6-DEGREE-OF-FREEDOM ACTIVE VIBRATION ISOLATION USING A STEWART PLATFORM MECHANISM

Intelligent Automation, Inc. has performed a study of a six-degree-of- freedom (dof) active vibration isolation system based on a Stewart pla tform mechanism to be used for precision control of a wide range of sp ace-based structures as well as earth-based systems. This article pres ents part of the study results, which includes a new Terfenol-D actuat or design and analysis, a design of a Stewart platform as a vibration isolation device, and robust adaptive filter algorithms for active vib ration control. Prototype hardware of a six-dof active vibration isola tion system has been implemented and tested. About 30 dB of vibration attenuation is achieved in real-time experiments.