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红外成像制导武器对抗是光电对抗的重点领域。在红外成像制导对抗数字图像注入式闭环半实物仿真试验时,由于红外导引头传感器被图像生成和图像注入计算机取代不参与工作,需要建立准确的导引头伺服控制系统的传递函数模型,进行仿真实验和实际工作两种情况下导引头控制回路性能的等效性分析。基于此,结合某型红外成像导引头的结构组成特点,将导引头划分为七个不同的功能模块,提出了导引头伺服控制系统建模的总体设计方法。采用机理建模和实验测试结合的方法建立了该型导引头完整的伺服系统模型,导引头在幅值5°,频率2 Hz弹体正弦扰动下的光轴能够保持稳定,经过测试,导引头实际输出弹目视线角和角速率能够高精度稳定跟踪真实的弹目视线角和角速率,结果验证了伺服控制系统数学模型的准确性。研究成果为同类设备伺服系统的建模和红外成像制导武器对抗图像注入式闭环仿真测试实验提供了方法和模型支持。
Infrared imaging guided weapons confrontation is the focus of optoelectronic confrontation. In the IR imaging guidance against the digital image injection closed-loop semi-physical simulation test, because the infrared seeker sensor is replaced by the image generation and image injection computer does not participate in the work, we need to establish accurate transfer function model of seeker servo control system Equivalence Analysis of Seeker Control Loop Performance under Simulated Experiment and Practical Work. Based on this, combined with the structural characteristics of a certain type of infrared imaging seeker, the seeker is divided into seven different functional modules, and the overall design method of seeker servo control system modeling is proposed. A complete servo system model of the seeker is established by combining the mechanism modeling and experimental testing. The optical axis of the seeker can be kept stable under the sinusoidal disturbance of amplitude 5 ° and frequency 2 Hz. After testing, The actual visual angle and angular velocity of the seeker can accurately track the true sight angle and angular rate of the projectile with high accuracy. The result proves the accuracy of the mathematical model of the servo control system. The research results provide a method and a model support for the modeling of similar equipment servo system and infrared image guided weapon against image injection closed-loop simulation test.