2550 oversteering

15 years 1 month ago #4381432 by DScott
2550 oversteering was created by DScott
Hi,
I've set up my 2550 in Mixed A&B, open loop mode for differential motor steering of an autonomous boat. The boat steers well in manual RC mode. When switched to autopilot mode, it sometimes cant decide what to do, other times it steers well. It is using a GPS for autonomous navigation - the autopilot does have a gyro. When turning to a new heading in the automode it sometimes finds itself running in circles - forward and backward, and when on course does, at times tend to S - turn. I'm not quite sure if I want to adjust acceleration,the control curves or the left/right parameters. Any suggestions before I begin changing parameters would be appreciated. Thanks.

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15 years 1 month ago #4381684 by cosma
Replied by cosma on topic Re:2550 oversteering
<P style="MARGIN: 0px">I have no suggestion. I can only affirm that the controller works identically in RS232 and RC mode (i.e. same acceleration, command curves, left/right adjust, ...). The only thing that is different is the command deadband that does not exist in RS232 mode.
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<P style="MARGIN: 0px">What changes, obviously, is the way that the command is given to the controller: in RC mode, the joystick min and max positions will create a command value of -127 to +127.
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<P style="MARGIN: 0px">In RS mode, you send the command values explicitly.
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15 years 1 month ago #4383528 by DScott
Replied by DScott on topic Re:2550 oversteering
Cosma,
The autopilot is uses PCM when in automomous mode. RS232 is never used.

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