The Sensitivity Analysis and Optimization of the Constructive Para■eters of the Rock-wool Rotor Shi Xin Ruan BiaoOptimition techniques are employed to design the constructive and bearing parameters of Rock-wool Rotor for minimum unbalance respose of the rotor.At first,upon the experi- ment result,the dynamic model of the rotor has been set up.The sensitivity analysis of the constructive parameters through the model has been carried out to shown the influence of the parameter on the response and the dynamic characteristic of the rotor.The reasonable design variable,aim and the method of optimum have been chosen by synthetic analysis and test. The analysis and discussion of the practical rotor have been carried out,which provided the basis for design of the machine.Rotor;;Rock-wool;;Sensitivity;;Optimizition