The Signals & Systems Lab contains over one hundred functions to support signal processing, system simulation, system identification, design and analysis of control systems, adaptive filtering, non-stationary signal analysis, and statistics.
Three separate graphical user interfaces (GUIs) facilitate application-oriented tasks such as the determination and visualization of spectra, probability density functions, dynamic responses of SISO/MIMO systems, ARMA time-series analyses, and linear time-invariant systems. Each GUI contains advanced commands, interactive tools, and graphics capabilities relevant for each of the supported disciplines.
All commands and algorithms can be accessed via the COMSOL Script command-line interfaces.
Feature Highlights
- Accurate uncertainty descriptions and embedded Monte Carlo simulations
- Adaptive filtering including recursive estimation of time-varying models and Kalman filtering for state estimation
- ARMA time-series analyses
- Control-system analysis including computation of impulse and step responses, Bode diagrams, and Nyquist plots
- Data preprocessing digital-filter design, windowing, resampling/interpolation, and detrending/prefiltering
- Determination and examination of impulse response
- Determination and visualization of spectra
- Dynamic responses of SISO/MIMO systems
- Frequency analysis using DTF,CTF and TFD
- Linear time-invariant (LTI) system analysis
- Parameter estimation using nonlinear least square methods for multiple data sets
- Probability density functions
- Signal analysis—Fourier transform methods, frequency-domain methods, Laplace transforms, z-transforms, and analyzing feedback systems using transform methods