Designing a Control System Block Diagram Using Simulink Toolbox

This article provides a comprehensive guide on designing efficient control system block diagrams using MATLAB's Simulink toolbox. Our primary objective involves creating a dynamic structural block diagram for a double closed-loop DC motor speed regulation system. Based on the dual-loop DC motor speed control model from undergraduate "Motor Drive and Motion Control" courses, we detail the modeling process using Simulink's graphical interface components like transfer function blocks, PID controllers, and feedback loops. The simulation implementation involves configuring solver parameters and using scope blocks to visualize system response. Comparative analysis confirms our simulation results match theoretical textbook predictions, validating the design's effectiveness. Furthermore, we explore practical implementation strategies for deploying this control system in industrial applications to enhance production efficiency and quality. This technical walkthrough serves as a valuable reference for readers interested in control system design, demonstrating key Simulink functions such as subsystem creation, signal routing, and parameter tuning for optimal performance.