Module: dvExecuteGuidance

Executive Summary

This method takes its own internal variables and creates an output attitude command to use for burn execution. It also flags whether the burn should be happening or not.

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.

Module I/O Messages

Msg Variable Name

Msg Type

Description

attRefOutMsg

AttRefMsgPayload

attitude reference output message

burnDataInMsg

DvBurnCmdMsgPayload

Input message that configures the vehicle burn

Functions

void SelfInit_dvExecuteGuidance(dvExecuteGuidanceConfig *configData, int64_t moduleID)

This method initializes the configData for the nominal delta-V maneuver guidance. It checks to ensure that the inputs are sane and then creates the output message

Parameters:

  • configData – The configuration data associated with the delta-V maneuver guidance

  • moduleID – The ID associated with the configData

Returns:

void

void Update_dvExecuteGuidance(dvExecuteGuidanceConfig *configData, uint64_t callTime, int64_t moduleID)

This method takes its own internal variables and creates an output attitude command to use for burn execution. It also flags whether the burn should be happening or not.

Parameters:

  • configData – The configuration data associated with the delta-V maneuver guidance

  • callTime – The clock time at which the function was called (nanoseconds)

  • moduleID – The ID associated with the configData

Returns:

void

void Reset_dvExecuteGuidance(dvExecuteGuidanceConfig *configData, uint64_t callTime, int64_t moduleID)

This resets the module.

Parameters:

  • configData – The configuration data associated with this module

  • callTime – The clock time at which the function was called (nanoseconds)

  • moduleID – The unique module identifier

Returns:

void

struct dvExecuteGuidanceConfig
#include <dvExecuteGuidance.h>

Top level structure for the nominal delta-V guidance.

Public Members

DvExecutionDataMsg_C burnExecOutMsg

[-] The name of burn execution output message

NavTransMsg_C navDataInMsg

[-] The name of the incoming attitude command

DvBurnCmdMsg_C burnDataInMsg

[-] Input message that configures the vehicle burn

THRArrayOnTimeCmdMsg_C thrCmdOutMsg

[-] Output thruster message name

double dvInit[3]

(m/s) DV reading off the accelerometers at burn start

uint32_t burnExecuting

(-) Flag indicating whether the burn is in progress or not

uint32_t burnComplete

(-) Flag indicating that burn has completed successfully

BSKLogger *bskLogger

BSK Logging.