A NOVEL LINEAR ELECTROMAGNETIC ACTUATOR WITH COMBINED LINEAR AND RECIPROCATING MOTION FOR MECHATRONIC SYSTEMS

Abstract

This work presents a novel linear electromagnetic actuator designed to provide both linear and reciprocating motion within a single compact system. The proposed design addresses the limitations of classical electromagnetic linear drives, which typically exhibit discontinuous motion, high mechanical wear, low dynamic performance, and limited load capacity. The developed actuator integrates two traction electromagnets positioned on both sides of the ferromagnetic armature, a system of four guiding rollers, flexible cables, and a set of controllable electromagnetic and fixing clutches enabling precise control of motion and positioning.

The combination of electromagnetic traction forces and controlled engagement of the clutches ensures continuous, smooth displacement of the working element without interruption for reversal or preparation phases. The governing electromagnetic force is determined by variations in the magnetic conductivity of the air gap and the additional flux leakage between the armature and the housing, which increases the resulting thrust and improves efficiency. The actuator enables independent control of motion direction, step length, and fixation, which significantly expands its functional capabilities.

Comparative analysis with known solutions demonstrates that the proposed design offers substantial improvements in accuracy, adaptability, and operational reliability. The ability to generate linear and reciprocating movements simultaneously allows the replacement of multiple actuators in robotic and automated systems, reducing structural complexity and overall mass. Due to its versatility, the device can be effectively applied in conveyors, industrial robots, CNC modules, and high-precision mechatronic systems.