研究目的
To find the design and dimension for which we get optimum performance in terms of frequency response and sensitivity for a self-exited piezoelectric vibration sensor.
研究成果
From the responses, it is clear that in the reported work, a detailed analysis of vibration sensors was carried out starting from the design. The characteristics graph shows that the bandwidth attained is similar and is independent of load magnitude.
研究不足
The technical and application constraints of the experiments, as well as potential areas for optimization, are not explicitly mentioned in the paper.
1：Experimental Design and Method Selection:
The design considered in the work has two cylindrical rings, adjacent to each other. Two rings are held together with a rigid base structure, which is considered as a reference point grounded. The smaller inner holes are rigidly fixed, and fixed to ground. Inside these two circles, a thin layer of silver electrodes of
2：025 μm thickness are placed. The two electrodes are shorted and they act as one plate of a capacitance. The dimension of the structure considered here is breadth X (cid:
2)
3：05 μm, height Y (cid:
2)
4：05 μm and thickness Z (cid:
2)
5：0 μm. Sample Selection and Data Sources:
The sensor is subjected to varying frequency of vibration for different magnitude of load.
6：List of Experimental Equipment and Materials:
COMSOL tool is used for design.
7：Experimental Procedures and Operational Workflow:
The sensor is subjected with load and the structural deformation caused due to the load applied is analyzed.
8：Data Analysis Methods:
The change in capacitance is calculated by considering the two inner circles as two coaxial cables, and is given in terms of charge ‘Q’ and voltage ‘V’.
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