Parameter Identification and Reduction of DC FESTO EMMS-AS-70-MK-LS-RRB Block Diagram in Electrical Control System Application

Abstract

DC motors are one of the most commonly used actuator components in control systems, particularly in industrial automation, robotics, and precision electrical systems. Their ability to provide fast, linear speed and torque control makes them ideal for applications requiring real-time response. However, to design an accurate and stable control system, an understanding of the dynamic characteristics of DC motors is essential. Therefore, a mathematical approach is required through system modeling that physically reflects the relationship between the motor's input and output variables. This study aims to identify DC motor parameters based on the technical data of the FESTO EMMS-AS-70-MK-LS-RRB servo motor, and to build a mathematical model that includes the electrical and mechanical aspects of the system. Parameters such as armature resistance and inductance, torque constant, back electromotive force constant (Back EMF), moment of inertia, and damping coefficient are analyzed theoretically to be included in the differential model. This model is then transformed into the Laplace domain and arranged into a block diagram. Next, a block diagram reduction process is performed to simplify the system into first- and second-order transfer function forms, which represent the system dynamics in a concise yet informative manner. Simulations are performed using MATLAB/Simulink software to observe the system's response to step inputs and parameter variations. The results show that this approach not only helps in designing a more efficient and accurate control system but also contributes to the controller tuning process before actual implementation.