Prediction of Magnetic Hysteresis in the Force of a Prebiased E-Core Reluctance Actuator

Abstract

Magnetic hysteresis in the force of a prebiased E-core reluctance actuator is researched using three analysis methods. Simulations are performed with a 2-D/3-D finite-element method (FEM); and two semianalytic methods are evaluated, namely, a generalization of the classical Preisach model, which is combined with a dynamic magnetic equivalent circuit (MEC) method, and a complex impedance model, which is combined with a static MEC model. Ultimately, the FEM simulations and analytic models are examined by a comparison with force measurements performed with a piezoelectric load cell. Index Terms-Finite-element method (FEM), magnetic hysteresis, Preisach model, reluctance actuator.

Real-Time Electromagnetic Estimation for Reluctance Actuators

“…Two conclusions can be drawn from the graph: one, that magnetic saturation exists and has a great impact in the dynamics of the device, and second, that the relation between i and λ for any given position is not static but depends on past values. This, as explained in some previous works [19], [20], is due both to magnetic hysteresis and to eddy currents.…”

An efficient dynamical model of reluctance actuators with flux fringing and magnetic hysteresis

“…However, most works neglect the effect of the magnetic hysteresis [4,5,6]. Some works do propose hysteresis models for actuators, but neglect the motion dynamics [7,8,9]. Recently, [2] proposed a model of the mechanical and electromagnetic dynamics, with special emphasis on the derived hysteresis solution based on the generalized Preisach model (GPM) to characterize the magnetic hysteresis.…”

On the Stability of Electromechanical Switching Devices: An Analytic Study of Hysteretic Switching Behaviors

“…Although there are some reluctance actuators designed to operate in continuous mode [33], all low-cost switching devices based on this technology are intended to switch between the two limit positions. This category includes electromechanical relays, whose purpose is to open and close electrical connections, and solenoid actuators, which are widely used as on/off valves in hydraulic and pneumatic circuits.…”