What This Document Is
This document is a lab report detailing an experiment to characterize a brushed DC motor. It outlines a process for developing a model of a DC motor’s behavior and comparing theoretical predictions to real-world performance. The report focuses on understanding the relationship between applied voltage, current, torque, and motor speed.
Why This Document Matters
This report is valuable for students and engineers studying electrical engineering, robotics, or control systems. It’s particularly relevant within a digital control course, as DC motors are fundamental components in many controlled systems. Understanding DC motor characteristics is crucial for designing and implementing effective control algorithms. This lab provides a practical application of theoretical concepts learned in coursework.
Common Limitations or Challenges
This document presents a specific experimental setup and analysis. It doesn’t cover all types of DC motors (e.g., brushless DC motors) or advanced control techniques. The model developed is a simplified representation of a complex physical system, and real-world motors may exhibit additional complexities not accounted for in this report. It also relies on pre-existing calibration curves, so the process of *creating* those curves is not fully detailed.
What This Document Provides
The full document includes: a theoretical introduction to DC motor modeling, a detailed description of the experimental procedure used to characterize a DC motor with an Arduino and tachometer, the circuit model used for analysis (Figure 1), dynamic equations and their solutions (Figures 2 & 3), calibration curves for the driver motor (Figure 4) and tachometer motor (Figure 5), and a discussion of the experimental results, including comparisons between theoretical and experimental values for parameters like time constant and motor speed constant. This preview does *not* include the full experimental data, detailed calculations, or the complete calibration curves. It also does not provide the Arduino code used in the experiment.