Closed loop control of finite element model in magnetic system

Abstract

This paper presents an axisymmetric formulation of the circuit-coupled finite element method embedded in closed loop control system. The controller checks the current of the coil of the magnetic system after each time step and controls the applied voltage to reach the steady state faster. The results of the voltage driven finite element model are compared with the results from the analytical model. The control parameters for the proportional-integral-derivative controller were estimated using the step response of the system. Furthermore, the results of the closed loop system simulation show why the model accuracy is important in the controller design.

Finite element analysis of switched reluctance motor with rotor position based control

“…The summarization of externally forced currents in the windings is represented by J z . The equation describing the circuit supplying one phase of the switched reluctance motor may be written as [5], [10], [11]…”

“…One of the possibilities is the integration of the numerical field computation and the control system into one simulation tool in the frame of the Matlab-Simulink system simulator [8]. The controller can be realized in the Matlab/Simulink environment [8], [9], [10]. The field computation parts are implemented under the Matlab computing environment in C language and in own scripting language of the Matlab.…”

“…The field computation parts are implemented under the Matlab computing environment in C language and in own scripting language of the Matlab. It can be embedded in the Simulink environment easily [10].…”

Balancing control of a motorcycle

“…The balancing of Segways, hover-boards and unicycles is performed by Proportional Integral Derivative (PID) in [1,3,4] or by fuzzy logic [2] controllers. The use of an optimal controller, i.e., a Linear Quadratic Regulator (LQR) [10][11][12], is also frequent in engineering practice.…”

Controlling of payload swinging of an overhead crane

“…In engineering practice the Proportional-Integral-Derivative (PID) controller is widely applicable method in controlling tasks [5]. Feedback control is known to be less affected by parameter variations and disturbances.…”