基于离心原理的力传感器动态标定系统辨识与分析
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摘要
针对静态校准过的传感器用来测量动态力时,可能会出现较大误差的情况,设计了基于水平正弦力加载的力传感器动态标定装置,动态力由旋转的偏心轮产生。通过分析建立了系统的动力学模型,使用最小二乘辨识方法得到了系统传递函数模型参数,并在多组频率下分别验证模型的准确性。实验结果表明:建立并辨识得到的系统模型可以较好地逼近实际物理系统,并且根据频率改变参数得到的模型比固定参数模型具有更高的精度。
Aiming at the situation that large errors may occur when using static calibrated sensors to measure dynamic forces,a dynamic calibration device of force sensor based on horizontal sinusoidal force is designed. The dynamic force is generated by rotating eccentric. Through analysis,establish dynamics model for system. Least squares identification method is used to obtain system transfer function model parameters,and the accuracy of the model is verified under multiple sets of frequencies. Experimental results indicate that the established and identified system model can be well approximated to the actual physical system,and the model obtained by changing the parameters according to the frequency has higher precision than the fixed parameter model.
Aiming at the situation that large errors may occur when using static calibrated sensors to measure dynamic forces,a dynamic calibration device of force sensor based on horizontal sinusoidal force is designed. The dynamic force is generated by rotating eccentric. Through analysis,establish dynamics model for system. Least squares identification method is used to obtain system transfer function model parameters,and the accuracy of the model is verified under multiple sets of frequencies. Experimental results indicate that the established and identified system model can be well approximated to the actual physical system,and the model obtained by changing the parameters according to the frequency has higher precision than the fixed parameter model.
引文
[1]尹浩,基于正弦力加载的力传感器动态标定技术研究[D].杭州:浙江工业大学,2013.
[2]Kumme R.Dynamic investigations of force transducers[J].Experimental Techniques,1993,17(6):51-53.
[3]Schlegel Ch,Kieckenap G,Glockner B,et al.Traceable periodic force calibration[J].Metrologia,2012,49:224-235.
[4]Yusaku Fujii.A method for calibrating force transducers against oscillation force[J].Meas Sci Technol,2003,14:1259-1264.
[5]郑正.2种不同动态力测量系统的比对结果[J].航空计测技术,1995,15(4):35-38.
[6]Bruns Th,Kumme R,Kobusch M,et al.From oscillation to impact:The design of a new force calibration device at PTB[J].Measurement,2002,32:85-92.
[7]Yusaku Fujii.Toward dynamic force calibration[J].Measurement,2009,42:1039-1044.
[8]Yusaku Fujii.Proposal for a step response evaluation method for force transducers[J].Meas Sci Technol,2003,14:174-1746.
[9]孙金锋,谢殿煌,张训文.气动助推负阶跃力校准装置研究[J].仪器仪表学报,2010,31(2):459-463.
[10]穆欣荣,张志杰,杨文杰,等.基于Lab VIEW的压力传感器动态性能修正[J].现代电子技术,2017,40(8):141-144.
[11]魏娟,张志杰,杨文杰,等.基于QR-PSO算法的压力传感器的动态补偿方法[J].传感技术学报,2017,30(4):550-554.
[12]顾宝栋,陈怀海,申凡.力传感器动态标定及其精度分析研究[J].振动与冲击,2005,24(2):95-98.
[13]王宇,张力,洪宝林,等.正弦力校准中降低质量块振动响应不均匀影响的设计方案[J].振动与冲击,2010,29(7):228-231.
[14]张力.激光干涉法进行正弦力校准研究[J].计量学报,2005,26(4):337-342.
[15]Xie W D,Yin Hao,Shen J S.Review and proposition of new dynamic force calibration method[C]∥The 11 th IEEE International Conference on Electronic Measurement&Instruments,Harbin:Harbin Institute of Technology,2013:469-473.
[2]Kumme R.Dynamic investigations of force transducers[J].Experimental Techniques,1993,17(6):51-53.
[3]Schlegel Ch,Kieckenap G,Glockner B,et al.Traceable periodic force calibration[J].Metrologia,2012,49:224-235.
[4]Yusaku Fujii.A method for calibrating force transducers against oscillation force[J].Meas Sci Technol,2003,14:1259-1264.
[5]郑正.2种不同动态力测量系统的比对结果[J].航空计测技术,1995,15(4):35-38.
[6]Bruns Th,Kumme R,Kobusch M,et al.From oscillation to impact:The design of a new force calibration device at PTB[J].Measurement,2002,32:85-92.
[7]Yusaku Fujii.Toward dynamic force calibration[J].Measurement,2009,42:1039-1044.
[8]Yusaku Fujii.Proposal for a step response evaluation method for force transducers[J].Meas Sci Technol,2003,14:174-1746.
[9]孙金锋,谢殿煌,张训文.气动助推负阶跃力校准装置研究[J].仪器仪表学报,2010,31(2):459-463.
[10]穆欣荣,张志杰,杨文杰,等.基于Lab VIEW的压力传感器动态性能修正[J].现代电子技术,2017,40(8):141-144.
[11]魏娟,张志杰,杨文杰,等.基于QR-PSO算法的压力传感器的动态补偿方法[J].传感技术学报,2017,30(4):550-554.
[12]顾宝栋,陈怀海,申凡.力传感器动态标定及其精度分析研究[J].振动与冲击,2005,24(2):95-98.
[13]王宇,张力,洪宝林,等.正弦力校准中降低质量块振动响应不均匀影响的设计方案[J].振动与冲击,2010,29(7):228-231.
[14]张力.激光干涉法进行正弦力校准研究[J].计量学报,2005,26(4):337-342.
[15]Xie W D,Yin Hao,Shen J S.Review and proposition of new dynamic force calibration method[C]∥The 11 th IEEE International Conference on Electronic Measurement&Instruments,Harbin:Harbin Institute of Technology,2013:469-473.