Multi-methods parameter identification and integration for dynamic characteristics of hydrostatic journal bearing

摘要

In order to validate theoretical results and study identification, the tests for dynamic coefficients of a set of hydrostatic journal bearings were carried out by multi-methods parameter identification. After discussing the advantages and disadvantages of existing methods, then the need for the formation of the new method was discussed. Several techniques were researched and brought forward for carrying out the multi-methods parameter identification, including steady and transient excitation technique, high accuracy phrase data processing technique, evaluation technical for identifying stiffness and damping coefficients, and so on A system including software and hardware for testing dynamic characteristics coefficients was developed which can realize the technique as mentioned above. The test results were discussed that there are certain differences in process of technical implementation and testing accuracy when adapting serial testing methods. But, it is accord with the calculation results of the given experiment bearing in progress a method of integration. The accord shows that it is necessary and feasible for stiffness and damping coefficients testing of hydrostatic journal bearing employing multi-methods integration.