current damping
3.A variable parameter Park model is used to analyse turbogenerator operation after loss-of-excitation,in taking account of skin effect due to eddy current within a highly saturated solid rotor,Therefore,the equivalent impedance that represents damping action of solid rotor will be the function of rotor slip.
5.The controller of magnetorheological semi-active suspension system was consisted of drive current control subsystem of magnetorheological damper and mechanical structural fuzzy control subsystem of vehicle, the unsymmetry damping force relation of suspension compress travel and promote travel is solved with coefficient of language-value of damper force output variable.
7.Abstract: By getting the angular displacement change during the time fromits steady rotating to still and using least square method,the numerical control system dynamic feature parameters,such as moment of inertia, load torque, damping coefficient,etc.are estimated.The hardware,software design of measuring angular displacement based on the single-chip microcomputer 8031 and the parameter estimation algorithm procedure based on personal computer are provided.The experimental analysis of semi-closed cycle numerical control system driven by direct current servomotor shows that it is more precise than the traditional calculation result.
