The nonlinearity of moment-angle relationship of the beams in a kind of micromachine vibratory angular rate sensor is derived by using energy method.

用能量法计算了振动轮械角速率器中梁力矩一转角线性关系，分析了在这种线性影响下器幅频、相频特性。

Test results show that nonlinear vibration phenomenon does exist in micromachine vibration beams, and the calculated curves of the formulas derived accords with the measured data.

用推导出公得到计算数据与试验数据吻合得较好。