Demanded pitch sensor
The Pitch sensor can be added by clicking on the sensor icon of the Pitch part, as shown in the picture below:
The Demanded pitch sensor is not available for Fixed pitch.
The Pitch sensor provides the following fields:
Field | Unit | Description |
Demanded collective pitch angle | degrees | the pitch angle requested by the controller |
Cumulative collective demanded pitch angle | degrees | this output sums up the variation of all the pitch angle values reached during a simulation, in absolute value. For example if the pitch angle goes from 0 to 1, this output will be 1. If the pitch then goes to 2, this output will be to. If the pitch then goes back to 1, this output will be 3. |
Demanded collective pitch angle rate | degrees/s | the speed at which the demanded collective pitch angle is changed (i.e. the time derivative of the Demanded collective pitch angle output) |
Set point | rpm | when the pitch controller is active, the PID controller will adjust the pitch so that the generator rotational speed is close to the set point (only available for PID scheme) |
RPM error | rpm | the difference bewteen the current generator rotational speed and the Set point (only available for PID scheme) |
P term | degrees | the pitch correction due to the proportional term of the PID controller (only available for PID scheme) |
I term | degrees | the pitch correction due to the integral term of the PID controller (only available for PID scheme) |
D term | degrees | the pitch correction due to the derivative term of the PID controller (only available for PID scheme) |
Gain scheduling factor | - | correction factor applied to correct the PID terms for the current pitch angle. See Jonkman et al. (2009k) for detailed info. (only available for PID scheme) |
DLL response time | ms | time elsapsed between Ashes calling for a value and the DLL returning the value (only available for Bladed DLL type) |