**MODELING OF A DC SERVO MOTOR**

Electric motors are the most common actuator used in

electromagnetic systems of all types. They are made in a

variety of configurations and sizes for applications ranging

from activating precision movements to powering diesel-electric

locomotives. The laboratory motors are small servomotors,

which might be used for positioning control applications in a

variety of automated machines. They are DC (direct current)

motors. The armature is driven by an external DC voltage that

produces the motor torque and results in the motor speed. The

armature current produced by the applied voltage interacts with

the permanent magnet field to produce current and motion.

A simplified schematic of the motor is shown in Figure 1 below.

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This example demonstrates the process of estimating the

parameters of a multi-domain DC servo motor model constructed

using various physical modeling products.

Contents

1.Description of the DC Servo Motor System

2.Estimating Parameters of the DC Motor Model

3.Importing Experimental Data

4.Selecting Parameters for Estimation

5.Defining an Estimation

6.Running the Estimation

7.Validation

8.Summary

**DC Servo Motor Parameter Estimation**This example demonstrates the process of estimating the

parameters of a multi-domain DC servo motor model constructed

using various physical modeling products.

Contents

1.Description of the DC Servo Motor System

2.Estimating Parameters of the DC Motor Model

3.Importing Experimental Data

4.Selecting Parameters for Estimation

5.Defining an Estimation

6.Running the Estimation

7.Validation

8.Summary

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Objective The purpose of this lab is to experimentally determine

the frequency response of a DC servomotor system, which

includes the DC motor and amplifier. Experimental results will be

obtained to create a Bode plot for the servomotor system.

A transfer function can also be derived by fitting the Bode plot.

These results then can be used to design a suitable controller.

**DC Motor System Identification**Objective The purpose of this lab is to experimentally determine

the frequency response of a DC servomotor system, which

includes the DC motor and amplifier. Experimental results will be

obtained to create a Bode plot for the servomotor system.

A transfer function can also be derived by fitting the Bode plot.

These results then can be used to design a suitable controller.