Politecnico di Torino
Politecnico di Torino
Politecnico di Torino
Academic Year 2014/15
Aerospace control systems
Master of science-level of the Bologna process in Computer Engineering - Torino
Master of science-level of the Bologna process in Mechatronic Engineering - Torino
Teacher Status SSD Les Ex Lab Tut Years teaching
Canuto Enrico       48 0 12 0 6
SSD CFU Activities Area context
ING-INF/04 6 D - A scelta dello studente A scelta dello studente
01PEG; 01NPS; 01LSE; 03OAI
Subject fundamentals
The course is taught in English.

The course will address fundamentals of the guidance, navigation and control systems (GNC) of aerospace vehicles. Models and design techniques though valid for aeronautic systems, will focus on space vehicles both orbiting and landing. Design framework will be the Embedded Model Control.
Expected learning outcomes
-to learn and assess through numerical simulator kinematics and dynamics of orbiting and landing space vehicles
- to learn space sensors and actuators, with a preliminary selection capability
- to learn guidance, navigation and control (GNC) architecture within the framework of the Embedded Model Control
- to learn, tune and assess GNC algorithms through a simulator
- to learn simple design computations and how to implement them through MATLAB, to learn the fundamentals of Simulink block diagrams and library
- to learn how to prepare a technical document about GNC; the document will be the basis for testing theoretical and design fundamentals and capabilities.
Prerequisites / Assumed knowledge
Requirements: time-continuous and time-discrete state equations, data-sampling conversion, transfer functions, harmonic analysis through Bode diagrams, fundamentals of time-discrete stochastic processes, concepts and methods of stability. controllability, observability, state observer, feedback control laws, good knowledge and practice of MATLAB and Simulink. Student lacking some arguments will be suggested specific chapters of a textbook. The teacher may integrate student preparation with extra lessons.
- Introduction to orbital dynamics, reference systems, perturbations, perturbation equations, landing dynamics (1 Credit)
- Introduction to attitude kinematics and dynamics, quaternions, perturbations (1 Credit)
- Sensors and actuator: accelerometers, gyros, attitude sensors, GPS, inertia wheels, propulsion (1 Credit)
- Architecture and functions of the control systems: navigation, guidance and control on the basis of Embedded Model Control (0,5 Credit)
- Introduction to trajectory navigation, guidance and control: orbit acquisition, drag-free and landing (1 Credit)
- Introduction to attitude navigation, guidance and control: propulsive control, inertial actuators (1,5 Credit)

Delivery modes
Classroom exercizes will be not separated from lessons: exercizes will be provided during lessons, partly they will be solved and partly left to students; solution methods will be explained. The lesson subjects will be implemented at lab within a standard simulation environment (Matlab, Simulink): the student will employ pre-built library blocks of a spacecraft simulator computing orbit and attitude time history. Student will be asked to implement part of the library blocks, both of the simulated dynamics and of the orbit and attitude control system. Student will have to tune parameters and test performance. Students will prepare a technical relation, organized according to the exercizes demanded by the teacher, the student must explain the solution and the relevant results. The relation should be ready together with the relevant simulated code for the examination.
Texts, readings, handouts and other learning resources
A draft textbook written by the teacher E. Canuto, Introduction to spacecraft orbit and attitude modelling and control, but still to be published, will be provided during the course. The text includes solved and unsolved exercizes. Handouts used to teach the textbook subjects will be also provided.
Simulation lab will be assisted with handouts of the exercizes to be solved (including library blocks), endowed with solution guides. Exercize solution and results are the object of the relation.
Assessment and grading criteria
Students will be examined orally starting from the prepared relation. Students must explain the exercise solution with the help of the explained theory. Student must repeat and modify simulated runs and must explain simulated results, relating them to theory. Optional exercizes if solved and explained will allow to increment the final examination score.

Programma definitivo per l'A.A.2014/15

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