Time-varying modal parameters identification of large flexible spacecraft using a recursive algorithm
نویسندگان
چکیده
منابع مشابه
Identification of Time-varying Modal Parameters Using a Time-varying Autoregressive Approach
A time-varying autoregressive model with time-varying coefficients is introduced in this paper for parameter extraction from non-stationary vibration signals. With this model, the relationship between linear time-varying modal parameters, i.e., instantaneous frequencies and damping factors, and time-varying autoregressive model coefficients is established. The time-varying autoregressive modeli...
متن کاملWavelet based recursive identification of modal parameters
This paper presents a recursive method of modal parameters identification based on operational measurements, dedicated for non-stationary systems. Decoupling signal components procedure allowed to reduce the signal model and simplified the process of modal parameters estimation. Adaptive method of filtering simplified the process of wavelet function selection. Presented method utilize Continuou...
متن کاملIdentification of Time-varying Modal Parameters Using Linear Time-frequency Representation
A new method of parameter identification based on linear time-frequency representation and Hilbert transform is proposed in this paper to identify modal parameters of linear time-varying systems from measured vibration responses. With Gabor expansion and synthesis theory, measured responses are represented in time-frequency domain and modal components are reconstructed by time-frequency filteri...
متن کاملA recursive online algorithm for the estimation of time-varying ARCH parameters
In this paper we propose a recursive online algorithm for estimating the parameters of a time-varying ARCH process. The estimation is done by updating the estimator at time point t − 1 with observations about the time point t to yield an estimator of the parameter at time point t . The sampling properties of this estimator are studied in a non-stationary context – in particular, asymptotic norm...
متن کاملHigh Accuracy Relative Motion of Spacecraft Using Linearized Time-Varying J2-Perturbed Terms
This paper presents a set of linearized equations was derived for the motion, relative to an elliptical reference orbit, of an object influenced by J2 perturbation terms. Approximate solution for simulations was used to compare these equations and the linearized keplerian equations to the exact equations. The inclusion of the linearized perturbations in the derived equations increased the high ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: International Journal of Aeronautical and Space Sciences
سال: 2016
ISSN: 2093-274X
DOI: 10.5139/ijass.2016.17.2.184