The Design and Implementation of a Somatosensory Tactile Actuator and the Dynamic Calibration System for Its Output Frequencies
In this study,based on the characteristics of magnetic steel,we developed a somatosensory tactile actuator which could generate constant low-frequency vibration stimulation.Moreover,based on the relationship between input stresses and output voltages of polyvinylidene fluoride(PVDF)membrane working as a piezoelectric film sensor,a dynamic calibration system for stimulators output frequencies was designed later.We could get the actual excitation frequency of actuator based on spectral analysis of the output voltage of PVDF membrane.And so the output frequency of controller could be collected according to the frequency calibration curves ultimately.Experimental results showed that the errors between the expected output frequencies of controller and the actual measured frequencies of the actuator were quite small.The calibration table was given according to the fitting curve in the end.It can be looked forward that the developed actuator would lay a good hardware foundation for carrying out BCI experimental study based on steady-state somatosensory evoked potentials(SSSEPs)next.
Stimulation Tactile vibration Polyvinylidene fluoride Piezoelectric film sensor Dynamic calibration
Hui Wang Bowei Li Aiguo Song Quanjun Song
School of Instrument Science and Engineering,Southeast University,Nanjing 210096,China;Institute of School of Instrument Science and Engineering,Southeast University,Nanjing 210096,China Institute of Intelligent Machines,Hefei Institutes of Physical Science,Chinese Academy of Sciences,H
国际会议
The 2015 Chinese Intelligent Automation Conference(2015中国智能自动化会议)
福州
英文
33-41
2015-05-08（万方平台首次上网日期，不代表论文的发表时间）