![]() ![]() Model, for instance to add Coulomb friction to the model, then you may use the Rotational Friction block from the Simscape/Foundation If you wish to employ a more complicated friction In most cases real friction is more complicated than this. This type of friction model was chosen because The Rotational Damper block serves to model the viscous friction of the motor. Resistance = R Inductance = L Inertia = J Constant of Proportionality = K Damping coefficient = b To assign the necessary values, double-click on the Resistor, Inductor, Inertia, Rotational Damper,Īnd Rotational Electromechanical Converter blocks and enter the following parameters and associated units: You can rotate a block in a similar manner to the way youįlipped blocks, that is, by right-clicking on the block then selecting Flip Block from the Rotate & Flip menu.Ĭomplete the design of the DC motor Simscape model by assigning values to the physical parameters of each of the blocks to ![]() Four Connection Port blocks from the Simscape/Utilities libraryĭouble-click on the Connection Port blocks to make the location of ports 1 and 2 from the Left and the location of ports 3 and 4 from the Right.Ĭonnect and label the components as shown in the following figure.Rotational Damper and Inertia blocks from the Simscape/Foundation Library/Mechanical/Rotational Elements library.Resistor, Inductor and Rotational Electromechanical Converter blocks from the Simscape/Foundation Library/Electrical/Electrical.Open a new Simulink model and insert the following blocks to represent the electrical and mechanical elements of the DC motor. Models can be built without the need to build mathematical equations from physical principles as was done above by applying ![]() The blocks in the Simscape library represent actual physical components therefore, complex multi-domain In this section, we alternatively show how to build the DC Motor model using the physical modeling blocks of the SimscapeĮxtension to Simulink. We use this model in the DC Motor Speed: Simulink Controller Design section. You can also download the file for this system by right-clicking here and selecting Save link as. Name the subsystem "DC Motor" and then save the model. In order to save all of these components as a single subsystem block, first select all of the blocks, then select Create Subsystem from Selection after right-clicking on the selected portion. The final design should look like the example shown in the figure below.
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