CAJ | 학술논문

为避免载机线振动耦合为光电平台角振动，减小角振动对成像质量和指向精度的影响，对机载光电平台隔振系统进行了分析与研究。针对以往单自由度振动模型仅能分析线振动衰减，无法分析线振动与角振动耦合的缺点，建立了隔振系统的双自由度振动模型，推导出载机线振动与光电平台角振动间的传递函数，分析了减振器刚度、阻尼参数偏差以及减振器布局不合理对振动耦合的影响，为隔振系统的设计和安装提供理论基础。结合工程实际，提出了减小光电平台隔振系统振动耦合的具体措施。
위피면재궤선진동우합위광전평태각진동，감소각진동대성상질량화지향정도적영향，대궤재광전평태격진계통진행료분석여연구。침대이왕단자유도진동모형부능분석선진동쇠감，무법분석선진동여각진동우합적결점，건립료격진계통적쌍자유도진동모형，추도출재궤선진동여광전평태각진동간적전체함수，분석료감진기강도、조니삼수편차이급감진기포국불합리대진동우합적영향，위격진계통적설계화안장제공이론기출。결합공정실제，제출료감소광전평태격진계통진동우합적구체조시。
In order to prevent translational aircraft vibratory disturbances from transforming into quality and accuracy of line??of??sight(LOS),a passive isolation system was analyzed and developed. For the point that angular vibration transmissibility could not be analyzed with the model of single deG gree of freedom,a mathematical model of two degree of freedom vibration isolation system was estabG lished.The transfer function between translational aircraft vibration and rotational responses of optoeG lectronic pod was derived.The coupled vibration in isolation system with stiffness error ,damping erG ror and unreasonable layout were analyzed.These analyses provided theoretic basis for the design and assembly of the vibration isolation system.Finally,combining engineering practices,the methods to reduce angular vibration from aircraft linear vibration were proposed.reduce angular vibration from aircraft linear vibration were proposed.