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兵工学报 ›› 2020, Vol. 41 ›› Issue (9): 1736-1744.doi: 10.3969/j.issn.1000-1093.2020.09.005

• 论文 • 上一篇    下一篇

火炮高平机参数辨识与灵敏度

林通, 钱林方, 付佳维, 王明明   

  1. (南京理工大学 机械工程学院, 江苏 南京 210094)
  • 上线日期:2020-11-18
  • 通讯作者: 钱林方(1961—),男,教授,博士生导师 E-mail:lfqian@njust.edu.cn
  • 作者简介:林通(1990—), 男, 博士研究生。E-mail:tlin_njust@163.com
  • 基金资助:
    国家自然科学基金项目(11702137); 江苏省自然科学基金项目(BK20170816)

Parameter Identification and Sensitivity analysis of Gun Elevating Equilibrator

LIN Tong, QIAN Linfang, FU Jiawei, WANG Mingming   

  1. (School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China)
  • Online:2020-11-18

摘要: 为准确模拟高平机在火炮发射状态下的动态响应, 基于含气油液压缩模型和油缸膨胀刚度,结合高平机结构构型,建立火炮发射状态下的某高平机动力学模型。采用多体动力学仿真软件ADAMS完成高平机参数化模型建模,确立高平机模型中的待辨识参数。根据某车载炮射击试验数据和火炮发射动力学模型,引入粒子群优化算法对高平机参数进行辨识,获得高平机模型参数值。辨识后模型输出结果与试验数据吻合良好,验证了模型精度及参数辨识结果的有效性。对影响火炮俯仰运动的高平机参数进行灵敏度分析,分析结果表明,高平机油液含气量、油缸初压等若干参数对火炮起落部分俯仰运动的影响较大。

关键词: 火炮, 高平机, 液压油缸, 参数辨识, 灵敏度分析

Abstract: In order to accurately simulate the dynamic response of the elevating equilibrator in the state of gun launch, an elevating equilibrator dynamic model in the state of gun launch is established based on the theoretical model of air-liquid mixtures of hydraulic oil, the cylinder stiffness and the structure of elevating equilibrator. ADAMS software is used to build a parameterized dynamic model of elevating equilibrator, and the parameters to be identified are established. The model parameters are identified using the particle swarm optimization algorithm based on the test data of a vehicle-mounted gun and the gun launching dynamics model. The simulated results agreed with the experimental data, thus verifying the accuracy of the proposed model and the availability of the parameter identification results. The sensitivities of the parameters of elevating equilibrator dynamic model to the pitching motion of gun were calculated.The results of sensitivity analysis show that several parameters, such as air content and initial pressure, have a large impact on the pitching motion of gun.

Key words: gun, elevatingequilibrator, hydrauliccylinder, parameteridentification, sensitivityanalysis

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