According to the difference equation , the continuous control system is translated into the discrete control system . simulation results indicate the discrete fuzzy control system using of c - s function has the same result with the continuous fuzzy control system , so the discrete fuzzy control system is successful 將連續(xù)控制器按照一階后向差分方法離散化,并利用simulink的c - s函數(shù)編程技術(shù)建立離散模糊pid控制系統(tǒng),仿真結(jié)果和連續(xù)控制系統(tǒng)結(jié)果基本一致,表明離散化模糊pid控制器是成功的。