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Hanspeter Schaub
This course trains you in the skills needed to program specific orientation and achieve precise aiming goals for spacecraft moving through three dimensional space. First, we cover stability definitions of nonlinear dynamical systems, covering the difference between local and global stability. We then analyze and apply Lyapunov's Direct Method to prove these stability properties, and develop a nonlinear 3-axis attitude pointing control law using Lyapunov theory. Finally, we look at alternate feedback control laws and closed loop dynamics.
Read more
This course trains you in the skills needed to program specific orientation and achieve precise aiming goals for spacecraft moving through three dimensional space. First, we cover stability definitions of nonlinear dynamical systems, covering the difference between local and global stability. We then analyze and apply Lyapunov's Direct Method to prove these stability properties, and develop a nonlinear 3-axis attitude pointing control law using Lyapunov theory. Finally, we look at alternate feedback control laws and closed loop dynamics.
Read more
This course trains you in the skills needed to program specific orientation and achieve precise aiming goals for spacecraft moving through three dimensional space. First, we cover stability definitions of nonlinear dynamical systems, covering the difference between local and global stability. We then analyze and apply Lyapunov's Direct Method to prove these stability properties, and develop a nonlinear 3-axis attitude pointing control law using Lyapunov theory. Finally, we look at alternate feedback control laws and closed loop dynamics.
After this course, you will be able to...
* Differentiate between a range of nonlinear stability concepts
* Apply Lyapunov’s direct method to argue stability and convergence on a range of dynamical systems
* Develop rate and attitude error measures for a 3-axis attitude control using Lyapunov theory
* Analyze rigid body control convergence with unmodeled torque
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OpenCourser.com/course/52cwwf/control
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What's inside
Syllabus
Nonlinear Stability Definitions
Discusses stability definitions of nonlinear dynamical systems, and compares to the classical linear stability definitions. The difference between local and global stability is covered.
Read more
Syllabus
Nonlinear Stability Definitions
Discusses stability definitions of nonlinear dynamical systems, and compares to the classical linear stability definitions. The difference between local and global stability is covered.
Read more
Overview of Lyapunov Stability Theory
Lyapunov's direct method is employed to prove these stability properties for a nonlinear system and prove stability and convergence. The possible function definiteness is introduced which forms the building block of Lyapunov's direct method. Convenient prototype Lyapunov candidate functions are presented for rate- and state-error measures.
Attitude Control of States and Rates
A nonlinear 3-axis attitude pointing control law is developed and its stability is analyized using Lyapunov theory. Convergence is discussed considering both modeled and unmodeled torques. The control gain selection is presented using the convenient linearized closed loop dynamics.
Alternate Attitude Control Formulations
Alternate feedback control laws are formulated where actuator saturation is considered. Further, a control law is presented that perfectly linearizes the closed loop dynamics in terms of quaternions and MRPs. Finally, the 3-axis Lyapunov attitude control is developed for a spacecraft with a cluster of N reaction wheel control devices.
Good to know
Good to know
Know what's good ,
what to watch for , and
possible dealbreakers
Develops analytical, theoretical, and practical knowledge and methods in the field of 3-axis attitude control for spacecraft
Provides rigorous mathematical foundations and practical tools for spacecraft attitude control system design and analysis
Enables learners to analyze spacecraft attitude stability and design effective control laws to ensure precise spacecraft orientation
Examines advanced control techniques for spacecraft attitude control, including Lyapunov's Direct Method and nonlinear feedback control laws
Led by Hanspeter Schaub, an experienced researcher and instructor in spacecraft attitude control
Prerequisites may include a background in spacecraft dynamics and control, as well as familiarity with MATLAB or similar software
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Reviews summary
Advanced spacecraft control
According to students, Control of Nonlinear Spacecraft Attitude Motion is an interesting course that provides insight into non-linear control of spacecrafts. Learners say the course is well-structured and features engaging lectures and assignments. Though some students have experienced difficulty with quizzes and lack of instructor support, other students highly recommend the course for those interested in non-linear control or aerospace engineering.
Content is interesting.
"Very interesting and challenging!"
"I found this course really interesting"
"Learned so much and still want to proceed :)"
Instructor is superb.
"Professor Mr. Schaub is absolutely, completely superb!!!!!"
Course is difficult.
"Bad maintenance of the questionnaires"
"Some quizes have wrong data given"
Limited support from instructors.
"NO support from the instructors,mentors and TAs."
"The instructor kept himself in loop with people doing the course"
Activities
Be better prepared
before
your course. Deepen your understanding
during
and
after
it. Supplement your coursework and achieve mastery of the topics covered
in Control of Nonlinear Spacecraft Attitude Motion with these
activities:
Review Stability Definitions
Show steps
Reviewing the differences between local and global stability definitions will cement this concept for your upcoming study in this course.
Show steps
-
Read the course syllabus on Nonlinear Stability Definitions.
