Difference between revisions of "Module/AOA adc"
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AOA_adc is a simple module that | <categorytree style="float:right; clear:right; margin-left:1ex; border: 1px solid gray; padding: 0.7ex;" mode=pages>Modules</categorytree> | ||
== Introduction == | |||
AOA_adc is a simple module that has been written to test the flight behaviour with a Angle Of Attack sensor. | |||
It reads the value of an defined ADC port and converts it to an angle. | |||
=== Implementation option A === | |||
A mode variable named h_ctl_pitch_mode in the stabilization_attitude.c enables to switch between estimator_theta (IMU) and estimator_AOA to control the elevator. | A mode variable named h_ctl_pitch_mode in the stabilization_attitude.c enables to switch between estimator_theta (IMU) and estimator_AOA to control the elevator. | ||
=== Measurements === | |||
{TODO: description} | |||
== | == Hardware == | ||
{TODO: image} | |||
Angle of Attack ADC Sensor | Angle of Attack ADC Sensor | ||
*'''US DIGITAL MA3-A10-236-N''' | *'''US DIGITAL MA3-A10-236-N''' | ||
If you are using the analog version of this sensor, be sure to connect it to a 5V tolerant ADC on you autopilot. For instance ADC2 on Lisa/M is not 5V tolerant, so a voltage divider is needed to scale the signal down to 3.3V. | |||
ModuleXML | ModuleXML | ||
*AOA_adc.xml | *AOA_adc.xml | ||
| Line 19: | Line 30: | ||
== Airframe Adjustments == | == Airframe Adjustments == | ||
* (1) '''Insert''' the software module in the airframe: | * (1) '''Insert''' the software module in the airframe: | ||
<source lang="xml"> | |||
<modules> | |||
<load name="AOA_adc.xml"> | |||
<configure name="ADC_AOA" value="ADC_6"/> | |||
<define name="AOA_OFFSET" value="-0.135000005364"/> | |||
<define name="AOA_FILTER" value="0.875999987125"/> | |||
<define name="USE_AOA"/> | |||
</load> | |||
</modules> | |||
</source> | |||
* Legend: | * Legend: | ||
**The ACS_AOA defines on whitch port the US Digital Sensor is connected to. | **The ACS_AOA defines on whitch port the US Digital Sensor is connected to. | ||
| Line 37: | Line 51: | ||
* (3) Now you can turn on the pitch stabilization by setting the '''PITCH_Mode''' to 1 | * (3) Now you can turn on the pitch stabilization by setting the '''PITCH_Mode''' to 1 | ||
** PITCH_Mode = 0 --> estimator_thata from IMU (default) | ** PITCH_Mode = 0 --> estimator_thata from IMU (default) | ||
[[Category:Modules]] | |||
Latest revision as of 02:28, 28 November 2017
Introduction
AOA_adc is a simple module that has been written to test the flight behaviour with a Angle Of Attack sensor.
It reads the value of an defined ADC port and converts it to an angle.
Implementation option A
A mode variable named h_ctl_pitch_mode in the stabilization_attitude.c enables to switch between estimator_theta (IMU) and estimator_AOA to control the elevator.
Measurements
{TODO: description}
Hardware
{TODO: image}
Angle of Attack ADC Sensor
- US DIGITAL MA3-A10-236-N
If you are using the analog version of this sensor, be sure to connect it to a 5V tolerant ADC on you autopilot. For instance ADC2 on Lisa/M is not 5V tolerant, so a voltage divider is needed to scale the signal down to 3.3V. ModuleXML
- AOA_adc.xml
Code- and headerfile
- sw/airborne/modules/sensors
Settings file
- AOA_adc.xml
Airframe Adjustments
- (1) Insert the software module in the airframe:
<modules>
<load name="AOA_adc.xml">
<configure name="ADC_AOA" value="ADC_6"/>
<define name="AOA_OFFSET" value="-0.135000005364"/>
<define name="AOA_FILTER" value="0.875999987125"/>
<define name="USE_AOA"/>
</load>
</modules>
- Legend:
- The ACS_AOA defines on whitch port the US Digital Sensor is connected to.
- The AOA_OFFSET is needed to adjust the Zero rad mark in the normal flightposition. It can be changed with the AOA_adc.xml settings loaded.
- The AOA_FILTER describes the PT1 filter value of the angle. 0 = no filter
- Define USE_AOA to make the module work.
- (2) Load the settings XML in the GCS: AOA_adc.xml
- (3) Now you can turn on the pitch stabilization by setting the PITCH_Mode to 1
- PITCH_Mode = 0 --> estimator_thata from IMU (default)