EFCS IO

1
EFCS I/O
2
ISA1 Input Data
DMS
EFCS Control Subsystem
ISA2 Input Data
ISA3 Input Data
ST1 Input Data
ST2 Input Data
Command Data
Telemetry Data
PPM Commands
ST Commands
3
Inertial Sensor Assembly (ISA) Inputs

• Calculated automatically in simulation
• Defined in gnc_1553_system_objects.ads
• 3 Sensors 2 records per sensor
• Note that the output of the ISA is an input to
  EFCS
• ISA1_OUTPUT_DATA_M01 ISA_OUTPUT_DATA_M01_TY
  PE
• ISA1_OUTPUT_DATA_M02 ISA_OUTPUT_DATA_M02_TY
  PE
• ISA2_OUTPUT_DATA_M01 ISA_.OUTPUT_DATA_M01_T
  YPE
• ISA2_OUTPUT_DATA_M02 ISA_OUTPUT_DATA_M02_TY
  PE
• ISA3_OUTPUT_DATA_M01 ISA_OUTPUT_DATA_M01_TY
  PE
• ISA3_OUTPUT_DATA_M02 ISA_OUTPUT_DATA_M02_TY
  PE

4
Star Tracker Inputs

• Calculated automatically in simulation
• Defined in gnc_1553_system_objects.ads
• 2 Sensors
• Note that the output of the Star Tracker is an
  input to EFCS
• ST1_OUTPUT_DATA ST_OUTPUT_DATA_T
• ST2_OUTPUT_DATA ST_OUTPUT_DATA_T

5
Command Data

• Defined in gnc_ul_system_objects.ads
• Mode commands
• Attitude commands
• Provided to Control subsystem using Scripting
  language (Timeliner) in version given to you
• Can be changed using Timeliner script, or using
  software
• Look at mit-16-035_script.tls for script being
  used
• env_uplink.ads defines numeric codes for command
  data (see defines at the beginning of the
  script)
• Run tl_main.exe to compile a script
• It will prompt for input script (.tls)
• No options are needed
• It will produce .tlx as output (same name as
  input)
• Rename to cc_script.tlx for EFCS software to use
  it

6
Telemetry Data

• Should contain all data needed by Test Team
• Currently defined as follows
• gnc_hfe_system_objects.ads
• ATTITUDE_IB ATTITUDE_IB_T
• ATTITUDE_RATE ATTITUDE_RATE_T
• gnc_mfe_system_objects.ads
• SSF_USER_STATE SSF_USER_STATE_T
• ACF_COMMAND ACF_COMMAND_T
• gnc_cs_system_objects.ads
• GNC_CS_OUTPUT GNC_CS_OUTPUT_T

7
PPM Commands

• Used automatically by simulation
• Output from student-generated code
• Defined in
• gnc_1553_system_objects.ads
• PPM1_COMMAND_DATA PPM_COMMAND_DATA_T
• PPM2_COMMAND_DATA PPM_COMMAND_DATA_T

8
Star Tracker Commands

• Used automatically by simulation
• Defined in gnc_1553_system_objects.ads
• 2 Sensors 2 records per sensor
• Note that the output of the Star Tracker is an
  input to EFCS
• ST1_COMMAND_DATA ST_COMMAND_DATA_T
• ST2_COMMAND_DATA ST_COMMAND_DATA_T