Keeprich T. Methods and models of surge effects protection in the gas-turbine engine control system

The dissertation is devoted to develop surge effects protection methods and models for the automatic control system of engine (ACSE). The surge diagnosing method on the base of wavelet-analysis and S discriminant is proposed. It allows detecting of gas-instability growth with high validity level. The transient process model of "stable engine behavior - stall surge" is given. It emerges gas-dynamic stability loss before DOL on 250 ms. Specified methods and model are formed the surge diagnosis module, that combined with regulative components generates model of surge prevention module in the ACSE. Effectiveness of developed methods and models is vindicated by the results of their implementation.