Open Loop Step Response

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Overview

The objective of this experiment is to find a first-order model for a DC motor using the open loop step response. You will be given some of the motor parameters from the motor data sheet and will derive the rest of the parameters using the motor step response. You will then compare the actual response of the motor with the theoretical response.

Click on the Handout PDF link in the right sidebar to download the Experiment Handout. It describes all of the steps you will need to perform to complete the experiment. If you click on the Hardware/Parts link in the right sidebar, you will find a list of all parts needed to perform this experiment and places to order them. The 3-D Printer Files link provides files you can use to print the parts needed for the experiment.

What You Will Learn

After successful completion of this experiment, you will be able to find the step response of a DC motor experimentally, and you will be able to use the step response to develop a transfer function model for the motor. You will also learn to use computer simulation to verify the motor model.

Prerequisites

Before running this experiment, you should perform the following experiments: Simple DC Motor and Sampling and Data Acquisition.

Handout PDF

Hardware/Parts

Software/Code

3-D Printer Files