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Abstract: A semi-active static output feedback variable structure
control strategy for the vibration attenuation is presented based on the
fact that for multi-object electro-rheological damper vibration
suppression system, all state variables is hardly to measure real time,
there are always uncertainty external disturbance, the perturbation of
parameters often appear and the damping performance of damper is
controlled continuously. To implement the complete external disturbance
decoupling control, the sliding surface gradient parameters are chosen
according to the reduced order sliding mode motion Hurwitz stability
criterion. The limit of electro-rheological damper damping is
incorporated into the controller. The optimal vibration attenuation of
main object is guaranteed due to the control rule that damping force
only dissipates the vibrating energy of main object. The external
disturbance self-adaptability of the vibration suppression control
system, the system parameter robustness of the control method and the
vibration attenuation effectiveness are all demonstrated by numerical
simulation results. Simulations results indicate that the performance of
the semi-active static output feedback variable structure control
strategy is remarkable.
Key words: Electro-rheological damper Semi-active control Static
output feedback Variable structure control
CLC No: O328
TB535
国家自然科学基金资助项目(69974024). Received 20011205, received in revised
form 20020528
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