Abstract：The pressure fluctuation in the flow passage of both impeller and casing is addressed on design condition． The initial conditions for the unsteady turbulent simulation are resulted from the steady calculations， and the three dimensional uns
Abstract-In order to estimate the speed fluctuation band of interior permanent magnet synchronous motor (IPMSM) under speed sensorless control with cyclic fluctuating load accurately, an improved rotor speed estimation method is proposed. A rotor fl
The seal characteristic is an important factor affecting the performance of the rotor system. The nonlinear model of the rotor–seal system is established using Muszynska’s nonlinear seal forces. An efficient and high-precision direct integration sch
