钟形振子式角速率陀螺机电耦合特性分析

发布时间：2018-08-12 17:58

【摘要】：钟形振子作为钟形振子式角速率陀螺的核心敏感元件,其机电耦合特性将直接影响钟形振子式角速率陀螺的整体性能。针对钟形振子式角速率陀螺在设计制作过程中未涉及的机电耦合特性展开分析,提出利用弹性力学中的能量原理和拉格朗日方法建立钟形振子机电耦合模型的方法,解决了钟形振子驱动与检测间的多场建模问题,实现了钟形振子的机电耦合关系的线性表征。首先通过分析压电驱动与检测原理,通过坐标变换给出压电电极在钟形振子作用的压电势能表述;利用弹性力学中的能量原理和拉格朗日方法建立钟形振子的机电耦合模型,分析压电电极与钟形振子特性间的关系,确定钟形振子的压电电极参数。最后通过试验手段,验证分析结果的正确性和可用性。
[Abstract]:As the core sensitive element of the bell oscillator angular rate gyroscope, the electromechanical coupling characteristics of the bell oscillator angular rate gyroscope will directly affect the overall performance of the bell oscillator angular rate gyro. Based on the analysis of the electromechanical coupling characteristics of bell type angular rate gyroscope which are not involved in the design and fabrication process, a method of establishing the electromechanical coupling model of bell oscillator by using the energy principle in elastic mechanics and Lagrange method is put forward. The problem of multi-field modeling between the drive and detection of the bell oscillator is solved, and the linear representation of the electromechanical coupling relationship of the bell oscillator is realized. Firstly, the piezoelectric potential energy expression of piezoelectric electrode acting on bell vibrator is given by analyzing the piezoelectric driving and detecting principle, and the electromechanical coupling model of bell oscillator is established by using the energy principle in elastic mechanics and Lagrange method. The relationship between the piezoelectric electrode and the characteristics of the bell oscillator is analyzed, and the piezoelectric electrode parameters of the bell oscillator are determined. Finally, the correctness and availability of the analysis results are verified by means of experiments.
【作者单位】：北京信息科技大学高动态导航技术北京市重点实验室;北京理工大学自动化学院;
【基金】：国家自然科学基金项目(61471046) 北京市自然科学基金项目(4172022) 北京市教委市属高校创新能力提升计划项目(TJSHG201510772017) 北京市科技专项项目(Z161100005016109) 高动态导航技术北京市重点实验室开放课题项目
【分类号】：TN96

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