Control Subsystems Flashcards
What are the two main types of control systems?
open loop and closed loop
Which control subsystem is responsible for satellite attitude control?
ADCS
What are the three main components of the ADCS?
Controllers, Instrument, and Sensors
Name three “eyes” type sensors in ADCS?
Earth, sun, star sensors
What type of sensor is a magnetometer and gyroscope?
Inner Ear
What is the primary function of attitude determination?
to control satallite orbit
Gravity-gradient stabilization, spin stabilization and dampers is what type of attitude control instrument?
Passive instrument
Thrusters, magnetic torquers, momentum-control devices are what type of attitude control system?
Active instrument
In GNC subsystems, what does orbit determination measure?
Position and velocity with respect to Earth
Which navigation system uses accelerometers and gyroscopes to determine current position velocity?
Inertial sensors
What are the three main componenets of the GNC subsystems?
Guidance, Navigation and Control
When must attitude determination be performed?
On-board
What is the primary function of the “controller” in ADCS?
To take inputs from sensors and generate commands
Which system uses triangulation for navigation purposes?
Earth, sun and star sensors
What type of control system provides feedback on the effectiveness of its actions?
Closed-loop controls
Which component serves as the “hands” of the ADCS?
Instruments
RTS Ranging is processed where on the navigation system
Off board (externally)
What is the primary function of the GNC subsystem?
To control and monitor satellite orbit
