Modeling and simulation in Scilab/Scicos

Title:

Personal Author:

Campbell, S. L. (Stephen La Vern)

Publication Information:

New York, NY : Springer, 2006

ISBN:

9780387278025

Subject Term:

Science -- Data processing

Science -- Computer programs

Added Author:

Chancelier, Jean-Philippe

Nikoukhah, Ramine, 1961-

Available:*

Library	Item Barcode	Call Number	Material Type	Item Category 1	Status
Searching... PSZ JB	30000010093319	Q183.9 C35 2006	Open Access Book	Book	Searching... Unknown

Scilab is a free open-source software package for scientific computation. It includes hundreds of general purpose and specialized functions for numerical computation, organized in libraries called toolboxes, which cover such areas as simulation, optimization, systems and control, and signal processing. One important Scilab toolbox is Scicos. Scicos provides a block diagram graphical editor for the construction and simulation of dynamical systems. The objective of this book is to provide a tutorial for the use of Scilab/Scicos with a special emphasis on modeling and simulation tools. While it will provide useful information to experienced users it is designed to be accessible to beginning users from a variety of disciplines. Students and academic and industrial scientists and engineers should find it useful. The book is divided into two parts. The first part concerns Scilab and includes a tutorial covering the language features, the data structures and specialized functions for doing graphics, importing, exporting data and interfacing external routines. It also covers in detail Scilab numerical solvers for ordinary differential equations and differential-algebraic equations. this part provides a global view of Scilab. The second part is dedicated to modeling and simulation of dynamical systems in Scicos. This type of modeling tool is widely used in industry because it provides a means for constructing modular and reusable models. This part contains a detailed description of the editor and its usage, which is illustrated through numerous examples. All codes used in the book is made available to the reader. Stephen L. Campbell is a professor of mathematics and a director of graduate programs at North Carolina State University, having written over 185 scientific publications and authored numerous books. Jean-Philippe Chancelier is affiliated with CERMICS Ecole Nationale des Ponts et Chaussees and is one of the original developers of Scilab. Ramine Nikoukhah is a director of research at INRIA (The French National Institute for Research in Computer Science and Control), senior member of IEEE, one of the original developers of Scilab, and is the creator of Scicos.

