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有目的地影响复合系统的振动特性是开发工程师的现实任务。由于用手动的方式改变系统参数非常麻烦 ,而且仅能有限地获得成功 ,因此推荐采用计算机辅助的方法改变系统的性能。在列出相应的准则公式后 ,采用有限元程序ANSYS将系统进行优化。此时结构参数的可实现范围如质量、刚度和阻尼等 ,以及要求的振动特性 (如固有频率、振幅和衰减时间 )由工程师作为优化的输入给出。建立在力学模型基础上的系统的新结构由优化算法实现。一个坐标测量仪的实例证明了该方法的有效性。
It is a real task for a development engineer to intentionally affect the vibration characteristics of a composite system. Since manual changes of system parameters are troublesome and have only limited success, it is recommended that computer-assisted methods be used to change the performance of the system. After listing the corresponding criteria formula, the finite element program ANSYS is used to optimize the system. The achievable range of structural parameters such as mass, stiffness and damping, etc., as well as the required vibration characteristics such as natural frequency, amplitude and decay time are given by the engineer as optimized inputs. The new structure of the system based on the mechanical model is realized by the optimization algorithm. An example of a coordinate measuring machine shows the effectiveness of this method.