jaspreeth / ardupilot-mega

Automatically exported from code.google.com/p/ardupilot-mega
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FBW B anolmalies Build 2623 / Lib 1850 #323

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago
I moved from AP to APM and had my maiden this morning. All systems are working. 
Data downlink up at 115200.
Sensors: MTK ver 1.6, pitot, current, magneto. 

What steps will reproduce the problem?
1. Switch to FBW B after takeoff manual, steering the plane.

What is the expected output? 
1. Aileron stick to left or right -> Banking to the limit angle.
2. Elevator stick up/down -> pitch up/down to the limit angle.
3. Add power to the motor when pitching up. 

What do you see instead?
1. bank has no limit. 4500 was set. I stopped at 80°
I set 2000, no change in limit. I stopped at 80°

2. Limits set to standard. The plane pitches up and down with no limit.

3. When pitching up, the motor turns slower the steeper the upward angle.

What version of the product are you using? On what operating system?
APM 2.012
Build 2623 / Lib 1850
W7 home

Please provide any additional information below.
When accelerating in FBW it seems that some pitch is mixed in as well. The 
plane gains altitude instead of accelerating only. 

Original issue reported on code.google.com by christof...@aaa-immobilien.ch on 22 Apr 2011 at 10:49

GoogleCodeExporter commented 8 years ago
I made a second flight today with the following change:
ardupilotmega.pde line 274:
boolean airspeed_enabled = true;

On my flight 23.4.2011 I did not make sure if I have 3D lock. Although I should 
have had as I had today.

Now the FBW_B works very nice, bank max angles are kept.
Energy calculation for elevator stick movment seems to be the wrong way.
pulling the stick -> plane going up -> motor RPM reduced.

Original comment by christof...@aaa-immobilien.ch on 25 Apr 2011 at 5:12

GoogleCodeExporter commented 8 years ago
In my plane there is no airspeed sensor (pitot)
I noticed the same in FBW_B: elevator stick works in wrong way.

Original comment by alpo.has...@gmail.com on 25 Apr 2011 at 6:38

GoogleCodeExporter commented 8 years ago
Christof - sounds like you have the currently unsupported airspeed sensor.  
That is a know issue (with an issue already open), and will be fixed soon.

Original comment by dewei...@gmail.com on 25 Apr 2011 at 9:22