@tikibar
Thx.
<!-- Elevator Trim Controller for FLCH -->
<pid-controller>
<name>Elevator Control</name>
<debug>false</debug>
<enable>
<prop>/autopilot/locks/altitude</prop>
<value>altitude-with-ias</value>
</enable>
<input>
<prop>/orientation/pitch-deg</prop>
</input>
<reference>
<prop>/autopilot/internal/target-pitch-deg</prop>
</reference>
<output>
<prop>/controls/flight/elevator-trim</prop>
</output>
<config>
<Kp>-0.015</Kp>
<beta>1.0</beta>
<alpha>0.1</alpha>
<gamma>0.0</gamma>
<Ti>1.0</Ti>
<Td>0.00001</Td>
<u_min>
<value>-0.8</value>
</u_min>
<u_max>
<value>0.8</value>
</u_max>
</config>
</pid-controller>
<filter>
<name>Elevator control filter</name>
<debug>false</debug>
<feedback-if-disabled>true</feedback-if-disabled>
<initialize-to>output</initialize-to>
<enable>
<prop>/autopilot/locks/altitude</prop>
<value>altitude-with-ias</value>
</enable>
<input>
<property>/controls/flight/elevator-trim-filter</property>
</input>
<output>/controls/flight/elevator-trim</output>
<type>noise-spike</type>
<max-rate-of-change>0.5</max-rate-of-change>
</filter>
<!-- Altitude with IAS (controls/switches/vertset = 4)
<pid-controller>
<name>Speed with pitch IAS</name>
<debug type="bool">false</debug>
<enable>
<prop>/autopilot/locks/altitude</prop>
<value>altitude-with-ias</value>
</enable>
<input>
<prop>autopilot/internal/lookahead-10-sec-airspeed-kt</prop>
</input>
<reference>
<prop>/autopilot/settings/target-speed-kt</prop>
</reference>
<output>
<prop>/autopilot/internal/target-pitch-deg</prop>
</output>
<config>
<Kp>-0.08</Kp>
<beta>1</beta>
<alpha>0.1</alpha>
<gamma>0</gamma>
<Ti>10</Ti>
<Td>0.00001</Td>
<u_min>-10</u_min>
<u_max>15</u_max>
</config>
</pid-controller>
Kp should probably go up a little, but you don't want to make it overly sensitive.
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