Part I Scilab
1 General Information	p. 3
1.1 What Is Scilab?	p. 3
1.2 How to Start?	p. 4
1.2.1 Installation	p. 4
1.2.2 First Steps	p. 4
1.2.3 Line Editor	p. 5
1.2.4 Documentation	p. 6
1.3 Typical Usage	p. 6
1.4 Scilab on the Web	p. 7
2 Introduction to Scilab	p. 9
2.1 Scilab Objects	p. 11
2.1.1 Matrix Construction and Manipulation	p. 12
2.1.2 Strings	p. 17
2.1.3 Boolean Matrices	p. 19
2.1.4 Polynomial Matrices	p. 20
2.1.5 Sparse Matrices	p. 21
2.1.6 Lists	p. 22
2.1.7 Functions	p. 26
2.2 Scilab Programming	p. 27
2.2.1 Branching	p. 28
2.2.2 Iterations	p. 29
2.2.3 Scilab Functions	p. 31
2.2.4 Debugging Programs	p. 35
2.3 Input and Output Functions	p. 37
2.3.1 Display of Variables	p. 37
2.3.2 Formatted Input and Output	p. 38
2.3.3 Input Output in Binary Mode	p. 40
2.3.4 Accessing the Host System	p. 42
2.3.5 Graphical User Interface	p. 43
2.4 Scilab Graphics	p. 48
2.4.1 Basic Graphing	p. 48
2.4.2 Graphic Tour	p. 49
2.4.3 Graphics Objects	p. 53
2.4.4 Scilab Graphics and MpX	p. 56
2.4.5 Old Graphics Style	p. 60
2.5 Interfacing	p. 62
2.5.1 Linking Code	p. 63
2.5.2 Writing an Interface	p. 66
2.5.3 Dynamic Loading	p. 69
3 Modeling and Simulation in Scilab	p. 73
3.1 Types of Models	p. 73
3.1.1 Ordinary Differential Equations	p. 73
3.1.2 Boundary Value Problems	p. 74
3.1.3 Difference Equations	p. 75
3.1.4 Differential Algebraic Equations	p. 76
3.1.5 Hybrid Systems	p. 77
3.2 Simulation Tools	p. 78
3.2.1 Ordinary Differential Equations	p. 78
3.2.2 Boundary Value Problems	p. 90
3.2.3 Difference Equations	p. 95
3.2.4 Differential Algebraic Equations	p. 98
3.2.5 Hybrid Systems	p. 100
4 Optimization	p. 107
4.1 Comments on Optimization and Solving Nonlinear Equations	p. 107
4.2 General Optimization	p. 108
4.3 Solving Nonlinear Equations	p. 112
4.4 Nonlinear Least Squares	p. 113
4.5 Parameter Fitting	p. 117
4.6 Linear and Quadratic Programming	p. 119
4.6.1 Linear Programs	p. 119
4.6.2 Quadratic Programs	p. 120
4.6.3 Semidefinite Programs	p. 120
4.7 Differentiation Utilities	p. 120
4.7.1 Higher Derivatives	p. 122
5 Examples	p. 125
5.1 Modeling and Simulation of an V-Link Pendulum	p. 125
5.1.1 Equations of Motion of the V-Link Pendulum	p. 126
5.1.2 Generated Code and Simulation	p. 130
5.1.3 Maple Code	p. 133
5.2 Modeling and Simulation of a Car	p. 135
5.2.1 Basic Model	p. 135
5.2.2 Equations of Motion	p. 136
5.2.3 Simulation Model	p. 138
5.2.4 Scilab Implementation	p. 139
5.2.5 Simulation Result	p. 141
5.3 Open-Loop Control to Swing Up a Pendulum	p. 142
5.3.1 Model	p. 142
5.3.2 Control Problem Formulation	p. 142
5.3.3 Optimization Problem	p. 143
5.3.4 Implementation in Scilab	p. 145
5.4 Parameter Fitting and Implicit Models	p. 147
5.4.1 Mathematical Model	p. 148
5.4.2 Scilab Implementation	p. 148
Part II Scicos
6 Introduction	p. 159
7 Getting Started	p. 163
7.1 Construction of a Simple Diagram	p. 163
7.1.1 Running Scicos	p. 163
7.1.2 Editing a Model	p. 163
7.1.3 Diagram Simulation	p. 165
7.1.4 Changing Block Parameters	p. 166
7.2 Symbolic Parameters and Context	p. 169
7.3 Hierarchy	p. 173
7.3.1 Placing a Super Block in a Diagram	p. 173
7.3.2 Editing a Super Block	p. 174
7.4 Save and Load	p. 175
7.4.1 Scicos File Formats	p. 175
7.4.2 Super Block and Palette	p. 176
7.5 Synchronism and Special Blocks	p. 176
8 Scicos Formalism	p. 179
8.1 Activation Signal	p. 179
8.1.1 Block Activation	p. 179
8.1.2 Activation Generation	p. 181
8.2 Inheritance	p. 182
8.3 Always Active Blocks	p. 183
8.4 Constant Blocks	p. 184
8.5 Conditional Blocks	p. 184
9 Scicos Blocks	p. 189
9.1 Block Behavior	p. 189
9.1.1 External Activation	p. 189
9.1.2 Always Activation	p. 191
9.1.3 Internal Zero-Crossing	p. 192
9.2 Blocks Inside Palettes	p. 192
9.3 Modifying Block Parameters	p. 193
9.4 Super Block and Scifunc	p. 193
9.4.1 Super Blocks	p. 193
9.4.2 Scifunc	p. 194
9.5 Constructing New Basic Blocks	p. 194
9.5.1 Interfacing Function	p. 195
9.5.2 Computational Function	p. 197
9.5.3 Saving New Blocks	p. 207
9.6 Constructing and Loading a New Palette	p. 207
10 Examples	p. 209
10.1 Predator Prey Model	p. 209
10.2 Control Application	p. 210
10.3 Signal Processing Application	p. 213
10.4 Queuing Systems	p. 216
10.5 Neuroscience Application	p. 218
10.6 A Fluid Model of TCP-Like Behavior	p. 220
10.7 Interactive GUI	p. 221
11 Batch Processing in Scilab	p. 227
11.1 Piloting Scicos via Scilab Commands	p. 227
11.1.1 Function scicosim	p. 228
11.1.2 Function scicos_simulate	p. 232
11.2 Data Sharing	p. 233
11.2.1 Context Variables	p. 234
11.2.2 Input/Output Files	p. 234
11.2.3 Global Variables	p. 236
11.3 Examples	p. 237
11.4 Steady-State Solution and Linearization	p. 243
11.4.1 Scilab Function steadycos	p. 247
11.4.2 Scilab Function lincos	p. 248
12 Code Generation	p. 253
12.1 Code Generation Procedure	p. 253
12.2 Limitations	p. 257
12.2.1 Continuous-Time Activation	p. 257
12.2.2 Synchronicism	p. 258
12.3 A Look Inside	p. 258
12.4 Some Pitfalls	p. 260
12.5 Applications	p. 263
13 Debugging	p. 267
13.1 Error Messages	p. 267
13.1.1 Block Errors	p. 267
13.1.2 Errors During Numerical Integration	p. 268
13.1.3 Other Errors	p. 269
13.2 Debugging Tools	p. 269
13.3 Examples	p. 270
13.3.1 Log File	p. 271
13.3.2 Animation	p. 271
14 Implicit Scicos and Modelica	p. 273
14.1 Introduction	p. 273
14.2 Internally Implicit Blocks	p. 275
14.3 Implicit Blocks	p. 275
14.3.1 Scicos Editor	p. 276
14.3.2 Scicos Compiler	p. 276
14.3.3 Block Construction	p. 276
14.4 Example	p. 277
A Inside Scicos	p. 281
A.1 Scicos Editor	p. 281
A.1.1 Main Editor Function	p. 281
A.1.2 Structure of scs_m	p. 283
A.2 Scicos Complier	p. 286
A.2.1 First Compilation Stage	p. 286
A.2.2 Second Compilation Stage	p. 287
A.2.3 Structure of %cpr	p. 287
A.2.4 Partial Compilation	p. 290
A.3 Scicos Simulator	p. 291
B Scicos Blocks of Type 5	p. 293
B.1 Type 5 Block for the Bouncing Ball Example	p. 293
B.2 Animation Block for the Cart Pendulum Example	p. 294
C Animation Program for the Car Example	p. 299
D Extraction Program for the LATEX Graphic Example	p. 301
E Maple Code Used for Modeling the N-Link Pendulum	p. 303
References	p. 307
Index	p. 309

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