The maximum power of photovoltaic battery has always been an important issue of concern in the field of photovoltaic power generation.Nonlinear features of the output characteristics of photovoltaic cells decide that the maximum power point varies all the time.To this end,this paper proposes an improved disturbance observation method.Upon first appearance of saltus,namely,when the former moment after the power is greater than the moment,the system uses fuzzy control method to track the maximum power point.B...