关键词: 仿生捕蝇草, 形状记忆合金, 性能测试

Abstract: Venus flytrap has unique closure mechanism, cell induction and transmission system, which can capture prey quickly and effectively. Using shape memory alloy wire as driving material, a bionic flytrap was developed by analyzing the motion mechanism and motion characteristics of flytrap. The mechanical model of bionic flytrap single blade was established, and the experimental test platform was designed and built. Through the performance test of bionic flytrap single blade, the effects of voltage, current and duty ratio on the bending angle of bionic flytrap blade were obtained, and the corresponding control parameters were determined. The functional experiment of bionic flytrap was carried out. The experimental results show that under the parameter settings of 8 V, 3 A and 100 ms, the maximum opening angle of bionic flytrap is 58 °, the capture is rapid, the response time is fast, the capture action can be completed, and it has certain adaptability.

Key words: bionic venus flytrap, shape memory alloy(SMA), performance test