本程序代码通过AVR ATmega88单片机运行PID运算算法，对于智能化的跟踪控制是必不可少的，输出可通过PWM输出控制电机或者两位输出控制继电器输出，都能达到非常好的控制效果。(This program code through the AVR ATmega88 microcontroller operation PID algorithm, for intelligent tracking control is essential, the output can be output through the PWM control motor or two bit output control relay output, can achieve very good control effect.)