wow .. more friends with same problema.
well, i simulated this problem and re-checked all my config.
i changed some parameter in V_CTL and the simulation are working
very well for now.
try change your v_ctl with this parameters and publish the
result here :
<section name="VERTICAL CONTROL" prefix="V_CTL_">
<define name="POWER_CTL_BAT_NOMINAL" value="16.0"
unit="volt"/>
<!-- outer loop -->
<define name="ALTITUDE_PGAIN" value="0.05"/>
<!-- <define name="ALTITUDE_PGAIN"
value="0.0869999974966" unit="(m/s)/m"/>-->
<define name="ALTITUDE_MAX_CLIMB" value="4."
unit="m/s"/>
<!-- auto throttle inner loop -->
<define name="AUTO_THROTTLE_NOMINAL_CRUISE_THROTTLE"
value="0.5"/>
<define name="AUTO_THROTTLE_MIN_CRUISE_THROTTLE"
value="0.4"/>
<define name="AUTO_THROTTLE_MAX_CRUISE_THROTTLE"
value="0.9"/>
<define name="AUTO_THROTTLE_LOITER_TRIM" value="2000"
unit="pprz_t"/> <!-- elevador trim para voo loiter
(lento) -->
<define name="AUTO_THROTTLE_DASH_TRIM" value="-1500"
unit="pprz_t"/> <!-- elevador trim para voo dash (rapido)
-->
<define name="AUTO_THROTTLE_CLIMB_THROTTLE_INCREMENT"
value="0.15" unit="%/(m/s)"/> <!-- 0.1 -->
<define name="AUTO_THROTTLE_PGAIN" value="0.008"
unit="%/(m/s)"/> <!--0.02-->
<define name="AUTO_THROTTLE_IGAIN" value="0.25"/>
<define name="AUTO_THROTTLE_PITCH_OF_VZ_PGAIN"
value="0.14"/> <!-- 0.05 pitch devido a erro altitude
-->
<!-- auto airspeed and altitude inner loop -->
<define name="AUTO_GROUNDSPEED_SETPOINT" value="15.0"
unit="m/s"/>
<define name="AUTO_GROUNDSPEED_PGAIN" value="0.75"/>
<define name="AUTO_GROUNDSPEED_IGAIN" value="0.25"/>
<define name="AUTO_PITCH_PGAIN" value="0.145"/>
<define name="AUTO_PITCH_IGAIN" value="0.025"/>
<define name="AUTO_PITCH_MAX_PITCH"
value="RadOfDeg(25)"/>
<define name="AUTO_PITCH_MIN_PITCH"
value="RadOfDeg(-25)"/>
<define name="THROTTLE_SLEW_LIMITER" value="2" unit="s"/>
</section>
Date: Fri, 1 Jun 2012 09:22:40 +0530
From:
address@hidden
To:
address@hidden
Subject: Re: [Paparazzi-devel] another fatal crash
Hi all,
I am also using the latest repository, yesterday I found
when i engage AUTO2 throttle stops completely. In Manual I
could fly well but moment I engage AUTO2 throttle gets cut and
aircraft starts falling down. Anybody please suggest how to
rectify this problem? I am also trying to find the reason for
the throttle cut, but nothing clicked yet.
Another problem I faced was during flight In Auto2 Iam unable
to change the gains from the Ground control station? When on
Ground I tried this exercise of changing gains in AUTO2 it
works well. Are there any altitude limitations? or I should
ensure Aircraft is level? or any other settings that needs to
be done?
Kindly help
--
Thanks and Regards
R.Guruganesh
On Fri, Jun 1, 2012 at 9:03 AM,
Eduardo lavratti
<address@hidden>
wrote:
Whell, one more time the ppz fizedwing set throttle to
0 (zero) when i engaged AUTO2 mode.
the flywing stalled and crashed.
i think fixedwing ppz have a bug in throttle code.
i am using airspeed_ets.
when i engaged auto2 the altitude is greater than
desired.
i will search and put a minimul throttle value in the
ppz code.
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