Simulink Model Examples






Running a VS Vehicle Model in Simulink This memo describes how a VehicleSim (VS) model from a product such as CarSim or TruckSim runs within a Simulink model. As another example, a large model might use model reference Accelerator blocks at the top level component partitions and blend model reference Accelerator and atomic subsystem libraries at lower levels. I need a model of an IM to get a characteristic Torque-speed curve. If you are treating your start location as the origin than it can be initialized to: While we like to model and know all states in a system, you should only include states that you need to know. MATLAB has an extensive API (Application Program Interface) for building and modifying Simulink models from MATLAB code. The fourth example is a simple SimMechanics example which can help you learn the SimMechanics more. " An Example Consider a model for a damped, forced oscillator (0) 0 (0) 0 3 4 5 cos(2 ) 2 2 dt dx x x t dt dx dt d x. Simulink Control Design - Model Examples - MATLAB & Simulink Haupt-Navigation ein-/ausblenden. If you continue browsing the site, you agree to the use of cookies on this website. From Simulink Sinks, add a scope block. Use Simulink for Model-Based Design, where a system model is at the center of the development process, from requirements development, through design, implementation, and testing. Turbulence model with the external drivetrain model, especially as related to Section Inside the wind turbine block of the FAST wind turbine model in Simulink. matlab,simulink. Simulink Design Verifier Matlab Help. Select a Web Site. 1 Introduction The experienced growth in the use of digital networks has led to the need for the design of new communication networks with higher capacity. at the moment i try to make a simulink model of a device. Finally, the synchronization from the model to the GUI during model open, simulation start, etc. Industrial needs overview Electronics Control Unit (ECU) development, in. For example, the following command finds all the inport and outport blocks in the clutch model demo provided with Simulink. 5 shows how to model the thermostat example using the Stateflow chart. Expand your knowledge through interactive courses, explore documentation and code examples, or watch how-to videos on product capabilities. Equations and and variables can be added using VS Commands. Use Simulink Design Verifier to automatically generate tests that maximize model coverage and enable systematic design verification Results Test development time reduced from days to hours 100% model coverage achieved Formal testing begun two months into the project "Everyone knows that errors are much less expensive to fix when. The following example shows a simple to draw PERT Chart. Gathering Blocks Each of the blocks we will use in our example model will be taken from the Simulink Library Browser. find_system('clutch', 'regexp', 'on', 'blocktype', 'port') See Also. By default, MATLAB/Simulink code generation is going to optimize the program and most of the time the variables might be optimized out or simply defined as locals. In addition, explore examples that help get you started with models for many applications. To generate function-call signals when the crank-angle passes specific angles, I used a block from the example model sfcndemo_angle_events. Building the Model in Simulink First, we will model the states of the system in theta and x. You can set the For Iterator block to take external or internal input for the number of iterations it executes. All the inputs to the simulators are information available on a standard PV module datasheet. We would like to be able to view to output of the system so Click on "Sinks" in the Simulink interface and find the "Scope" block. Using the equations from Page 2, the state variable can be. Linearize Simulink Model at Model Operating Point. Simulink simpowersystems examples. interacts between designer, model and test cases generator (AGATHA). After that I created a new project in S32 design studio and replace the source file and header file with the C code generated from. Load the model sys before using this function. Figure 2-4 Create a new Simulink model via button on Simulink Browser window 7. Categories. First, we will model the integrals of the rotational acceleration and of the rate of change of the armature current. Select a Web Site. FEATool is an easy to use MATLAB Finite Element FEM toolbox for simulation of structural mechanics, heat transfer, CFD, and multiphysics engineering applications. Select the type of plot you want to generate, and click "linearize model". use two switches, or u can use the if block in the simulink. These blocks are intended to allow engineers to model a system with permanent-magnet synchronous motors (PMSM) under closed-loop control of an embedded microcontroller, such as Microchip's dsPIC ® Digital Signal Controllers. 