Analytical and Experimental Study on Actuation Time of Displacement Amplified Electromagnetic Actuator

Nabae H., Karaguzel A. T., Endo G., Suzumori K.

IEEE International Conference on Advanced Intelligent Mechatronics (AIM), Munich, Germany, 3 - 07 July 2017, pp.963-968 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Munich
  • Country: Germany
  • Page Numbers: pp.963-968
  • Middle East Technical University Affiliated: Yes


This paper describes an analytical study undertaken on an electromagnetic actuator design with a displacement amplification mechanism by explaining the physical modeling and formulizing the actuation time of the actuator in terms of physical model variables. This is followed by an experimental investigation on the actuation time of the electromagnetic actuator. Increasing the gap between the electromagnet and armatures to increase the stroke of the electromagnetic actuator resulted in a drastic loss of the thrust force. The displacement amplification mechanisms were used to increase the stroke of the actuator without incurring high levels of loss in the thrust force. For the same load and final stroke of the actuator, the actuation time was observed to model the effect of amplification ratio on the actuator. Using the physical and mathematical modeling of the displacement amplified electromagnetic actuator and by formulating the actuation time, simulations were implemented that revealed the relationship between the actuation time and amplification ratio. The design of the experimental setup and methodology of the experimentation are explained to verify the simulation results and calculated relationship between the amplification ratio and actuation time in practice. The results of simulations and experimentations showed that there is an optimum point until which the amplification ratio can be increased while advancing from actuation time for the same load and final stroke of the actuator. The similarity between the simulation and experimental results proved that the value of this optimum point could be formulized and expressed in terms of other variables used to simulate the actuator.