Machinekit Documentation
HAL Component — CLARKE2
INSTANTIABLE COMPONENTS — General
All instantiable components can be loaded in two manners
Using loadrt with or without count= | names= parameters as per legacy components
Using newinst, which names the instance and allows further parameters and arguments
primarily pincount= which can set the number of pins created for that instance (where applicable)
NAME
clarke2 — Two input version of Clarke transform
SYNOPSIS
clarke2
USAGE SYNOPSIS
loadrt clarke2
OR
newinst clarke2 <newinstname> [ pincount=N | iprefix=prefix ] [instanceparamX=X | argX=X ]
( args in [ ] denote possible args and parameters, may not be used in all components )
DESCRIPTION
The Clarke transform can be used to translate a vector quantity from a three phase system (three components 120 degrees apart) to a two phase Cartesian system. .P \fBclarke2\fR implements a special case of the Clarke transform, which only needs two of the three input phases. In a three wire three phase system, the sum of the three phase currents or voltages must always be zero. As a result only two of the three are needed to completely define the current or voltage. \fBclarke2\fR assumes that the sum is zero, so it only uses phases A and B of the input. Since the H (homopolar) output will always be zero in this case, it is not generated.
FUNCTIONS
clarke2.N.funct ( OR <newinstname>.funct (requires a floating-point thread) )
PINS
clarke2.N.a float in ( OR <newinstname>.a float in )
clarke2.N.b float in ( OR <newinstname>.b float in ) - first two phases of three phase input
clarke2.N.x float out ( OR <newinstname>.x float out )
clarke2.N.y float out ( OR <newinstname>.y float out ) - cartesian components of output
SEE ALSO
\fBclarke3\fR for the general case, \fBclarkeinv\fR for the inverse transform.
LICENCE
GPL