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IDG-A32X/Systems/a320-autopilot.xml

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<?xml version="1.0" encoding="UTF-8" ?>
<!-- Airbus A320 Autopilot Configuration -->
<PropertyList>
<!-- PREDICTION FILTERS -->
<predict-simple>
<input>/autopilot/internal/nav1-track-error-deg</input>
<output>/autopilot/internal/nav1-track-error-lookahead-deg</output>
<seconds>8</seconds>
<filter-gain>0</filter-gain>
</predict-simple>
<!-- AUTOTHROTTLE -->
<!-- IAS hold -->
<logic>
<name>IAS hold logic</name>
<input>
<and>
<property>/autopilot/settings/autothrottle</property>
<equals>
<property>/autopilot/settings/speed-mode</property>
<value>0</value>
</equals>
<not>
<property>/autopilot/settings/speed</property>
</not>
</and>
</input>
<output>/autopilot/internal/speed-hold-kt</output>
</logic>
<pid-controller>
<name>IAS hold</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/speed-hold-kt</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/autopilot/internal/lookahead-5-sec-airspeed-kt</prop>
</input>
<reference>
<prop>/autopilot/settings/target-speed-kt</prop>
</reference>
<output>
<prop>/controls/engines/engine[0]/throttle</prop>
<prop>/controls/engines/engine[1]/throttle</prop>
</output>
<config>
<Kp>0.05</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>0</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- Mach hold -->
<logic>
<name>Mach hold logic</name>
<input>
<and>
<property>/autopilot/settings/autothrottle</property>
<equals>
<property>/autopilot/settings/speed-mode</property>
<value>1</value>
</equals>
<not>
<property>/autopilot/settings/speed</property>
</not>
</and>
</input>
<output>/autopilot/internal/speed-hold-mach</output>
</logic>
<pid-controller>
<name>Mach hold</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/speed-hold-mach</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/velocities/mach</prop>
</input>
<reference>
<prop>/autopilot/settings/target-speed-mach</prop>
</reference>
<output>
<prop>/controls/engines/engine[0]/throttle</prop>
<prop>/controls/engines/engine[1]/throttle</prop>
</output>
<config>
<Kp>20</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>0</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- AUTOPILOT -->
<!-- Heading hold -->
<!-- Magnetic heading -->
<logic>
<name>Magnetic heading hold stage 1 logic</name>
<input>
<and>
<equals>
<property>/autopilot/settings/heading</property>
<value>dg-heading-hold</value>
</equals>
<equals>
<property>/autopilot/settings/heading-mode</property>
<value>0</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-deg-stage1</output>
</logic>
<logic>
<name>Magnetic heading hold stage 2 logic</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/heading</property>
<value>dg-heading-hold</value>
</equals>
<equals>
<property>/autopilot/settings/heading-mode</property>
<value>0</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-deg</output>
</logic>
<pid-controller>
<name>Magnetic heading hold stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-deg-stage1</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/autopilot/internal/fdm-heading-bug-error-deg</prop>
</input>
<reference>
<value>0</value>
</reference>
<output>
<prop>/autopilot/internal/target-roll-deg</prop>
</output>
<config>
<Kp>-2</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>6</Ti>
<Td>0.00001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<pid-controller>
<name>Magnetic heading hold stage 2</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-deg</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/orientation/roll-deg</prop>
</input>
<reference>
<prop>/autopilot/internal/target-roll-deg</prop>
</reference>
<output>
<prop>/controls/flight/aileron</prop>
</output>
<config>
<Kp>0.01</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>6</Ti>
<Td>0.00001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- Ground track hold -->
<logic>
<name>Ground track heading hold stage 1 logic</name>
<input>
<and>
<equals>
<property>/autopilot/settings/heading</property>
<value>dg-heading-hold</value>
</equals>
<equals>
<property>/autopilot/settings/heading-mode</property>
<value>1</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-deg-stage1</output>
</logic>
<logic>
<name>Ground track heading hold stage 2 logic</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/heading</property>
