1 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
7 ------------- Copyright (C) 2000 -------------
9 This program is free software; you can redistribute it and/or modify it under
10 the terms of the GNU Lesser General Public License as published by the Free Software
11 Foundation; either version 2 of the License, or (at your option) any later
14 This program is distributed in the hope that it will be useful, but WITHOUT
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
19 You should have received a copy of the GNU Lesser General Public License along with
20 this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21 Place - Suite 330, Boston, MA 02111-1307, USA.
23 Further information about the GNU Lesser General Public License can also be found on
24 the world wide web at http://www.gnu.org.
26 FUNCTIONAL DESCRIPTION
27 --------------------------------------------------------------------------------
30 --------------------------------------------------------------------------------
32 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
33 COMMENTS, REFERENCES, and NOTES
34 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
36 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
38 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
40 #include "FGDeadBand.h"
41 #include "input_output/FGXMLElement.h"
42 #include "input_output/FGPropertyManager.h"
49 static const char *IdSrc = "$Id$";
50 static const char *IdHdr = ID_DEADBAND;
52 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
54 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
56 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
58 FGDeadBand::FGDeadBand(FGFCS* fcs, Element* element) : FGFCSComponent(fcs, element)
62 WidthPropertyNode = 0;
63 WidthPropertySign = 1.0;
67 if ( element->FindElement("width") ) {
68 width_string = element->FindElementValue("width");
69 if (!is_number(width_string)) { // property
70 if (width_string[0] == '-') {
71 WidthPropertySign = -1.0;
72 width_string.erase(0,1);
74 WidthPropertyNode = PropertyManager->GetNode(width_string);
76 width = element->FindElementValueAsNumber("width");
80 if (element->FindElement("gain")) {
81 gain = element->FindElementValueAsNumber("gain");
84 FGFCSComponent::bind();
88 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
90 FGDeadBand::~FGDeadBand()
95 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
97 bool FGDeadBand::Run(void )
99 Input = InputNodes[0]->getDoubleValue() * InputSigns[0];
101 if (WidthPropertyNode != 0) {
102 width = WidthPropertyNode->getDoubleValue() * WidthPropertySign;
105 if (Input < -width/2.0) {
106 Output = (Input + width/2.0)*gain;
107 } else if (Input > width/2.0) {
108 Output = (Input - width/2.0)*gain;
115 if (IsOutput) SetOutput();
120 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
121 // The bitmasked value choices are as follows:
122 // unset: In this case (the default) JSBSim would only print
123 // out the normally expected messages, essentially echoing
124 // the config files as they are read. If the environment
125 // variable is not set, debug_lvl is set to 1 internally
126 // 0: This requests JSBSim not to output any messages
128 // 1: This value explicity requests the normal JSBSim
130 // 2: This value asks for a message to be printed out when
131 // a class is instantiated
132 // 4: When this value is set, a message is displayed when a
133 // FGModel object executes its Run() method
134 // 8: When this value is set, various runtime state variables
135 // are printed out periodically
136 // 16: When set various parameters are sanity checked and
137 // a message is printed out when they go out of bounds
139 void FGDeadBand::Debug(int from)
141 if (debug_lvl <= 0) return;
143 if (debug_lvl & 1) { // Standard console startup message output
144 if (from == 0) { // Constructor
145 cout << " INPUT: " << InputNodes[0]->getName() << endl;
146 if (WidthPropertyNode != 0) {
147 cout << " DEADBAND WIDTH: " << WidthPropertyNode->GetName() << endl;
149 cout << " DEADBAND WIDTH: " << width << endl;
151 cout << " GAIN: " << gain << endl;
153 for (unsigned int i=0; i<OutputNodes.size(); i++)
154 cout << " OUTPUT: " << OutputNodes[i]->getName() << endl;
158 if (debug_lvl & 2 ) { // Instantiation/Destruction notification
159 if (from == 0) cout << "Instantiated: FGDeadBand" << endl;
160 if (from == 1) cout << "Destroyed: FGDeadBand" << endl;
162 if (debug_lvl & 4 ) { // Run() method entry print for FGModel-derived objects
164 if (debug_lvl & 8 ) { // Runtime state variables
166 if (debug_lvl & 16) { // Sanity checking
168 if (debug_lvl & 64) {
169 if (from == 0) { // Constructor
170 cout << IdSrc << endl;
171 cout << IdHdr << endl;