The hierarchical decentralized robust control on uncertain building structure experiment research

The robust control theory is used in the building structure fields to resolve the uncertainty of the actual building structure. The linear matrix inequality of robust control method based on hierarchical decentralized state feedback is used to control building structure. It constructs cantilever active control experiments by Matlab/xPC control method, and a half physical real time data acquisition and control of cantilever is realized. The result shows that, while the mass of structure change, the vibration has been in good control. According to the time domain analysis, the vibration attenuation velocity quickens after the cantilever is controlled. The location 1^#-3^# have a good control effect. Because of the existence of noises and small vibration response of the location th 4^#, the location 4^# has not good control effect. The conclusion is that it is feasible to make hierarchical decentralized control over cantilever by using piezoelectric material. The experimental results show that controllers can work very well and has strong robustness.