<value>dg-heading-hold</value>
</equals>
<equals>
<property>/autopilot/settings/heading-mode</property>
<value>1</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-deg</output>
</logic>
<filter>
<name>Ground track error computer/normalizer</name>
<debug type="bool">false</debug>
<type>gain</type>
<gain>1.0</gain>
<input>
<property>/autopilot/settings/heading-bug-deg</property>
<offset>
<property>/orientation/track-magnetic-deg</property>
<scale>-1</scale>
</offset>
</input>
<output>/autopilot/internal/fdm-track-bug-error-deg</output>
<period>
<min>-180</min>
<max>180</max>
</period>
</filter>
<pid-controller>
<name>Ground track hold stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-track-stage1</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/autopilot/internal/fdm-track-bug-error-deg</prop>
</input>
<reference>
<value>0</value>
</reference>
<output>
<prop>/autopilot/internal/target-roll-deg</prop>
</output>
<config>
<Kp>-1.5</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>15</Ti>
<Td>0.000000001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<pid-controller>
<name>Ground track hold stage 2</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-track</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/orientation/roll-deg</prop>
</input>
<reference>
<prop>/autopilot/internal/target-roll-deg</prop>
</reference>
<output>
<prop>/controls/flight/aileron</prop>
</output>
<config>
<Kp>0.01</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.000000001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- NAV hold -->
<logic>
<name>NAV hold logic</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/heading</property>
<value>nav1-hold</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-nav</output>
</logic>
<pid-controller>
<name>NAV hold stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/settings/heading</prop>
<value>nav1-hold</value>
</enable>
<input>
<prop>/autopilot/internal/nav1-track-error-deg</prop>
</input>
<reference>
<value>0</value>
</reference>
<output>
<prop>/autopilot/internal/target-roll-deg</prop>
</output>
<config>
<Kp>-1.5</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>15</Ti>
<Td>0.000000001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<pid-controller>
<name>NAV hold stage 2</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-nav</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/orientation/roll-deg</prop>
</input>
<reference>
<prop>/autopilot/internal/target-roll-deg</prop>
</reference>
<output>
<prop>/controls/flight/aileron</prop>
</output>
<config>
<Kp>0.01</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.000000001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- True heading [LNAV] -->
<logic>
<name>True heading hold logic</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/heading</property>
<value>true-heading-hold</value>
</equals>
</and>
</input>
<output>/autopilot/internal/heading-hold-true</output>
</logic>
<pid-controller>
<name>True heading hold stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/settings/heading</prop>
<value>true-heading-hold</value>
</enable>
<input>
<prop>/autopilot/internal/true-heading-error-deg</prop>
</input>
<reference>
<value>0</value>
</reference>
<output>
<prop>/autopilot/internal/target-roll-deg</prop>
</output>
<config>
<Kp>-5</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<pid-controller>
<name>True heading hold stage 2</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/heading-hold-true</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/orientation/roll-deg</prop>
</input>
<reference>
<prop>/autopilot/internal/target-roll-deg</prop>
</reference>
<output>
<prop>/controls/flight/aileron</prop>
</output>
<config>
<Kp>0.01</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- PITCH -->
<!-- Glideslope hold -->
<logic>
<name>Glideslope hold logic</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/altitude</property>
<value>gs1-hold</value>
</equals>
</and>
</input>
<output>/autopilot/internal/glideslope-hold</output>
</logic>
<pid-controller>
<name>Glideslope hold</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/glideslope-hold</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/velocities/vertical-speed-fps</prop>
</input>
<reference>
<prop>/instrumentation/nav[0]/gs-rate-of-climb</prop>
