Loveday P W, Rogers C A
Division of Material Science and Technology, CSIR, Pretoria, South Africa.
IEEE Trans Ultrason Ferroelectr Freq Control. 1998;45(5):1211-5. doi: 10.1109/58.726445.
A method for analyzing the effect of feedback control on the dynamics of piezoelectric resonators used in vibratory gyroscopes has been developed. This method can be used to determine the feasibility of replacing the traditional mechanical balancing operations, used to adjust the resonant frequency, by displacement feedback and for determining the velocity feedback required to produce a particular bandwidth. Experiments were performed on a cylindrical resonator with discrete piezoelectric actuation and sensing elements to demonstrate the principles. Good agreement between analysis and experiment was obtained, and it was shown that this type of resonator could be balanced by displacement feedback. The analysis method presented also is applicable to micromachined piezoelectric gyroscopes.
一种用于分析反馈控制对振动陀螺仪中使用的压电谐振器动力学影响的方法已经开发出来。该方法可用于确定通过位移反馈取代用于调节谐振频率的传统机械平衡操作的可行性，以及确定产生特定带宽所需的速度反馈。在具有离散压电驱动和传感元件的圆柱形谐振器上进行了实验，以演示这些原理。分析与实验结果吻合良好，结果表明这种类型的谐振器可以通过位移反馈实现平衡。所提出的分析方法也适用于微机械压电陀螺仪。
