The hybrid control for vibration of equipment-structure

• Main Authors: Po Shyang Kang, 康博翔
• Other Authors: Mr.Juang Der Shin
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/48461673694967982313

碩士 === 國立中央大學 === 土木工程研究所 === 82 === The dynamic response behavior of equipment-structures controlled by a hybrid control system is studied in this research.The hybrid control system used in this studied is constituted by the passive resilient-friction base isolators (RFBI) and the active actuator.Dynamic responses of equipment- structure installed on the floor are analyzed by using the floor response spectrum approach.For passive control system, the stiffness and friction coefficients of RFBI system dominate the controlled effectiveness of the base isolators.To reduce the relative displacement of isolators, the active actuator is used for which the control force is determined by using the classical optimal closed-loop control law. In order to gain the desired objective, the active actuator is designed to contribute damping force only. Thus, the performance weighting matrix, Q, of active actuator has been derived in this report to obtain the desired system damping ratio when the hybrid control system is used.The performance of the hybrid control system is presented in the form of response spectra.Parameters studied in this report are friction coefficient of RFBI system and coefficients of the performance weighting matrix, Q. Numerical results have shown that, although, the RFBI system can reduce the dynamic responses of equipment-structure very effectively.The hybrid control system can provide much better results than the RFBI system alone.