基于稳定度调节的汽轮发电机轴系部分扭振模态控制

Partial Control of the Torsional Vibration of a Turbogenerator Shaft System Based on Stability Regulate

以汽轮发电机轴系扭振系统为例,探讨部分模态施控下,针对个别由于客观条件制约而得不到满意控制效果的施控模态,通过引入相对稳定度,建立二次型最优控制和闭环极点位置之间的联系,对极点位置沿实轴进行重新配置,加速该模态的响应,从而达到所有施控模态均被较好地控制的目的。

With a view to individually unsatisfactory control result due to the restriction of objective condition, the control modes are investigated under partial control on the basis of the torsional vibration of the TSS. Through the introduction of the relative stability and the establishment of the connection between the linear quadric regulator and the locations of closed-loop eigenvalues, the poles are reshifted along the real shaft and the response of the modes are accelerated. As a result, all control modes are controlled better.