A time - varying model is developed for long - distance and variable - velocity AUV with high accuracy control and guidance. 为开发研制大航程、变速度的水下自航器,实现更精确的控制和导引,需建立水下自航器的时变运动模型. 互联网 Inspection and repair of deteriorating structures is scheduled based ...
A surface EMG signal identification method based on time-varying autoregressive model is presented. To fully utilize the nonstationary character of the EMG signal, time-varying AR model is employed to get the signal's frequency representation. Singular value decomposition is then used to extract feat...
IDENTIFICATION OF TIME-VARYING MODAL PARAMETERS OF STRUCTURE USING OUTPUT ERROR TIME SERIES MODEL An output error(OE) time series model, which describes input and output relationship of the system, is established based on the motion equation of the vibr... YH Zhao,YU Kai ping,JX Zou - 《...
Example on Time-Varying CAPM Model 一点小小的数学练习,如何用State space model来改写一些常见的ARMA模型 Here we do a little more practices on how to build the State Space models for ARMA time series models. 1. Give one way to represent the AR(2) model in the state space form. yt=a+b1y...
As an application of this concept, a statistical time-varying model is developed and the prediction performance is compared against its static counterpart (time-invariant model). The proposed approach is able to capture the ISMR anomalies and successfully predicts the severe drought years too. ...
model reductionmoving loadsIn this contribution we investigate Model Order Reduction (MOR) for linear systems with time-varying parameters p(t). Such systems arise, for instance, in structural dynamics and multibody simulations when the position of an acting force on the physical structure varies ...
model is set up for monitoring data for the dam storage period.Case analysis shows that the model parameters can be periodically updated with the changes of the storage state,and the accuracy of fitting and forecasting is better than that of the traditional statistical model,so it is more ...
an intelligent method of path tracking based on linear time-varying model predictive control is proposed.Although agricultural vehicle model usually has high nonlinearity,the method selects the linear timing-varying error model of the dynamic model as the prediction model of model predictive control to...
From periods 1 to T/2, the % state model is an AR(2) and an MA(1) model, and the observation model is % the sum of the two states. From periods T/2 + 1 to T, the state model is % just the AR(2) model. A1 = {[params(1) params(2) 0 0; 1 0 0 0; 0 0 0 ...
Our main contribution lies in that we firstly put forward a novel time-varying state model to depict the dissemination mechanism of hot online topic. Meantime, we bring forward the first universal trend prediction theory of hot topic based on moving time windows which can be applied to distinct...