1 or discrete at 0. An attempt has been made to design the fractional filter based IMC controller for pH process based on desired phase margin and cross over frequency using MATLAB-SIMULINK. This tutorial gives you aggressively a gentle introduction of MATLAB programming. Section 7 is a conclusion. Following are the links where you can get simulink examples Simulink Examples Model Examples - Simulink - MATLAB & Simulink In the above links, you can get some of the examples related to General Applications, Aerospace Applications, Industrial Au. Say for example XYZ Automobiles is trying to design a new car. The most effective way to build a model of a system is to consider components independently. Simulink can work directly with nonlinear equations, so it is unnecessary to linearize these equations as it was in the MATLAB tutorials. The program code is obtained from Haddi Saddat book power system analysis and I've made the GUI. into the model and connect the output of the step to the input of the state space model (this can be done by clicking on the Step then holding Ctrl and then clicking on the state-space block). Model the state process We will outline several ways to model this simple situation, showing the power of a good Kalman filter model. In this example you learned that: Simulink Support Package for Arduino Hardware provides blocks for configuring, reading from and writing to Arduino sensors and actuators. Based on your location, we recommend that you select:. 6 (Release 13). Simulink Control Design - Model Examples - MATLAB & Simulink Haupt-Navigation ein-/ausblenden. By default, MATLAB/Simulink code generation is going to optimize the program and most of the time the variables might be optimized out or simply defined as locals. Hundreds of examples, online and from within the product, show you proven techniques for solving specific problems. The following software is required for integrating Simulink components into a Rational® Rhapsody® model: Matlab must be available and licensed (Matlab 7), with Simulink (version 6), and the Real-Time Workshop component which generates C and C++ code from Simulink models. Because of this, we will discuss the basics of modeling these equations in Simulink. 5 kHz and a 0. The implementation sections of the model is removed and only the structure of the model is preserved during the export. Also, allowing a Model block to inherit sample time maximizes its reuse potential. x) SIMULINK Tutorial(Barry Lennox) Introduction to Simulink(Jonathan M Hill) Short Simulink Tutorial (Simulink 1. 0 simulation program generates both a model and corresponding experiments [8]. Select complete addition model. slx", the only difference is "Simulation Mode" of each block parameters finally, the test block is ready to run Code Generation for PIL. 1 or discrete at 0. Learn how to use Simulink Control Design to solve your technical challenge by exploring model examples. For example, a model can fix the data types and dimensions of all its input and output signals. As a first exercise we will be building a model. In addition, to drawing a model into a blank model window, previously saved model files can be loaded either from the File menu or from the MATLAB command prompt. Here Oustaloup approximation technique is used to approximate the Fractional filter. In general, a dynamic system can be constructed from just basic physical laws. View Binder1. Select a Web Site. As a first exercise we will be building a model. Expand all. You'll learn how to work with transfer functions. INTRODUCTION In this module of the 3-Phase PMSM Control Workshop with NXP's Model-Based Design Toolbox , we are going to spin the PMSM for the first time. The system will be linearized about the operating point (see Ogata 3-10 and Simulink Help). Python Exception Handling and Basic Examples (guide to Try, Except Nested Try Statements in Java Examples 9 9 Enhacv Examples Of Resumes By Enhancv Projects To Try. the simulink menu. generalized photovoltaic model using Matlab/Simulink software package, which can be representative of PV cell, module, and array for easy use on simulation platform. The most useful icon here is the PID Controller. Linearization using SIMULINK function linmod A SIMULINK function linmode can be used for extracting a linear model in the form of the. Simulink provides a graphical user interface (GUI) for building models as. Link to Test Cases from Requirements. Their assistance and guidance can be helpful for the students regarding the Simulink report generation, which includes Simulink Report Generator assignment help, Simulink Report Generator homework help, project paper help, Simulink Report Generator using matlab quizzes preparation help etc. Description. In this example you will learn how to create Simulink model that controls a standard servo motor. Impedance Extraction by MATLAB/Simulink and LabView/Multisim by Jen-Pin Lin A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Department of Electrical Engineering College of Engineering University of South Florida Co-Major Professor: Lingling Fan, Ph. The system models can be so easily constructed via just click and drag operations. build and use a Simulink model. Embedded systems applications examples. That is the main idea behind solving this system using the model in Figure 1. In addition, to drawing a model into a blank model window, previously saved model files can be loaded either from the File menu or from the MATLAB command prompt. Using the equations from Page 2, the state variable can be. See the Simulink demo model, clutch, for an example of how to use Goto blocks in an