2018 Volume 49 Issue 1 Pages 18-25
In the previous report, a newly designed electro-magnetic proportional actuator composed of an armature and a stator with a cylindrical two-step pole to control oil hydraulic valve was suggested. This actuator generates a large thrust force. The principal of generating the force was explained in detail in the report, however, the characteristics of heat transfer and thrust force of the actuator, in the case of varying the outer size, have not been examined. In this study, when the size of the actuator is varied, the characteristics of heat transfer in the case of continuous energization and the thrust force are examined. As a result, the characteristic length of the actuator’s relationship with the electric power consumption, thrust force and working stroke became clear. A method in making diagrams on the relationship between the outer size and performances of the actuator is suggested. In conclusion, based on the request of performance values of the actuator, the outline of designs may be carried out easily using the above-mentioned relationships.
