Nonlinear
The system of automatic control of vapor pressure in the boiler with the PI-regulator, taking into account the level of delay and non-linear element.
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (48): Automatic control system vapor pressure in the boiler Download |
WARP3D is under continuing development as a research code for the solution of very large-scale, 3-D solid models subjected to static and dynamic loads. Some features in the code oriented toward the investigation of fracture in metals include a robust finite strain formulation, a general...
Platforms: Mac
License: Freeware | Size: 136 MB | Download (48): WARP3D Download |
Meep (or MEEP) is a free finite-difference time-domain (FDTD) simulation software. Meep FDTD is a free finite-difference time-domain (FDTD) simulation software package developed at MIT to model electromagnetic systems, along with our MPB eigenmode package. Here are some key features of "Meep...
Platforms: *nix
License: Freeware | Size: 747.52 KB | Download (48): Meep FDTD Download |
Mean or standard deviation are usually computed for whole part of the analysed signal. However, sometimes we would like to know how this quantities are changing in the data flow. MEANSTDF compute the expected mean and standard deviation values using user defined window for every data position....
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): MeanStdF Download |
SIMPGRIDSEARCH Multi-dimensional unconstrained nonlinear minimization using grid search + Simplex method. X = SIMPGDSEARCH(OBJFUN,GDVALUES) returns a vector X that is a minimizer of the function described in OBJFUN (usually an m file: OBJFUN.M).See OBJFUN_DEMO.M for how to write an objective...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): SIMPGDSEARCH Download |
R is a language and environment for statistical computing and graphics.
R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, ...) and graphical techniques, and is highly extensible. The S...
Platforms: Windows
License: Freeware | Size: 37.9 MB | Download (47): R for Windows Download |
ENZyme KINetics is the study of the chemical reactions that are catalysed by enzymes. In enzyme kinetics the reaction rate is measured and the effects of varying the conditions of the reaction investigated. Studying an enzyme's kinetics in this way can reveal the catalytic mechanism of this...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (47): Enzkin Download |
QUADPROG2 - Convex Quadratic Programming SolverFeaturing the SOLVOPT freeware optimizerNew for version 1.1:* Significant speed improvement* Geometric Preconditioning* Improved Error CheckingUSAGE:[x,v] = quadprog2(H,f,A,b)[x,v] = quadprog2(H,f,A,b,guess)[x,v,opt] = ...Minimizes the function v =...
Platforms: Matlab
License: Freeware | Size: 30.72 KB | Download (47): quadprog2 - convex QP solver Download |
A Kirchhoff elliptic vortex is a 2D elliptical region (or d-deDUpatchd-deDt) of uniform vorticity embedded in an inviscid, incompressible and irrotational fluid. G. Kirchhoff showed that these are exact solutions to the nonlinear Euler equations in 1876.Subsequently, A. E. H. Love analyzed the...
Platforms: Matlab
License: Freeware | Size: 829.44 KB | Download (47): Kirchhoff Vortex Contour Dynamics Simulation Download |
FitChiTool provides an interface similar to the Curve Fitting Toolbox to the fitChiSquare function.This allows you to perform fits using chi-square when measurement errors are known on linear or nonlinear models. It allows allows you to perform fits with multiple independent (more than one x)...
Platforms: Matlab
License: Freeware | Size: 225.28 KB | Download (46): GUI for Generalized Nonlinear Non-analytic Chi-Square Fitting Download |
The function The LMFnlsq.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago (see the Reference). This version of LMFnlsq is...
Platforms: Matlab
License: Freeware | Size: 870.4 KB | Download (46): LMFnlsq - Solution of nonlinear least squares Download |
DMFitter ActiveX control allows you to add sophisticated regression analysis tools to your software in a few lines of code. Features include: both linear and nonlinear (Levenberg-Marquardt) least squares curve fitting algorithms, arbitrary user models (defined analytically or by string...
Platforms: Windows
License: Freeware | Size: 368.64 KB | Download (46): DMFitter ActiveX control Download |
The APMonitor Modeling Language is optimization software for differential and algebraic equations. It is coupled with large-scale nonlinear programming solvers for data reconciliation, real-time optimization, dynamic simulation, and nonlinear predictive control. It is available as a free web...
Platforms: Windows
License: Freeware | Size: 225 KB | Download (46): APMonitor Modeling Language Download |
A plug-in for Abaqus FEA with empiric data for many types of materials (linear, nonlinear, ortotropic). A simple GUI for creating properties for common materials and sections for bulk and shells.
Platforms: Windows, Mac, Linux
License: Freeware | Size: 21.08 KB | Download (46): materia Download |
This package includes files for modelling nonlinear dynamic systems using a recurrent generalized neural network. The learning scheme uses the complex method of nonlinear nonderivative optimization, thereby avoiding the problems of computing the derivative of an infinite impulse response filter...
Platforms: Matlab
License: Freeware | Size: 256 KB | Download (46): Complex Optimization of a Recurrent Neural Network Download |
Neural Network Based System Identification Toolbox Version 2The NNSYSID toolbox contains a number of tools for identification of nonlinear dynamic systems with neural networks. Several nonlinear model structures based on multilayer perceptron networks are provided and there are also many...
Platforms: Matlab
License: Freeware | Size: 727.04 KB | Download (46): nnsysid Download |
The objective of this project is to make available an open-source version of our Multifactor Dimensionality Reduction (MDR) software. MDR is a nonparametric alternative to logistic regression for detecting and characterizing nonlinear interactions.
Platforms: Windows, Mac, Linux
License: Freeware | Size: 6.02 MB | Download (46): Multifactor Dimensionality Reduction Download |
This upload contains a hybrid Particle Swarm Optimization algorithm for functions in the real space. An options file is also provided, which lets the user fully parameterize the process. The hybrid function used is the @fminsearch, which is available on the MATLAB core. The PSO performs very well...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (46): Hybrid Particle Swarm Optimization Download |
m and .mdl files to reproduce figures in the book, Feedback Control of Dynamic Systems, 5th Ed., Prentice-Hall, 2006Featuring a brand new chapter on nonlinear systems, this revision of the best-selling textbook on feedback control has been recognized for even greater instructor flexibility and...
Platforms: Matlab
License: Freeware | Size: 286.72 KB | Download (46): Feedback Control of Dynamic Systems, Fifth Ed Download |
The function LMFsolve.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago. LMFsolve is its essentially shortened version...
Platforms: Matlab
License: Freeware | Size: 10 KB | Download (45): LMFsolve.m: Levenberg-Marquardt-Fletcher algorithm for nonlinear least squares problems Download |