A New Active Vibration Control Approach Combined Energy with Feedforward Gain

摘要

The structural vibration control effect can be reflected by its vibration energy. In the paper, a simple vibration control strategy based on energy is proposed, the amplitude of control force is solved by comparing structurally allowable energy with actual energy, the direction of them can be located according to the derivation of structural energy. Meanwhile, when the randomicity of earthquake is considered, the feedforward control method is introduced in this paper. The two control ways are organically linked together by way of added feedforward gain, discrete state equation and substitution. Again, considering the improvement of the control effect is small if the feedforward gain is adopted directly, a concept of adjustment factor is presented. The proposed approach have the characteristic of simple calculation and feasible operation. At last, a example of 6-storey building is used to illustrate the feasibility of the proposed method.