Study On Key Technology Of Multi-parameters Testing System For Individual Soldier Weapon And Fire-control System

With the rapid development of photoelectric technology, individual soldier weapon and fire-control system has become a strategic demand of national security, which is dependent high-tech product for anti-terrorism war or local war in the future. Under conditions of high strength electronic warfare, individual soldier weapon and fire-control system, as the Objective Individual Combat Weapon(OICW), combines assault rifle, grenade launcher and fire-control device into one equipment which abandons traditional shooting theory that is aligning visual axis with firing targets and owns many functions such as detecting remote target in day and night, ranging, ambient temperature detecting, automatic range elevating of rifle, automatic shrapnel aiming mark and information output. Individual soldier weapon and fire-control system has been widely used in military field by its advantage of high aiming accuracy. At present performance parameters testing system for individual soldier weapon fire-control system is lag behind, a part of performance parameters is still detected by subjective measurement at shooting range, which cannot meet high performance detection requirements for individual soldier weapon fire-control system at the present stage. Therefore, in view of the present situation of detection method of performance parameters for individual soldier weapon and fire-control system, the research on multi-parameters testing system and relevant key technology for a certain weapon fire control system type’s multi-performance parameters, such as trajectory range elevating calculation accuracy, aiming mark moving precision, aiming mark moving range, ranging precision or maximum ranging distance of fire-control device, muzzle elevating angle measurement accuracy, temperature measurement accuracy, have been carried out, that has important significance for enhancing overall performance of individual soldier weapon and fire-control system.First through researching a large number of domestic and foreign relevant literature materials, the research on the composition and each part function of individual soldier weapon and fire-control equipment has been studied. On this basis, the research background, the purpose and significance of testing system and research status at home and abroad are all summarized. On the basis of studying the hardware in the loop simulation technology, what are given viewing of multi performance parameters detection requirements are general design scheme, technical index, detection system composition and the function of every composition part; The research on the detection principle, detecion process of trajectory range elevating calculation accuracy and the detection principle of aiming mark momentum are mainly studied.Based on angular motion simulation technology, elevation turntable is adopted to simulate the elevating angle of muzzle of firing attitude. According to the technical index, the integral structure of elevation turntable design, motor selection and shating dimension design have been completed. On this basis, the control scheme is also studied; The structure and quality of elevation turntable has been optimized by means of variable density topology optimizaion. By taking the finite element analysis method, deadweight, modal, thermal deformation and frequency response of elevation turntable are all analyzed to guarantee reliability and environmental adaptability of muzzle elevating angle simulation subsystem under field shooting range enviroment.Adopting the method which counter method combines with time transforming into amplitude method, the research on laser aerosol echo distance simulation technology has been studied. The simulation distance will be taken as true range value of trajectory range elevating calculation accuracy detection. For laser range distance simulation, the simulator’s driving circuit of receiving module, ramp delay peripheral circuit and software core programming of high precision time delay module, driving circuit of laser diode in radiation module have been designed; Adopting MODTRAN database and half-wave plate and polarizers, the research on laser aerosol echo power simulation technology has been studied. Based on Echo laser power mathematical model, the power selection of laser diode and collimating objective lens design have been completed. Adopting MODTRAN database determines arbitration testing standard environmental parameters of GJB2241 A, such as visibility distance, temperature, humidity and pressure, according to standard atmosphere environmental parameters, the transmittance will be calculated by MODTRAN. An assemble of half-wave plate and polarizers for precise controlled attenuator realizes the transmittance of simulator’s radiation module of high precision continuous varying in 0~1, combining with frosted glass to realize magnitude and distribution reiteration of laser echo power after atmospheric transmission process.For aiming mark momentum measurement of fire-control aiming device, the measurement mathematical model based on machine vision interpretation has been established. In order to satisfy high resolution demand of aiming mark momentum accuracy detection while keeping large field of view detection demand of aiming mark momentum range detection, CCD camera zoom lens has been designed by ZEMAX after calculated initial parameter of every configuration by MATLAB analysis program; For the distortion phenomenon of hort focus configuration of large field of view, a distortion correct method based on linear characteristics of FOV instrument’s reticle plate is put forward, which takes bending measurement degree as bending measurement function with weight factor that giving each curve line the different weight values in accordance with the distance from the image center as the object function for obtaining the final distortion coefficients. The optimal distortion coefficient is obtained by minimizing the objective function to correct distortion; The research of machine vision recognition of arrow target of fire control aiming device has also been studied.According to-40 oC ~+60 oC operating temperature index of aiming mark momentum measurement, thermal optical characteristic analyze and passive athermal optimization structure of flexible pressing ring are have been studied. The finite element model has been established by meshing hexahedral elements manually, and the influence of RTV on thermal optical characteristic has taken into account. A flexible pressing ring structure realizing passive athermal is proposed and structure parameters of pressing ring is optimized to realizing axial thermal deformation displacement controll. The mirror surface after thermal deformation is fitted by Zernike polynomials and introduces into Zemax to analyses imaging quality of zoom lens under temperature load. Finally, the analysis results and temperature adaptability of zoom lenses are verified through high-low temperature reliability experiments.All detection accuracy of performance parameters detection have been analyzed, and the corresponding verification tests of detection accuracy have been done, the results show that the multi-parameters testing system for individual soldier weapon and fire-control system is accurate and feasible.