There is no effective method to forecast and estimate the hydraulic vibration of hydraulic turbine up to now in the world, much less research in-depth for powerhouse structure resonance excitated by hydraulic disturbance of hydrogenerator set 目前国内外尚无完善的水轮机水力振动预估方法,而对机组水力振动引起的厂房结构共振更是未深入研究。
Through analysis the reasons influencing measuring stability have been found out, which are the flexure strain and structure resonance produced by the transmission axle under the function of the gearing-in force of the reduction gear 虽然与传统的测量方法一致,但经过理论分析,得出了这种测量方式机械结构影响测量稳定性的原因,即传动轴受减速器齿轮啮合力作用?生的弯曲应变和结构谐振对测量精度影响最大。