目的 探讨利用压电薄膜聚偏二氟乙烯(PVDF)实现仿生肌电假手的触滑觉功能。方法 分析压电材料PVDF的特点和压电特性,研究由PVDF构成的触滑觉传感器的信号产生原理及其在肌电假手上的实现,设计压电信号调理电路和PVDF触滑觉反馈控制系统,制成实验样手,进行触滑觉功能实验。结果 与结论 本文采用的触滑觉反馈方法,反馈信号特征明显,效果良好,实用可靠。
Objective To realize the tactile and slip sensory functions for electromyogram controlled prosthetic hand. Methods The piezoelectric membrane polyvinylidence floride (PVDF) was used to construct a transducer for the tactile and slip sensory feedback. The feature and piezoelectric response of PVDF and its mechanism of signal production were studied. The feedback control system was designed and a prototype for testing the tactile and slip sensor function was constructed and tested. Results and Conclusion The signal response of PVDF sensor is obviously, and the PVDF sensor can be used in practice.
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