simpleMassProps#
Executive Summary#
This module simulates a spacecraft mass sensor. It receives the mass properties from a spacecraft object using a simulation type message, and converts it into a FSW type message to be used in flight software modules.
Message Connection Descriptions#
The following table lists all the module input and output messages. The module msg connection is set by the user from python.
Msg Variable Name |
Msg Type |
Description |
|---|---|---|
scMassPropsInMsg |
SCMassPropsMsgPayload |
Spacecraft mass properties input message. It contains the mass, inertia and center of mass of the spacecraft in a |
vehicleConfigOutMsg |
VehicleConfigMsgPayload |
Vehicle configuration output message. It contains the mass, inertia and center of mass of the spacecraft in a |
Detailed Module Description#
The module copies the contents from a SCMassPropsMsgPayload to a VehicleConfigMsgPayload message.
Model Assumptions and Limitations#
This code makes the following assumptions:
Sensor is perfect: The sensor measures the exact spacecraft mass properties without noise or any other interference.
User Guide#
This section contains conceptual overviews of the code and clear examples for the prospective user.
Module Setup#
The module is created in python using:
1scMassPropsModule = simpleMassProps.SimpleMassProps()
2scMassPropsModule.modelTag = "scMassPropsModule"
Class SimpleMassProps#
-
class SimpleMassProps : public SysModel#
FSW mass properties converter module class.
Public Functions
-
SimpleMassProps()#
This is the constructor for the module class.
-
~SimpleMassProps()#
Module Destructor.
-
void reset(uint64_t currentSimNanos)#
This method is used to reset the module.
- Returns:
void
-
void readInputMessages()#
This method reads the spacecraft mass properties state input message
-
void writeOutputMessages(uint64_t CurrentClock)#
This method writes the vehicle configuration output message.
- Parameters:
CurrentClock – The clock time associated with the model call
- Returns:
void
-
void computeMassProperties()#
This method transfers the spacecraft mass propertiies information to a FSW format
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void updateState(uint64_t currentSimNanos)#
This is the main method that gets called every time the module is updated. It reads the simulation message, transfers its contents and writes to an output FSW message.
- Returns:
void
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SimpleMassProps()#