instability, we have analyzed the measuring principle and mechanical characteristics of the mechanical weighing table and proposed the calibration method of the mechanical weighing table in this paper. By reducing the maximum deflection angle of the weight frame of the mechanical weighing table under non?equilibrium state, the measurement uncertainty can be controlled during calibration and the accuracy of calibration results can be guaranteed. The method is used to calibrate the mechanical weighing table and analyze the measurement uncertainty. The results show that the extended uncertainty U = 84 g (k = 2), which verifies the effectiveness of the method. The research results have a positive impact on promoting the development of the mechanical metrology of underwater vehicle products, and provide a strong support for the experimental research of underwater vehicle products.