Modeling of a Heavy-Duty Roller Screw Actuator System and Investigation of Its Energy Consumption

Özet

Electro-hydraulic or electromechanical actuators are commonly used to drive high-power-density systems. Although electro-hydraulic systems continue to be widely used, especially in mobile and very high-power density applications, it has been observed that the use of electromechanical systems is increasing in industrial applications up to specific load values. In linear motion heavy-duty actuator systems, roller screw mechanisms are preferred over ball screw applications due to their high load-carrying capacities. These systems find application in various industries such as automotive, food, and aerospace and for metal cutting, pressing, robotic, CNC machining, and automation purposes. With the development of Industry 4.0, 5.0, and digital twin applications, it can be said that these types of actuators will be used more in industrial applications. In this study, we modeled an electric motor-driven heavy-duty roller screw system in the MATLAB/Simulink/Simscape environment first. We used the basic system components, such as an electric motor, gear, and roller screw mechanism, and the opposite load. We examined the closed-loop speed control of the system according to a user-defined trapezoidal speed profile. We also considered the friction force, external disturbances, and no-load torque in the modeling. Subsequently, we analyzed the system response and the effect of system parameters on energy consumption through the created model.