基于伺服驱动的离心式动态力校准装置

Centrifugal Dynamic Force Calibration Device Based on Servo Drive

为提高准静态环境使用的力传感器校准精度,研制了基于伺服驱动的离心式动态力校准装置。该装置利用直驱伺服电机驱动和控制质量块做离心运动,通过去轴承设计的动力传动机构输出量值可控的动态力;建立了动力学模型并得到了实验验证;进行了测量重复性和动态响应性能实验研究。实验结果表明,校准装置在中高转速下测量重复性优于1%,能在0.242s内加速到额定转速500r/min,且输出力值可达到3.8kN。

To improve the calibration accuracy of force sensors used in quasi-static environment,a centrifugal dynamic force calibration device based on servo drive was developed. The device had a direct drive servo motor to drive and control the mass block for centrifugal motion,and outputted controllable dynamic force through bearingless transmission mechanism. The dynamic model was established and validated by experiments,and the measurement repeatability and dynamic response performance were experimentally studied. The experimental results showed that the repeatability of the calibration device was better than 1% at medium and high rotational speeds,and the calibration device could accelerate to the rated speed 500 r/min and output 3. 8 k N force in 0. 242 s.