The embedded system has the advantages of real-time, high reliability, small volume and low consumption.The comprehensive performance of the aerial tow target can be improved obviously if the embedded technology is introduced into the design of the height controller.The height controller of the aerial tow target was developed on the basis of ARM7 microprocessor and built-in μC/OS- Ⅱ embedded real-time operating system.The composition, principle, and the design process of the hardware and software are introduced.The results of hardware-in-loop simulation of the principle prototype show that the controller's response is fast, its control accuracy can reach 2 m and it can control the target precisely to execute VLA sea-skimming flheight.It meets the design requirements.%嵌入式系统具有实时性好、可靠性高、体积小和功耗低等优势,将该技术引入新型航空拖靶高度控制器的设计.可显著提高其综合性能.基于ARM7微处理器和μC/OS-Ⅱ嵌入式实时操作系统开发了航空拖靶高度控制器,主要介绍了控制器的组成、原理和软硬件设计过程.原理样机的半实物仿真结果表明系统响应快、控制精度高,能够准确控制拖靶做超低空掠海定高飞行,达到了设计要求,控高精度可达2 m.
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