enabled subsystem. In this example, we will draw a simple sin wave model in MATLAB Simulink. Amlan Jena. find_system('clutch', 'regexp', 'on', 'blocktype', 'port') See Also. PSpice ® and Matlab ® Simulink ® from Mathworks ® provide a unique environment for system exploration and qualification early in the design process. This example presents a Simulink model of an automotive wheel slip control loop as might be used in a rudimentary ABS system. Constructing Simulink models •Examples • Open loop synchronous buck converter model Simulink file Starting Transient Simulation • In the current Simulink PDF Optimization under Matlab Simulink code of a three This modeling of the new three phase HV power supply of one magnetron by phase consists to exploiting the model of new three phase. the simulink menu. Simulink Support Package for Arduino Hardware enables you to create and run Simulink® models on Arduino board. And then we will see to run MATLAB Simulink model for sin wave. When software and hardware implementation requirements are included, such as fixed-point and timing behavior, you can automatically generate code for embedded deployment and create test benches for system verification, saving time and avoiding the introduction. The model is "uart_model_pnt". Since it is a linearized model, however, it is not the same as the fully-nonlinear impulse response obtained in Simulink. 2 Model of the Mixing Tank. example for modeling of many technological processes. MODELING FIRST AND SECOND ORDER SYSTEMS IN SIMULINK First and second order differential equations are commonly studied in Dynamic Systems courses, as they occur frequently in practice. It has been in use in the process industries in chemical plants and oil refineries since the 1980s. the simulink menu. Select a Web Site. Model Examples. com SATISH NARKHEDE Electronics and Telecommunication department, Professor,. The support package includes a library of Simulink blocks for using devices' sensors and network interfaces. m contains data for running the model. About Simulink Model Comparison. As you can imagine, a car is a complicated system. After you install the required support package for a target device, train the classification model and deploy the Simulink model to the device. There are several methods to solve the transmission line fault problem. Tool for Modeling Simulink provides a graphical editor for building models as block diagrams, allowing. mdl extension as a simulation model (similar to how MATLAB recognizes files with. The model contains an Extended Kalman Filter that estimates aircraft position from radar measurements. This is the multi-port feedback configuration (feeds back into input of 1st and 2nd integrators). economy, Simulink provides you with the tools to model and simulate almost any real-world problem. Add Simulink blocks in the Simulink Editor. Simulink Basics Tutorial. ROHIT BODHE Electronics and Telecommunication department, Student, ME (Microwave) Pune Institute of Computer Technology, University Of Pune Pune, Maharashtra, India rohitbodhe@gmail. We will demonstrate through an example. To use Simulink, make sure the Current Directory in the Command Window is set to the directory containing your Simulink model. Based on your location, we recommend that you select:. IBM Rhapsody and MATLAB/Simulink 5,313 views. We will demonstrate. Expand your knowledge through interactive courses, explore documentation and code examples, or watch how-to videos on product capabilities. Use the Model Info block dialog box to specify the content and format of the text that the block displays. Ship Simulator - a vehicle simulation computer game by VSTEP which simulates maneuvering various ships in different environments. For the parameters to be available to the other blocks, they need to be either in the model workspace or in the base workspace. Add the following 2 blocks to your project sheet. Geometry Morphing Example (vrmorph) The vrmorph example illustrates how you can transfer matrix-type or variable-size signal data between the Simulink interface and a virtual reality world. It includes models for ships, underwater vehicles, and floating structures. build and use a Simulink model. In Simulink ®, you can compare Simulink models. Learn how to use Simulink Real-Time to solve your technical challenge by exploring model examples. Control Tutorials for Matlab and Simulink (Matlab 5. Simulink extension for model files is. This can help clean up models immensely. In Simulink ®, you can compare Simulink models. Each variant references a specific model with its. This example uses the ZeroMQ library to implement co-simulation in Simulink. Use model reference variants. The first example is a low-pass RC Circuit that is often used as a filter. One of the main advantages of Simulink is the ability to model a nonlinear system, which a transfer function is unable to do. sfcndemo_stvctf The S-function demonstrates how to work with the solvers so that the simulation maintains consistency , which means that the block maintains smooth and consistent signals for the integrators although the equations that are being integrated are changing. Simulink Control Design - Model Examples - MATLAB & Simulink Navigazione principale in modalità Toggle. Learn how to