ESG Rotor Minor Displacement Estimation Using Nonlinear ARX Model
Zhang Sheng-xiu · Chuangan jishu xuebao · 2009
ESG rotor's displacement estimation during large movement range will bring with severe nonlinearity and coupling,which makes the measurement circuit using traditional 3/4 and 4/3 transform fail to estimate its accurate position.The nonlinear ARX models based on wavelet network and sigmoid network are used to design the rotor displacement correction net.Simulation results show the nonlinear ARX model presented could estimate the rotor position accurately,while broadening the linearity range to 75% of nominal gap.The sigmoid network model is realized on the xPC Target platform to testify its real-time capability,which has significance to engineering realization.