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为了提高红外探测系统的灵敏度,对一种多元探测红外位标器的振动噪声进行了研究。列举了影响红外信号的噪声类型,分析了振动噪声可能产生的各种原因,建立了振动噪声的传递函数,并提出用减振的方法即隔离弹体振动的方法降低位标器的振动噪声。根据此种位标器的特点,建立了减振系统的数学模型,得到位标器振动模型的微分方程并对该微分方程求解。本文的创新点在于运用拉格朗日动力学方程解决了红外系统的振动噪声问题,并在工程中予以成功应用。
In order to improve the sensitivity of the infrared detection system, the vibration noise of a multi-detection infrared detector is studied. The types of noise that affect the infrared signal are listed. The possible causes of the vibration noise are analyzed. The transfer function of the vibration noise is established. The method of reducing vibration is proposed to reduce the vibration noise of the marker. According to the characteristics of this kind of positioner, the mathematical model of the vibration damping system is established, the differential equation of the vibration model of the positioner is obtained, and the differential equation is solved. The innovation of this paper is to solve the problem of vibration and noise of infrared system by Lagrange dynamic equation and to apply it successfully in engineering.