介绍了某机载雷达伺服系统，对其工作原理、基本结构、控制方案、驱动技术等进行了分析探讨。设计了无刷直流电动机PWM控制器、角位置检测等硬件电路以及位置、速度、电流三环控制系统。实验结果表明，该系统通过硬件和软件的合理设计，具有较好的动、静态性能。

An airborne radar servo system is introduced in the paper, and the principle, structure, control scheme, drive technology of the system are analyzed. PWM controller, angle position detection circuit, the position and speed -current close-loop control system for brushless DC motor are designed. Experiment result indicates that the system has good dynamic and static performance with the rational design of hardware and software.

TN820.3