Design Optimization and Resonance Analysis of Rectangular Structured Moving Magnet Linear Actuator

This article examines a new linear oscillating actuator (LOA) design that uses rectangular-shaped core materials and permanent magnets (PMs). The primary objective of the paper is to examine a novel LOA topology with a rectangular-shaped core and PMs as an alternative to the tubular LOA. A static core material is housed between the mover’s components and two stator cores with two coils, each of which is placed on either side of the mover. The dimensions of all the parameters are swept for optimization and the optimal parameter dimension is chosen based on the optimal value of the electromagnetic (EM) force. An analysis is done for output results like EM force and stroke. Parameters like input current, EM force and stroke-to-current ratio are investigated for different frequencies of the input electrical loading to demonstrate the significance of resonance operation. EM force per PM mass of the investigated design of LOA is 67 percent higher than that of a conventional rectangular-shaped LOA. Additionally, the EM force density of the proposed design is 23.8 percent higher than that of the conventional design of LOA. Furthermore, the stroke of the proposed LOA is also feasible and more than most of the designs of the LOA. Additionally, the proposed design of the LOA is simple in structure, low-cost, and feasible for fabrication.