Module: thrMomentumManagement¶
Executive Summary¶
This module reads in the Reaction Wheel (RW) speeds, determines the net RW momentum, and then determines the amount of angular momentum that must be dumped.
A separate thruster firing logic module called thrMomentumDumping will later on compute the thruster on cycling. The module
PDF Description
contains further information on this module’s function, how to run it, as well as testing.
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. The msg type contains a link to the message structure definition, while the description provides information on what this message is used for.
Msg Variable Name |
Msg Type |
Description |
---|---|---|
deltaHOutMsg |
output message with the requested inertial angular momentum change |
|
rwSpeedsInMsg |
reaction wheel speed input message |
|
rwConfigDataInMsg |
name of the RWA configuration message |
Functions
-
void SelfInit_thrMomentumManagement(thrMomentumManagementConfig *configData, int64_t moduleID)¶
This method initializes the configData for this module. It creates a single output message of type CmdTorqueBodyMsgPayload.
- Parameters
configData – The configuration data associated with this module
moduleID – The module identifier
- Returns
void
-
void Update_thrMomentumManagement(thrMomentumManagementConfig *configData, uint64_t callTime, int64_t moduleID)¶
The RW momentum level is assessed to determine if a momentum dumping maneuver is required. This checking only happens once after the reset function is called. To run this again afterwards, the reset function must be called again.
- Parameters
configData – The configuration data associated with the module
callTime – The clock time at which the function was called (nanoseconds)
moduleID – The module identifier
- Returns
void
-
void Reset_thrMomentumManagement(thrMomentumManagementConfig *configData, uint64_t callTime, int64_t moduleID)¶
This method performs a complete reset of the module. Local module variables that retain time varying states between function calls are reset to their default values.
- Parameters
configData – The configuration data associated with the module
callTime – The clock time at which the function was called (nanoseconds)
moduleID – The module identifier
- Returns
void
-
struct thrMomentumManagementConfig¶
- #include <thrMomentumManagement.h>
Module configuration message definition.
Public Members
-
int initRequest¶
[-] status flag of the momentum dumping management
-
RWArrayConfigMsgPayload rwConfigParams¶
[-] struct to store message containing RW config parameters in body B frame
-
double hs_min¶
[Nms] minimum RW cluster momentum for dumping
-
CmdTorqueBodyMsg_C deltaHOutMsg¶
The name of the output message.
-
RWSpeedMsg_C rwSpeedsInMsg¶
[] The name for the reaction wheel speeds message
-
RWArrayConfigMsg_C rwConfigDataInMsg¶
[-] The name of the RWA configuration message
-
BSKLogger *bskLogger¶
BSK Logging.
-
int initRequest¶