说明：  常规方法需要系统的模型，这有时是很难做到的，智能控制在此背景下发展起来，模糊控制、神经网络控制、专家系统被视为三种典型的智能控制方法。
(Conventional method requires the system model, it is sometimes difficult to achieve, and intelligent control of development in this context, the fuzzy control, neural network control, expert system be regarded as three typical methods of intelligent control.)