红外成像导引头随动系统建模及仿真

Modeling and Simulating of Tracking System for IR Imaging Seeker

目前红外成像制导武器的随动系统均采用单通道双环(速度环、位置环)结构,对结构虽简单可靠,但也影响了随动系统的响应速度和导弹的跟踪性能,为分析论证成像导引头随动系统采用单通道三环控制的可行性及优越性,建立了单通道三环(电流环、速度环、位置环)控制的随动系统模型,对单通道三环和单通道双环两种模型的时域性能进行了仿真研究,仿真结果表明单通道三环模型与双环模型在稳态误差相同的情况下,前者的动态性能更好,意味着采用单通道三环的成像导引头随动系统会有更快的响应速度。通过分析和建模为成像导引头实现单通道三环嵌套随动系统工程化提供了理论支持。

All tracking systems of IR imaging seeker adopt structure of single channel double loop currently, the structure has advantage of simpleness and good reliability, but at the same time , has disadvantage of restricting the system＇s response speed and missile＇s performance. In order to analyze and demonstrate the feasibility and advantage of tracking system of IR imaging seeker which adopts single channel three loop control（ current loop , speed loop and location loop） ,the model of tracking system of IR imaging seeker is built , then the model of single channel three loop and the single channel double loop is simulated. The result of simulation indicats that three loop＇s dynamic performance is better than that of double loop＇s, and it means that tracking system which adopting three loop works with faster response . The modeling and simulating offer theoretic support for engineering realization of single channel three loop .