微机在机场坡度灯控制中的应用

The Application of Microcomputer in the Control of Airdrome's Grading Light

介绍了由恒流调光器、升压变压器、隔离变压器、坡度灯角度控制器等构成的机场坡度灯控制系统。系统恒流调光器以80C196为核心计算摸块，其高速输入/输出作为可控硅相位同步和触发信号，10位A/D转换器作为系统电流电压输入接口。并通过变参数PI数字电流控制器构成电流闭环系统。同时，给出了以80C196汇编语言实现的，根据采样周期进行软启动或变参数PI控制的软件程序框图。

The control system of grading light in airdrome that consists of constant-current modulator for light, setting-up transformer, isolating transformer and angle controller of grading light is introduced. The constant-current modulator based on the microprocessor 80C196, and its high-speed input and output used as silicon controlled phasing synchronization and triggering signal, and its A/D converter (10 bit) used as the input interface of current and voltage is presented. The current closed-loop system is composed of current controllers that control variable parameter PI. The block diagram of the system software that the soft start-up and the variable parameters PI control is realized with assemble language 80C196 according with sampling period is given out.