CAJ | 학술논문

稳定平台光电系统设计常用线性斯特林制冷机以达到振动小的要求，但以牺牲重量、尺寸、功耗为代价。旋转式制冷机功耗低、尺寸小却振动大；设计平行轴布置斯特林制冷机以减小旋转制冷机对稳定平台的振动影响。分析了旋转制冷机振动源与稳定平台框架的系统刚性特点；从系统耦合的角度，通过力学模型分析平行轴布置斯特林制冷机振动源叠加的情况，根据分析结果提出利用稳定平台刚度高的方向吸收制冷机翻倒力矩的激励，降低平台的抖动程度。最后指出平行轴布置斯特林制冷机与框架结合应用的合理性与可行性。
은정평태광전계통설계상용선성사특림제랭궤이체도진동소적요구，단이희생중량、척촌、공모위대개。선전식제랭궤공모저、척촌소각진동대；설계평행축포치사특림제랭궤이감소선전제랭궤대은정평태적진동영향。분석료선전제랭궤진동원여은정평태광가적계통강성특점；종계통우합적각도，통과역학모형분석평행축포치사특림제랭궤진동원첩가적정황，근거분석결과제출이용은정평태강도고적방향흡수제랭궤번도력구적격려，강저평태적두동정도。최후지출평행축포치사특림제랭궤여광가결합응용적합이성여가행성。
IR imaging system on stabilized platform with gimbals is usually designed employing the linear cryocooler for small vibration. These systems trade off weight,size,and input power. Common rotary Stirling coolers take on bigger vibration than that of linear cooler though more efficient. The rotary cooler possessing parallel-axis layout could have a small effect on platform with high efficiency. This paper depicts the sources of self induced vibration and the characteristic of the stabilized platform. The rotary Stirling cooler is designed according to gimbals. Overturning moment can be coun-tered by the bearings in platform,and then the payload jitter smaller. The new rotary Stirling cooler is compatible with the stabilized platform.