Qucs-core  0.0.19
vpm.cpp
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00001 /*
00002  * vpm.cpp - PM modulated AC voltage source class implementation
00003  *
00004  * Copyright (C) 2006, 2008 Stefan Jahn <stefan@lkcc.org>
00005  *
00006  * This is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2, or (at your option)
00009  * any later version.
00010  *
00011  * This software is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this package; see the file COPYING.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  *
00021  * $Id$
00022  *
00023  */
00024 
00025 #if HAVE_CONFIG_H
00026 # include <config.h>
00027 #endif
00028 
00029 #include "component.h"
00030 #include "vpm.h"
00031 
00032 using namespace qucs;
00033 
00034 vpm::vpm () : circuit (3) {
00035   type = CIR_VPM;
00036   setVSource (true);
00037   setVoltageSources (1);
00038 }
00039 
00040 void vpm::initSP (void) {
00041   allocMatrixS ();
00042   setS (NODE_1, NODE_2, 1.0);
00043   setS (NODE_2, NODE_1, 1.0);
00044   setS (NODE_3, NODE_3, 1.0);
00045 }
00046 
00047 void vpm::initDC (void) {
00048   allocMatrixMNA ();
00049   voltageSource (VSRC_1, NODE_1, NODE_2);
00050 }
00051 
00052 void vpm::initAC (void) {
00053   initDC ();
00054   nr_double_t a = getPropertyDouble ("U");
00055   nr_double_t p = getPropertyDouble ("Phase");
00056   setE (VSRC_1, qucs::polar (a, deg2rad (p)));
00057 }
00058 
00059 void vpm::initTR (void) {
00060   initDC ();
00061 }
00062 
00063 void vpm::calcTR (nr_double_t t) {
00064   nr_double_t f = getPropertyDouble ("f");
00065   nr_double_t p = getPropertyDouble ("Phase");
00066   nr_double_t d = getPropertyDouble ("M") * 2 * pi;
00067   nr_double_t a = getPropertyDouble ("U");
00068   nr_double_t v = real (getV  (NODE_3));
00069   nr_double_t b = 2 * pi * f * t + deg2rad (p) + v * d;
00070   nr_double_t u = a * std::sin (b);
00071   nr_double_t g = a * std::cos (b) * d;
00072   setE (VSRC_1, g * v - u);
00073   setC (VSRC_1, NODE_3, g);
00074 }
00075 
00076 // properties
00077 PROP_REQ [] = {
00078   { "U", PROP_REAL, { 1, PROP_NO_STR }, PROP_NO_RANGE },
00079   { "f", PROP_REAL, { 1e9, PROP_NO_STR }, PROP_POS_RANGE },
00080   { "M", PROP_REAL, { 1, PROP_NO_STR }, PROP_RNGII (0, 1) },
00081   PROP_NO_PROP };
00082 PROP_OPT [] = {
00083   { "Phase", PROP_REAL, { 0, PROP_NO_STR }, PROP_RNGII (-360, 360) },
00084   PROP_NO_PROP };
00085 struct define_t vpm::cirdef =
00086   { "PM_Mod", 3, PROP_COMPONENT, PROP_NO_SUBSTRATE, PROP_LINEAR, PROP_DEF };