Keep writting and uploading.
Related files:
0)Working principle of the UAV autopilot-take YS09 as an example:
https://www.rcgroups.com/forums/show...=4536223&stc=1
1)YS09 UAV Autopilot Specs.pdf :
https://www.rcgroups.com/forums/show...=4528121&stc=1
2)Hardware&GCS_Draft1.pdf:
https://www.rcgroups.com/forums/show...=4528122&stc=1
3)Brief English Manual(draft1):
https://www.rcgroups.com/forums/show...=4528123&stc=1
4)Ground test and failure solving-draft1:
https://www.rcgroups.com/forums/show...=4547007&stc=1
5)GCS using Google Earth plugin:
https://www.rcgroups.com/forums/show...6&d=1324894564
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Part1:Working Principle(1)- Servo Control
Diagram1:PWM Signal and Servo COntrol
Notes:
1)PWM signal is at low signal level usually,but it will change to high signal level every 2ms time,and lasts for 1~2 ms,that is ,the pause width is 1~2 ms.
2)The arm of the servo will turn to a certain angle according to the pause width of the PWM signal recieved by the servo.
3)1ms<->+45º(Max angle turning CCW),2ms<->-45º(Max angle turning CW).
4)The control surface will turn to a certain angle dragged by the servo arm through the rod.
5)+45º<->+20º(Max angle of the control surface turning CCW),-45º<->-20º(Max angle
Of the control surface turing CW).
6)1.5ms<->0º of servo arm turning angle<->neutral point of the control surface.
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