OPTIMUM CONTROL TO A PARTIALLY CONTROLLED TURBOGENERATOR SHAFT TORSIONAL VIBRATION SYSTEM

0 INTRODUCTION*It is well known from theoretical investigation that a mechanical vibration system is controllable. Zero vibration for every modes of a system can be achieved if the control is applied to each mode. Unfortunately，it is impossible to achieve this in engineering practice. For an active vibration control system with many variables，the number of vibration-resistant forces that can be applied is limited. In general，active control is only applied to a few of the most harmful v…

OPTIMUM CONTROL TO A PARTIALLY CONTROLLED TURBOGENERATOR SHAFT TORSIONAL VIBRATION SYSTEM

The optimal control to a partially controlled turbogenerator shaft torsional vibration system is investigated. The principle of input feedforward control is presented to achieve the minimum of the average vibration energy in a system,and the optimal control matrix of the system is derived. A turbogenerator shaft system is taken as an example to simulate the optimal control process of the torsional vibration. Results from this simulation indicate that the vibration can be effectively controlled by a partial control strategy.