该文提出了一种高灵敏度的热膨胀陀螺, 并对其敏感机理进行了研究。通过COMSOL创建了该结构的二维模型, 并对其进行了有限元分析。结果表明, 输入功率为5 mW, 输入角速度范围为-1 000~1 000 (°)/s时, 提出的热膨胀陀螺温度灵敏度为2.12 mK·［(°)/s］-1, 具有陀螺效应,且热膨胀陀螺灵敏度为1.98 mV·［(°)/s］-1, 非线性度为7.64%。与之前的结构相比, 陀螺灵敏度有提高。该高灵敏度热膨胀陀螺具有抗冲击能力强, 制作成本低, 工艺简单及可靠性高等优点, 可用于航天、消费电子及**等领域。

In this paper, a high-sensitivity thermal expansion gyro was proposed, and its sensitive mechanism was studied. A 2D model of the structure was created by COMSOL, and the finite element analysis was carried out. The results show that when the input power is 5 mW, the input angular velocity range is -1 000-1 000 (°)/s, the proposed thermal expansion gyroscope has gyroscopic effect and its temperature sensitivity is 2.12 mK·［(°)/s］-1. When the input power is 5 mW, the input angular velocity range is -1 000-1 000 (°)/s, the sensitivity of the proposed thermal expansion gyro is 1.98 mV·［(°)/s］-1, and the nonlinearity is 7.64%. The gyro sensitivity is improved compared to the previous structure. The high-sensitivity thermal expansion gyro has the advantages of strong impact resistance, low production cost, simple process and high reliability, and can be used in aerospace, consumer electronics, military and other fields.