Dynamic response analysis of a linear solenoid actuator

This paper proposes a computational method for predicting the dynamic response characteristics of a long stroke-linear solenoid actuator with complicated shaped armature. In this method, the magnetic field is coupled with the electrical supply and the mechanical movement of the actuator, employing the axisymmetric finite clement method (FEM). The influence of applied voltage on the response characteristics are investigated. As the result of that, computational error of 22.8% arises when applied voltage of 4.8 V is fed, however, the error remains less than 2% when the applied voltage is higher; 5.8 V and 6.8 V. These results verify the utility of this method. In addition, the influence of the control method on transient response during positioning control is also examined, and the validity of PID (proportional, integral and differential) control is confirmed.