火箭撬试验长直轨道测量控制网的建立及精度分析
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1.湖北工业大学机械工程学院武汉430068;2.湖北省现代制造质量工程重点实验武汉430068; 3.航空工业北京长城计量测试技术研究所北京100095

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TH711;TN206

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国家重点研发计划“制造基础技术及关键部件”专项(2019YFB2006100)、湖北省创新群体项目(2022CFA006)资助


Establishment and precision analysis of long-straight track measurement control network for rocket sled test
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1.School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China; 2.Hubei Key Laboratory of Modern Manufacture Quality Engineering, Wuhan 430068, China; 3.AVIC Beijing Changcheng Institute of Metrology & Measurement, Beijing 100095, China

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    摘要:

    火箭撬试验在航空航天、兵器、电子、核武器研制中具有重要的试验价值,为了建立轨道测量控制网、实现火箭撬试验中时空位置参数的测量,本文提出了一种基于边角混合交汇平差模型的组合测量方法。首先,构建了基于全站仪测角信息与激光跟踪仪测距信息的混合交汇平差模型,定义了构建测量误差矩阵的原则,并采用非线性最小二乘法对全局坐标进行了最优估计;其次,采用蒙特卡洛法对测量设备布局和混合交汇平差模型的精度进行了仿真分析,仿真结果表明,测量设备布设在测量范围内的中间位置,可使整体位置标坐标测量误差达到最小,进一步减小平差模型中初始值误差,提高模型解算精度;最后,在某火箭撬试验场地进行了实验验证,在669 m的测量范围内,整个轨道测量控制网的位置标距离标准差为0.19 mm,验证了长直导轨测量中边角混合平差模型的可行性,该方法对全量程测量任务具有重要参考价值。

    Abstract:

    Rocket sled tests hold significant experimental value in the development of aerospace, weaponry, electronics, and nuclear weapons. To establish a precise measurement control network for the track and accurately obtain the spatiotemporal parameters during rocket sled tests, a combined measurement method based on a distance-angle mixed intersection adjustment model is proposed. Firstly, a mixed intersection adjustment model was constructed utilizing angle measurements from total stations and distance measurements from laser trackers. Principles for constructing the measurement error matrix were defined, and the global coordinates were optimally estimated using a nonlinear least squares method. Secondly, the Monte Carlo method was employed to simulate and analyze the measurement equipment layout and the accuracy of the mixed intersection adjustment model. Simulation results indicated that positioning the measurement equipment centrally within the measurement range minimized the overall coordinate measurement errors of position markers, thereby reducing initial value errors in the adjustment model and enhancing the model’s solution accuracy. Finally, experimental verification was conducted at a rocket sled test site. Within a measurement range of 669 m, the standard deviation of the position marker distances in the track measurement control network was found to be 0.19 mm, validating the feasibility of the mixed intersection adjustment model for long straight track measurements. This method offers significant reference value for full-range measurement tasks.

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张昊,熊芝,赵子越,钟陈小鹏,李春森,翟中生.火箭撬试验长直轨道测量控制网的建立及精度分析[J].电子测量与仪器学报,2024,38(10):88-96

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  • 在线发布日期: 2024-12-16
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