Precision Measurement Of The Characteristic Parameters Of The Rotary Body Mass

With the development of science and technology, not only the flight velocity of flying objects becomes higher, but also the flight distance increases rapidly. not to that extent, the range of the dimension variation of flying objects becomes much more wider and the requirement for the precision to hit target also becomes more and more rigorous. During the procedure of long-distance high-speed flight of flying objects, the measuring precision of the mass characteristic parameters is vital to the flight stability, controllability, maneuverability, hit rate of flying objects.Because the internal structure of high-speed long-range flying objects (HSLRFO) is so complicated and the mass distribution is extremely non-uniform, the precision of the mass characteristic parameters obtained from theoretical calculation is not enough to be applied to the practical measurement and control. The special test system for the mass characteristic parameters of high-speed long-range flying objects, therefore, is in great need and it is also necessary to study its performance.The mass characteristic parameters of HSLRFO include mass, mass center, centroid, lateral misalignment of mass center, rotary inertia, dynamic balance, etc. Since the lateral misalignment of mass center is the most important mass characteristic parameter, the demand for the measuring precision of this parameter is very stringent.Base on the analysis and comparison of the existing measuring methods and the test systems of the mass characteristic parameters for the HSLRFO at home and broad, an effective measuring method is developed and a reasonable measuring program is also presented, to improve the measuring precision of the mass characteristic parameter of high-speed long-range flying objects.The 3-D molding function of UG is used to design the mechanical parts of the test system, and the motion mode and path of the movable mechanical parts is also simulated with the software of UG. Then, to obtain the working performance data of the control system of the test system, the operation mode and the auto control method of the test system is emulated with Matlab. Based on the emulation results, the program the...