Application of Linear Electromagnetic Actuators in Vehicular Suspensions

This study comprehensively describes the application of linear electromagnetic actuators in automotive suspension systems, focusing on the electromagnetic force necessary in suspension systems operating in passive, semi-active, and active modes and their capability for energy regeneration. The use of electromagnetic actuators as an alternative to traditional shock absorbers makes easy the energy harvesting that is typically lost during vertical vehicle displacement. An initial sizing technique for dimensioning electromagnetic actuators is applied to estimate the requirements for heavy vehicles. Experimental tests are conducted to validate the proposed method and assess the performance of the electromagnetic actuator in the suspension system for passive, semi-active, and active operations. A suitable extrapolation of the validated data is performed to determine the feasibility of the application of the proposed solution for heavy vehicles and identify potential applications and markets based on the road conditions of the ISO 8608 standard. This study offers a comprehensive approach to determining the actuator force for the suspension system and/or studying its potential for energy regeneration. As a result, it becomes possible to analyze the viability of the actuator replacement and provides important insights for further research and development.