Variable Resistor with Variable Series Inductor
Purpose
Variable resistor with variable series inductor.
Library
Nonlinear
Description
This component models a variable resistor with a variable inductor connected in
series. The resistance and inductance are determined by the continuous signals fed
into the inputs of the component. The voltage across this component is determined
by the equation

Therefore, the control signal for the inductor is a vector twice as wide as the width of
the component. It contains both the momentary inductance values and their
derivatives with respect to time:
. It is the
responsibility of the user to provide the correct derivatives.
Note
- This component is based on a voltage controlled current source. It
may therefore not be connected in series with other current sources or
inductors.
- The control signal for the momentary inductance values must be
continuous. Discontinuous changes will produce non-physical results.
Parameters and Dialog Box
-
Width
- The width of the electrical ports resp. the number of resistors/inductors
represented by the component.
-
Initial current
- The initial current through the component at simulation start, in
amperes (A). This parameter may either be a scalar or a vector with the width
of the component. The direction of a positive initial current is indicated by a
small arrow in the component symbol. The default of the initial current is 0.
Probe Signals
-
Inductor current
- The current flowing through the inductor, in A. The direction
of a positive current corresponds to the small arrow at one of the terminals.