</reference>
<output>
<prop>/controls/flight/elevator-trim</prop>
</output>
<config>
<Kp>-0.0075</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- Altitude hold -->
<logic>
<name>Altitude hold</name>
<input>
<and>
<property>/autopilot/settings/engaged</property>
<equals>
<property>/autopilot/settings/altitude</property>
<value>altitude-hold</value>
</equals>
</and>
</input>
<output>/autopilot/internal/altitude-hold</output>
</logic>
<logic>
<name>Altitude hold climb</name>
<input>
<greater-than-equals>
<property>/autopilot/settings/vertical-speed-fpm</property>
<value>0</value>
</greater-than-equals>
</input>
<output>/autopilot/internal/altitude-hold-climb</output>
</logic>
<logic>
<name>Altitude hold descend</name>
<input>
<less-than>
<property>/autopilot/settings/vertical-speed-fpm</property>
<value>0</value>
</less-than>
</input>
<output>/autopilot/internal/altitude-hold-descend</output>
</logic>
<pi-simple-controller>
<name>Altitude hold climb stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/altitude-hold-climb</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/instrumentation/altimeter/indicated-altitude-ft</prop>
</input>
<reference>
<prop>/autopilot/settings/target-altitude-ft</prop>
</reference>
<output>
<prop>/autopilot/internal/target-climb-rate-fps</prop>
</output>
<config>
<Kp>0.3</Kp>
<Ki>0</Ki>
<u_min>-1.667</u_min>
<u_max>
<prop>/autopilot/settings/vertical-speed-fpm</prop>
<scale>0.01667</scale>
</u_max>
</config>
</pi-simple-controller>
<pi-simple-controller>
<name>Altitude hold descend stage 1</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/altitude-hold-descend</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/instrumentation/altimeter/indicated-altitude-ft</prop>
</input>
<reference>
<prop>/autopilot/settings/target-altitude-ft</prop>
</reference>
<output>
<prop>/autopilot/internal/target-climb-rate-fps</prop>
</output>
<config>
<Kp>0.3</Kp>
<Ki>0</Ki>
<u_min>
<prop>/autopilot/settings/vertical-speed-fpm</prop>
<scale>0.01667</scale>
</u_min>
<u_max>1.667</u_max>
</config>
</pi-simple-controller>
<pid-controller>
<name>Altitude hold stage 2</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/internal/altitude-hold</prop>
<value type="bool">true</value>
</enable>
<input>
<prop>/velocities/vertical-speed-fps</prop>
</input>
<reference>
<prop>/autopilot/internal/target-climb-rate-fps</prop>
</reference>
<output>
<prop>/controls/flight/elevator-trim</prop>
</output>
<config>
<Kp>-0.001</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>5</Ti>
<Td>0.00001</Td>
<u_min>-1</u_min>
<u_max>1</u_max>
</config>
</pid-controller>
<!-- Flight director controllers -->
<pid-controller>
<name>Glideslope hold flight director</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/settings/altitude</prop>
<value>gs1-hold</value>
</enable>
<input>
<prop>/velocities/vertical-speed-fps</prop>
</input>
<reference>
<prop>/instrumentation/nav[0]/gs-rate-of-climb</prop>
</reference>
<output>
<prop>/autopilot/internal/target-pitch-deg</prop>
</output>
<config>
<Kp>0.1875</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<pid-controller>
<name>Altitude hold stage 2 flight director</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/settings/altitude</prop>
<value>altitude-hold</value>
</enable>
<input>
<prop>/velocities/vertical-speed-fps</prop>
</input>
<reference>
<prop>/autopilot/internal/target-climb-rate-fps</prop>
</reference>
<output>
<prop>/autopilot/internal/target-pitch-deg</prop>
</output>
<config>
<Kp>0.25</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-25</u_min>
<u_max>25</u_max>
</config>
</pid-controller>
<filter>
<name>Flight director pitch computer</name>
<debug type="bool">false</debug>
<type>gain</type>
<gain>1.0</gain>
<input>
<expression>
<dif>
<property>/autopilot/internal/target-pitch-deg</property>
<property>/orientation/pitch-deg</property>
</dif>
</expression>
</input>
<output>/autopilot/internal/flight-director-pitch-deg</output>
</filter>
<filter>
<name>Flight director roll computer</name>
<debug type="bool">false</debug>
<type>gain</type>
<gain>1.0</gain>
<input>
<expression>
<dif>
<property>/autopilot/internal/target-roll-deg</property>
<property>/orientation/roll-deg</property>
</dif>
</expression>
</input>
<output>/autopilot/internal/flight-director-roll-deg</output>
</filter>
</PropertyList>