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为有效抑制外界振动对三向静刚度仪测量结果的影响,提高三向静刚度仪固有响应频率,提出了基于HyperMorph形状优化的三向静刚度仪设计方法。以一阶固有频率最大化为目标优化函数,构建三向静刚度仪形状优化模型,通过LabVIEW虚拟技术,利用优化后的三向静刚度仪对车床静刚度进行系统检测,前6阶振动固有频率和LabVIEW软件系统测量表明:优化后的三向静刚度仪的一阶固有频率较优化前明显提高,具有较好的振动抑制性能,且优化后的三向静刚度仪测量更精确。该方法对抗外界扰动的工程结构设计具有实际意义,且利用LabVIEW虚拟技术能够提高实验测试的自动化程度和测试效率。
In order to effectively restrain the influence of external vibration on the measurement results of three-dimensional static stiffness meter and improve the inherent response frequency of the three-direction static stiffness meter, a design method of three-direction static stiffness instrument based on HyperMorph shape optimization is proposed. The first-order natural frequency is maximized as the objective optimization function, and the shape optimization model of the three-direction static stiffness meter is constructed. Through the LabVIEW virtual technology, the static stiffness of the lathe is systematically tested by the optimized three-direction static stiffness meter. The measurement results of the software and LabVIEW software show that the first natural frequency of the optimized three-direction static stiffness meter is obviously improved before optimization, and the vibration suppression performance is better. The optimized three-direction static stiffness meter is more accurate. This method is of practical significance to the design of engineering structure against the disturbances of the outside world, and the use of LabVIEW virtual technology can improve the degree of automation and test efficiency of experimental testing.