Electromechanical Regenerative Actuator With Fault-Tolerance Capability for Automotive Chassis Applications

This paper investigates an electromechanical regenerative (EMR) actuator for automotive chassis applications. The actuator system comprises an electric machine, a ball screw, and a controller. The designs of these three components are examined first. Control algorithms are then developed for both converter and inverter topologies. A prototype actuator has been fabricated and tested in the laboratory. Test results indicate that the regenerative system achieves the required performance and has the capability to regenerate power to improve real-world fuel economy.