ABSTRACT
This chapter discusses the modeling of an active piezoelectric Stewart platform. It also discusses the governing motion equation of a piezoelectric Stewart platform obtained followed by the derivation of a transfer function from the actuator force to the sensor output based on frequency response data. The piezoelectric Stewart platform can be used as a precision pointing device, a vibration isolation mount, or an active damping mount. An adaptive identification method can be applied either online along with the vibration control or offline prior to the vibration control. Adaptive identification is a technique that uses an adaptive filter to model an unknown system. The convergence of the adaptive filter used in the identification section of the system can be affected by a large amount of primary vibration signal. The Least Mean Square (LMS) adaptive filter approach is applied for the modeling of the Stewart platform. The LMS adaptive filtering approach has been adopted for the system identification.
