PI control and fuzzy control are compared on the index of ITAE and COP, the energy-saving principle of fuzzy control is elaborated.

• 应用此方法对变频空调器采用模糊控制与常规PI控制的ITAE、op、温精度等指标进行对比研究，揭示了模糊控制适应负荷变化能力强、能的机理。