| Course title | |||||
| 宇宙制御工学 [Control Engineering in Aerospace] | |||||
| Course category | technology speciality courses | Requirement | Credit | 2 | |
| Department | Year | 3～4 | Semester | 2nd | |
| Course type | 2nd | Course code | 023556 | ||
| Instructor(s) | |||||
| 小島 広久 [KOJIMA Hirohisa] | |||||
| Facility affiliation | Graduate School of Engineering | Office | afjgxte/L1151 | Email address | |
| Course description |
| Spacecraft, especially artificial satellites, will be explained. Attitude expression and rotational motion, classification of stabilization method, control method based on classical control and modern control theories will be lectured. The stability condition, spin speed control and spin axis control of passive spin-stabilized satellites will be explained, focusing on the relationship with attitude representation. Classification of triaxial satellites, their rotational motion characteristics, and attitude control are lectured for each classification. |
| Expected Learning |
|
It is required to understand the attitude representation, control methods, attitude control devices, disturbance torque acting on the artificial satellite, and the operation principle of attitude sensors. It is required to learn and understand equations of rotational motion of the artificial satellite and the control methodology for designing the artificial satellite attitude control. Pass criterion for this lecture is to exceed 60 points with respect to the total points of the report evaluation score and the final exam score. Corresponding criteria in the Diploma Policy: See the Curriculum maps. |
| Course schedule |
|
1. Purpose and method of guidance control 2. Types and characteristics of attitude stabilization method of artificial satellite 3. Rotational geometry (attitude representation by Euler angles and angular velocity) 4. Representation of spin-stabilized satellite motion by rigid body equations of rotational motion 5. Stability condition of single spin-stabilized satellite 6. Rotational speed control of single spin-stabilized satellites (jet dumping, yo-yo de-spinner) 7. Spin axis control of single spin-stabilized satellite (spin-up maneuver, active nutation control) 8. Stability condition of dual-spin stabilized satellites 9. Attitude motion and control of triaxial satellite Part 1: Zero momentum satellite (wheel distribution rule) 10. Attitude motion and control of triaxial satellite Part 2: Bias momentum satellite: Similarity to dual spin stabilized satellite 11. Attitude motion and control of triaxial satellite Part 3: Controlled momentum method: Control moment gyroscope 12. Attitude control by thrusters (Limit cycle, Schmitt trigger) 13. Types of environmental disturbance and orbital altitude dependency, gravity gradient torque and gravity gradient stabilized satellite 14. Control by magnetic torquer, operation principle of various sensors 15. Summary Final examination |
| Prerequisites |
| Students are required to have knowledge of classical control theory. |
| Required Text(s) and Materials |
| The handouts will be provided. |
| References |
|
1) Vladimir A. Chobotov: Spacecraft Attitude Dynamics and Control（Krieger Publishing Company） 2) Bong Wie: Space Vehicle Dynamics and Control，AIAA Education Series |
| Assessment/Grading |
|
Report evaluation weight: 30%, final exam weight: 70% The report task is imposed on one-third of the content of the lecture (contents of the spin stabilized satellite). The final examination is conducted for the remaining two thirds of lecture contents. |
| Message from instructor(s) |
|
The most of contents will be lectured in form of the traditional lecture style, but I will show demos with CG animation, MATLAB (Simulink) as appropriate so that students can visually understand the motion that the equations of motion mean. Students are highly advised to study the lectured topics in detail at the library and through the Internet by themselves. |
| Course keywords |
| attitude representation, spin-stabilized satellite, triaxis attitude control satellite, attitude control actuators, attitude sensors |
| Office hours |
| Questions will be received at the classroom after each day for lectures or via email. |
| Remarks 1 |
| Remarks 2 |
| Related URL |
| Lecture Language |
| Japanese |
| Language Subject |
| Last update |
| 5/19/2021 4:54:35 PM |