electronics/simulation/voltagesignal.cpp

0001 /***************************************************************************
0002  *   Copyright (C) 2003-2004 by David Saxton                               *
0003  *   david@bluehaze.org                                                    *
0004  *                                                                         *
0005  *   This program is free software; you can redistribute it and/or modify  *
0006  *   it under the terms of the GNU General Public License as published by  *
0007  *   the Free Software Foundation; either version 2 of the License, or     *
0008  *   (at your option) any later version.                                   *
0009  ***************************************************************************/
0010
0011 #include "voltagesignal.h"
0012 #include "elementset.h"
0013
0014 VoltageSignal::VoltageSignal(const double delta, const double voltage)
0015     : Reactive::Reactive(delta)
0016 {
0017     m_voltage = voltage;
0018     m_numCNodes = 2;
0019     m_numCBranches = 1;
0020 }
0021
0022 VoltageSignal::~VoltageSignal()
0023 {
0024 }
0025
0026 void VoltageSignal::setVoltage(const double v)
0027 {
0028     m_voltage = v;
0029 }
0030
0031 void VoltageSignal::add_initial_dc()
0032 {
0033     if (!b_status)
0034         return;
0035
0036     A_b(0, 0) = -1;
0037     A_c(0, 0) = -1;
0038     A_b(1, 0) = 1;
0039     A_c(0, 1) = 1;
0040 }
0041
0042 void VoltageSignal::time_step()
0043 {
0044     if (!b_status)
0045         return;
0046     b_v(0) = m_voltage * advance(m_delta);
0047 }
0048
0049 void VoltageSignal::updateCurrents()
0050 {
0051     if (!b_status)
0052         return;
0053     m_cnodeI[1] = p_cbranch[0]->i;
0054     m_cnodeI[0] = -m_cnodeI[1];
0055 }