摘要
PID电路在信号运算处理和经典控制实现等方面应用非常广泛。从模拟PID发展到数字PID和软件PID,其可控性与精度不断完善和提高。模拟PID电路由于其电路结构特点,既有PID运算处理和控制功能(时域特性),又有信号频率处理与补偿功能(频域特性),在学习与应用中应加以理解和辨识。
With an extensive application in signal computation processing and typical controlling realization, the PID circuit experienced developmental stage from analog PID to digital PID and software PID, its controllability and precision acquired increasingly improvement and perfection. Owing to its circuit characteristics in computation processing and controlling （time domain） as well as the signal frequency processing and compensation （frequency domain）, thus comprehension and identification should be paid in learning and application.
关键词
模拟PID
时域特性
频域特性
Analog PID
Time Domain Characteristics
Frequency Domain Characteristics
