Establishment of a Certain Aero-Engine Starting Mathematical Model in Plateau Regions

The starting of a certain aero-engine in plateau regions has been very dangerous and complex.In order to establish its mathematical model,this paper presents an improved variable memory length algorithm based on wavelet transform multi-resolution analysis method.This method decomposes data into different frequency segments,in which different memory lengths are used to identify parameters.The starting model can thus be thus formulated,which provides theoretical reference for starting test in plateau regions.