use Simulink Control Design to solve your technical challenge by exploring model examples. The following results are generated. The simulation parameters can be set by pressing Ctrl+E. PSF Lab - calculates the point spread function of an optical microscope under various imaging conditions based on a rigorous vectorial model. Based on your location, we recommend that you select:. However, only state ports can connect to Goto blocks in an enabled subsystem. - Building a Simulink model Building a Simulink model of a system consists of selecting the appropriate blocks and connecting them in a way that represents the mathematical models. The two rectangular blocks represent two discrete modes, "OFF" and "ON". This makes the generalized PV model easily simulated and analyzed in. In Simulink, this means that we need to generate Function-call signals. Models are represented graphically in Simulink as block diagrams. 1; % define motor state variable model A = [-R/L, 0, -K/L; 0, 0, 1; K/J, 0, -B/J]; B = [1/L; 0; 0]; C = [0, 1, 0]; D = [0]; % check. DESIGN OF SIMULINK MODEL FOR OFDM AND COMPARISON OF FFT-OFDM AND DWT-OFDM. Link to Test Cases from Requirements. Matlab is an environment for technical computing to explore,analyze and visualize data, develop algorithms, interactive graphics and custom deploy-able tools whereas Simulink is an environment for Model Based System Level Design to simulate, analyze and implement dynamic and multi-domain systems. Hundreds of examples, online and from within the product, show you proven techniques for solving specific problems. However, only state ports can connect to Goto blocks in an enabled subsystem. MATLAB Simulink and PSpice. How to implement nonlinear vehicle model in matlab/simulink? Now I would like to verify my Simulink model by comparing the results with MSC ADAMS. A Model block is used to reference one Simulink® model from another Simulink model. The implementation sections of the model is removed and only the structure of the model is preserved during the export. I'm going to go here to Sources, and let's scroll down and let's pick our favorite one, sine wave. As another example, a large model might use model reference Accelerator blocks at the top level component partitions and blend model reference Accelerator and atomic subsystem libraries at lower levels. The conversion preserves hierarchy and requirements links. We will demonstrate. When you're learning to use MATLAB and Simulink, it's helpful to begin with code and model examples that you can build upon. One of the main advantages of Simulink is the ability to model a nonlinear system, which a transfer function is unable to do. Start now Teach with MATLAB and Simulink Ready-to-use courseware, code examples, and projects. For example, if you are controlling a robotic arm with three joints your state can be: This should be initialized at whatever state you want to start at. For an example of iterative design, see Basic Modeling Workflow. " An Example Consider a model for a damped, forced oscillator (0) 0 (0) 0 3 4 5 cos(2 ) 2 2 dt dx x x t dt dx dt d x. Their assistance and guidance can be helpful for the students regarding the Simulink report generation, which includes Simulink Report Generator assignment help, Simulink Report Generator homework help, project paper help, Simulink Report Generator using matlab quizzes preparation help etc. In each mode, the temperature evolves according to a specified differential equation. A Variant Subsystem block can contain Model blocks as variants. Add a Simulink block to set system-wide parameters. Simulink is an environment this is a graphical simulation and Model-Based Design of multidomain dynamic and embedded systems. When you're learning to use MATLAB and Simulink, it's helpful to begin with code and model examples that you can build upon. INTRODUCTION In this module of the 3-Phase PMSM Control Workshop with NXP's Model-Based Design Toolbox , we are going to spin the PMSM for the first time. Application Examples A number of pre-built examples are provided together with PSIM. of MATLAB Simulink model of the above mentioned experimental setup. (The examples shown in this memo were taken from TruckSim 7. However, only state ports can connect to Goto blocks in an enabled subsystem. I want to run a simulink model using m. Review and merge differences using three-way model merge or two-way model merge. Building Simulink Models using MATLAB Code. Answer / kosal ram. IBM Rhapsody and MATLAB/Simulink Points Generate and simulate a Simulink model from a - MATLAB/Simulink structured SysML block/UML class that consists of SysML. Response to EDABoard question: ADC in Matlab simulink I've put together a 2nd order continuous sigma-delta Simulink model as a starting point. In addition, to drawing a model into a blank model window, previously saved model files can be loaded either from the File menu or from the MATLAB command prompt. The example shows how to build a simple model that takes a sine wave input and amplifies it. We will build the model by copying Library blocks into this window. The Simulink results and experimental results are compared and are similar in nature. pdf from AA 1The first three tutorials are selected from the MATLAB/Simulink help. replBlks = replace_block(sys,current,new) replaces the blocks current in the model sys with blocks of type new. NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. There is one outlet pump. " Then, using the Sum component, these terms are added, or subtracted, and fed into the integrator. I'm looking for some practical examples. Train system. Learn how to use Simulink Control Design to solve your technical challenge by exploring model examples. There is one mixing tank and two inlet valves. Math Operations -> Sum blocks, drag two of them, label as Sum_F1. new Simulink user or as a reference for the more experienced user. Simulink also provides examples that model a wide variety of real-world phenomena (click the Examples link at the top of the Simulink Documentation Center top-level page). On the Simulink Start Page, select Blank Model: Adding the Blocks to the Model. As another example, a large model might use model reference Accelerator blocks at the top level component partitions and blend model reference Accelerator and atomic subsystem libraries at lower levels. Add Simulink blocks in the Simulink Editor. "One Word: Simulink. Wohlfarth 7. If you continue browsing the site, you agree to the use of cookies on this website. Building the Model in Simulink First, we will model the states of the system in theta and x. Here an example is given to demonstrate how the code generator can be used to control a model in Simulink. It can be run both under interactive sessions and as a batch job. A variant describes one of N possible modes a Variant Subsystem block can operate in. This can help clean up models immensely. Section 4 introduces AGATHA, background technology. Everybody knows what simulink is so this is just a mandatory post so I am going to keep it short. Math Operations -> Sum blocks, drag two of them, label as Sum_F1. Simulink, also developed by MathWorks, is a data flow graphical programming language tool for modelling, simulating and analyzing multi-domain dynamic systems. You can open a configurable subsystem library by right-clicking on the subsystem in the Simulink model and selecting Link options -> Go to library block from the pop-up menu. The Marine Systems Simulator (MSS) is a Matlab/Simulink library and simulator for marine systems. Models are represented graphically in Simulink as block diagrams. MATLAB/Simulink. Learn how to use Simulink Control Design to solve your technical challenge by exploring model examples. 4 solving differential equations using simulink the Gain value to "4. Posts about typical simulink model written by k10blogger. After that I created a new project in S32 design studio and replace the source file and header file with the C code generated from. 2019 (380) August (27) REDS Library: 46. The VS Math Model can be connected to a model in another simulation environment, such as Simulink. In the following image, you can see, a single sin wave (source) is connected to the scope (sink) by a straight arrow line. If you do not specify an operating point when linearizing a Simulink ® model, the software uses the operating point specified in the model by default. Impedance Extraction by MATLAB/Simulink and LabView/Multisim by Jen-Pin Lin A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Electrical Engineering Department of Electrical Engineering College of Engineering University of South Florida Co-Major Professor: Lingling Fan, Ph. 4 solving differential equations using simulink the Gain value to "4. The following Simulink model uses this S-function. Simulink Control Design - Model Examples - MATLAB & Simulink Menu de navigation principal. You can use a block from a Simulink ® library or from another model as the replacement block. For interpreted execution, the model simulates the block using the MATLAB ® execution engine. ) Simulink is a Matlab add-on that allows. For example, if you are controlling a robotic arm with three joints your state can be: This should be initialized at whatever state you want to start at. m contains data for running the model. This link also shows how to display the execution order in a model, which can sometimes be extremely useful to know. 1) July 2002 Online Only Revised for MATLAB 6. Learn Simulink with practical examples and become an expert in it. In the Model Explorer Window, under Model Properties, code can be inserted into the InitFcn and the StopFcn. I need a model of an IM to get a characteristic Torque-speed curve. Model Files In Simulink, a model is a collection of blocks which, in general, represents a system. For improved speed, put the model in compile before using the function multiple times. Simulink, also developed by MathWorks, is a data flow graphical programming language tool for modelling, simulating and analyzing multi-domain dynamic systems. The following example shows a simple to draw PERT Chart. It forms addition Simulink MATLAB model. Simulink Support Package for Arduino Hardware enables you to create and run Simulink® models on Arduino board. Building the Model in Simulink In this example, rather than express all the forces and geometric constraints (which is difficult to model in Simulink for dynamic systems with constraints) we will model the nonlinear Lagrangian equation of motion directly. Response to EDABoard question: ADC in Matlab