固体火箭发动机点火试验燃面退移最优重建方法研究

Research on the optimal reconstruction method of the combustion surface displacement of SRM Ignition test

摘要:

在固体火箭发动机点火试验中实际测试过程仅能够获得有限的燃面投影数据的背景下,通过在ART 算法基础上对最小化图像进行图像全变分约束,以提高图像边缘重建质量；增加微波CT成像场的磁力线条数,以增加成像信息量,从而实现不同直径固体火箭发动机燃面退移图像最优重建,并以仿真实例对方法进行验证,得出重建数值与实际数值之间的误差小于1mm,符合重建要求,并证明了固体火箭发动机点火试验燃面退移最优重建方法的有效性 。

Abstract:

Based on the background that only limited projection data of combustion surface can be obtained in the actual test process of SRM Ignition test. On the basis of the algorithm, the minimum image is constrained by the total variation of the image to improve the quality of image edge reconstruction; increased the number of magnetic lines of the microwave CT imaging field in order to add the amount of imaging information, so as to achieve the optimal reconstruction of the image of different diameter solid rocket motor"s fire surface displacement. The simulation example is used to verify the method, and the error between the reconstruction value and the actual value is less than 1mm , in line with reconstruction requirements. The effectiveness of the optimal reconstruction method of the combustion surface displacement of SRM Ignition test is proved.