17,621 research outputs found
Impact of noise on a dynamical system: prediction and uncertainties from a swarm-optimized neural network
In this study, an artificial neural network (ANN) based on particle swarm
optimization (PSO) was developed for the time series prediction. The hybrid
ANN+PSO algorithm was applied on Mackey--Glass chaotic time series in the
short-term . The performance prediction was evaluated and compared with
another studies available in the literature. Also, we presented properties of
the dynamical system via the study of chaotic behaviour obtained from the
predicted time series. Next, the hybrid ANN+PSO algorithm was complemented with
a Gaussian stochastic procedure (called {\it stochastic} hybrid ANN+PSO) in
order to obtain a new estimator of the predictions, which also allowed us to
compute uncertainties of predictions for noisy Mackey--Glass chaotic time
series. Thus, we studied the impact of noise for several cases with a white
noise level () from 0.01 to 0.1.Comment: 11 pages, 8 figure
Identification of Nonlinear Systems From the Knowledge Around Different Operating Conditions: A Feed-Forward Multi-Layer ANN Based Approach
The paper investigates nonlinear system identification using system output
data at various linearized operating points. A feed-forward multi-layer
Artificial Neural Network (ANN) based approach is used for this purpose and
tested for two target applications i.e. nuclear reactor power level monitoring
and an AC servo position control system. Various configurations of ANN using
different activation functions, number of hidden layers and neurons in each
layer are trained and tested to find out the best configuration. The training
is carried out multiple times to check for consistency and the mean and
standard deviation of the root mean square errors (RMSE) are reported for each
configuration.Comment: "6 pages, 9 figures; The Second IEEE International Conference on
Parallel, Distributed and Grid Computing (PDGC-2012), December 2012, Solan
Corporation robots
Nowadays, various robots are built to perform multiple tasks. Multiple robots working
together to perform a single task becomes important. One of the key elements for multiple
robots to work together is the robot need to able to follow another robot. This project is
mainly concerned on the design and construction of the robots that can follow line. In this
project, focuses on building line following robots leader and slave. Both of these robots will
follow the line and carry load. A Single robot has a limitation on handle load capacity such as
cannot handle heavy load and cannot handle long size load. To overcome this limitation an
easier way is to have a groups of mobile robots working together to accomplish an aim that
no single robot can do alon
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