Dynamic response analysis of a linear solenoid actuator

Abstract

This paper proposes a computational method for predicting the dynamic response characteristics of a long strokelinear 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 element method (FEM). n t e 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 4.8V is fed, however, the error remains less than 2% when the applied voltage is higher; 5.8V and 6.8V. 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.

Development of Tri‐Stable Rotary Solenoid Actuator

“…Magnetic characteristics of solenoids are strongly affected by the shape and nonlinearity of the core and, as such, electromagnetic field analysis based on the limiting element method is an effective analysis method. However, effort and calculation time is needed for parameter surveying such as shape modeling and lattice division, configuring motion settings such as slide meshes and deformation meshes, and coupling with power supply circuits.…”

Development of a simulation method for dynamic characteristics of fuel injector

“…In the 1-D and lumped constant model of fuel injector, motion of the plunger and the linear magnetic circuit are coupled [1] which may not be applicable when the magnetization is saturated. Reference [2] shows FEM method for simulating a long stroke solenoid actuator. To prevent meshes from being distored, some typical mesh patterns are prepared and the nearest pattern is automatically searched and modified.…”

“…Because the time period of valve opening is brief, the magnetic aftereffect is not negligible. To predict the dynamic characteristics of a solenoid actuator, various computational methods have been proposed, such as 1-D and lumped constant models [1] and 2-D or 3-D FEM and BEM methods [2], [3]. In the 1-D and lumped constant model of fuel injector, motion of the plunger and the linear magnetic circuit are coupled [1] which may not be applicable when the magnetization is saturated.…”

Design of a bidirectional actuator for a nanopositioning system with a permanent magnet and an electromagnet

“…9-11 A solenoid actuator generally has a onedirection attraction force caused by an electromagnet from its base level with a low electromechanical time constant and a nonlinear motion in millimeters. 12 Due to its restrictive mechanism, the use of a solenoid actuator is not suitable in precision systems, unlike the use of the VCM. In other words, solenoid actuators have mainly been used in many industrial areas except in precision systems, such as in a switch.…”