关键词: 滑动结合面, 动态特性, 参数识别, 响应面法

Abstract:

In allusion to the difficulties to determine dynamic characteristic parameters of sliding joints, and the complexity and large calculation quantity of the current method, a new method combining the response surface and experimental modal analysis was proposed to identify the dynamic characteristic parameters. The sample points were acquired by experimental design to construct the polynomial response surface model. The relative error between the results of the calculated response surface and the actual test was taken as the  objective function. An adaptive simulated annealing algorithm was employed to optimize parameters of the function.Modeling, experiments and parameter identification were conducted with the sliding joints between column guide way and slide carriage of the experimental machine tool. The analytic results indicate that the parameter identification achieves high precision and significantly improves the efficiency.

Key words:  sliding joint, dynamic characteristics, parameter identification;response surface methodology