simulink I've put together a 2nd order continuous sigma-delta Simulink model as a starting point. This will open the Simulink Start Page. One of the main advantages of Simulink is the ability to model a nonlinear system, which a transfer function is unable to do. If you continue browsing the site, you agree to the use of cookies on this website. Return to your computer and run the installer again. Concept of signal and logic flow In Simulink, data/information from various blocks are sent to another block by lines. For example, the following command finds all the inport and outport blocks in the clutch model demo provided with Simulink. Extra example: spring-mass-damper system with a transfer function So far we have been working with simulations for time-based systems. Based on your location, we recommend that you select:. The Modelica Association is a non-profit organization with members from Europe, U. Ricker - 3 - Use the Library Browser™s File menu (or the blank document icon) to open a new model window. So the other part of the Seminar is a talk and demonstration. Based on your location, we recommend that you select:. Selecting the Additional Linear icon from this group yields the set of icons in Figure M2. , Canada and Asia. We would like to be able to view to output of the system so Click on “Sinks” in the Simulink interface and find the “Scope” block. For an example of iterative design, see Basic Modeling Workflow. This example shows how to create a model that uses the MATLAB Function block to calculate the mean and standard deviation for a vector of values. The following results are generated. interacts between designer, model and test cases generator (AGATHA). Complete Simulink Model With The Insertion Of Smoothing Pre-Filter. The overall system response is shown as. To begin with, some parts of a Simulink model are compiled for performance, and this compiler does not support code which involves object oriented code. This document contains the notes for the talk. What is Simulink • Simulink is an input/output device GUI block diagram simulator. In this example you learned that: Simulink Support Package for Arduino Hardware provides blocks for configuring, reading from and writing to Arduino sensors and actuators. Building up the Model Using SIMULINK 1. EE4512 Analog and Digital Communications Chapter 8 • The periodic baseband signal is the sum of a 1 V 500 Hz, a 0. FEATool is an easy to use MATLAB Finite Element FEM toolbox for simulation of structural mechanics, heat transfer, CFD, and multiphysics engineering applications. Simulink code generation and simulation example¶ The Simulink C S-Function code generation can generate Simulink C code from a CIF specification. Train system. An example of a static physical model is a stick model of a water molecule, with two small hydrogen "balls" representing the hydrogen atoms stuck with short sticks on either side of one oxygen "ball," creating a visual interpretation of H 2 O. When software and hardware implementation requirements are included, such as fixed-point and timing behavior, you can automatically generate code for embedded deployment and create test benches for system verification, saving time and avoiding the introduction. It forms addition Simulink MATLAB model. an airplane wing, or the effect of the monetary supply on the economy, Simulink provides you with the tools to model and simulate almost any real-world problem. This is because Simulink, while processing your model, tries to solve as quickly as possible by taking as large a time step as possible. This is the multi-port feedback configuration (feeds back into input of 1st and 2nd integrators). (The examples shown in this memo were taken from TruckSim 7. For the drive i need a simulink model of an induction motor. In this example, we will draw a simple sin wave model in MATLAB Simulink. file using command se_param, but my simulink model is little slow and therefor I cant use the data created in simulink model in the m. The program code is obtained from Haddi Saddat book power system analysis and I've made the GUI. You can select model properties to display on the block. For improved speed, put the model in compile before using the function multiple times. Once a system is built, simulations are run to analyze its behavior. We will represent Newton's equations for the pendulum rotational inertia and the cart mass. I need a model of an IM to get a characteristic Torque-speed curve. It has been in use in the process industries in chemical plants and oil refineries since the 1980s. If a model name is too long try shortening it. Learn how to use Simulink Control Design to solve your technical challenge by exploring model examples. 2009 - Outline - • This is a example from mathworks, a great resource @ mathworks. Model Files In Simulink, a model is a collection of blocks which, in general, represents a system. Ricker - 3 - Use the Library Browser™s File menu (or the blank document icon) to open a new model window. Model names should not exceed 20 characters. MS Figure 4. Building Simulink Models using MATLAB Code. Model Examples - Simscape - MATLAB & Simulink Cambiar a Navegación Principal. Wohlfarth 7. A variant describes one of N possible modes a Variant Subsystem block can operate in.