Join a Spacecraft Control Study Group
Show steps
Engaging in group discussions and problem-solving sessions can significantly improve your understanding of spacecraft control principles.
Browse courses on
Spacecraft Control
Show steps
-
Find a study group focused on spacecraft control.
-
Participate in weekly discussions and problem-solving sessions.
-
Contribute your knowledge and insights to the group.
Practice Lyapunov's Direct Method
Show steps
Applying Lyapunov's direct method to analyze stability and convergence will greatly help you in the upcoming units on spacecraft stability.
Browse courses on
Lyapunov's Direct Method
Show steps
-
Find a set of practice problems on Lyapunov's Direct Method.
-
Solve the practice problems.
-
Review your solutions with the answer key.
Show all three activities
Review Stability Definitions
Show steps
Reviewing the differences between local and global stability definitions will cement this concept for your upcoming study in this course.
Show steps
Show steps
Show steps
- Read the course syllabus on Nonlinear Stability Definitions.
Join a Spacecraft Control Study Group
Show steps
Engaging in group discussions and problem-solving sessions can significantly improve your understanding of spacecraft control principles.
Browse courses on
Spacecraft Control
Show steps
Show steps
Show steps
- Find a study group focused on spacecraft control.
- Participate in weekly discussions and problem-solving sessions.
- Contribute your knowledge and insights to the group.
Practice Lyapunov's Direct Method
Show steps
Applying Lyapunov's direct method to analyze stability and convergence will greatly help you in the upcoming units on spacecraft stability.
Browse courses on
Lyapunov's Direct Method
Show steps
Show steps
Show steps
- Find a set of practice problems on Lyapunov's Direct Method.
- Solve the practice problems.
- Review your solutions with the answer key.
Show all three activities
Career center
Learners who complete Control of Nonlinear Spacecraft Attitude Motion will develop knowledge and skills
that may be useful to these careers:
Guidance, Navigation, and Control Engineer
Guidance, Navigation, and Control Engineer
Guidance, Navigation, and Control (GNC) Engineers design and develop systems to guide, navigate, and control aircraft, spacecraft, and missiles. They use a variety of sensors and actuators to collect data and control the motion of these vehicles. A deep understanding of spacecraft attitude control is essential for GNC Engineers. This course provides a strong foundation in these areas, and helps students develop the skills they need to succeed in this field.
Flight Dynamics Engineer
Flight Dynamics Engineer
Flight Dynamics Engineers analyze the motion of aircraft and spacecraft. They develop and use mathematical models to predict the trajectory of these vehicles, and to design control systems to keep them on course. An understanding of spacecraft attitude control and motion is essential for Flight Dynamics Engineers. This course provides a strong foundation in these areas.
Spacecraft Systems Engineer
Spacecraft Systems Engineer
Spacecraft Systems Engineers design, develop, and test spacecraft. They work on all aspects of the spacecraft, from the propulsion system to the electrical system. An understanding of spacecraft attitude control is essential for Spacecraft Systems Engineers. This course provides a strong foundation in these areas, and helps students develop the skills they need to succeed in this field.
Control Systems Engineer
Control Systems Engineer
Control Systems Engineers analyze and design systems to control the behavior of dynamic systems. They may work on systems as simple as a thermostat, or as complex as a spacecraft. Knowledge of spacecraft attitude control is important for Control Systems Engineers who work on spacecraft guidance, navigation, and control systems. This course helps build the foundation of knowledge required to succeed in this field.
Mission Design Engineer
Mission Design Engineer
Mission Design Engineers plan and design the trajectories of spacecraft. They analyze the gravitational forces and other factors that affect the motion of spacecraft, and they develop strategies to optimize the spacecraft's trajectory. An understanding of spacecraft attitude control is important for Mission Design Engineers, as it affects the spacecraft's ability to point its instruments and antennas. This course provides a strong foundation in these areas.
Propulsion Engineer
Propulsion Engineer
Propulsion Engineers design and develop propulsion systems for aircraft, spacecraft, and missiles. They analyze the performance of these systems, and they develop strategies to optimize their efficiency. An understanding of spacecraft attitude control is important for Propulsion Engineers, as it affects the spacecraft's ability to maneuver. This course provides a strong foundation in these areas.
Satellite Communications Engineer
Satellite Communications Engineer
Satellite Communications Engineers design and develop satellite communications systems. They analyze the performance of these systems, and they develop strategies to optimize their reliability. An understanding of spacecraft attitude control is important for Satellite Communications Engineers, as it affects the spacecraft's ability to point its antennas. This course provides a strong foundation in these areas.
Telecommunications Engineer
Telecommunications Engineer
Telecommunications Engineers design and develop telecommunications systems. They analyze the performance of these systems, and they develop strategies to optimize their reliability and efficiency. An understanding of spacecraft attitude control is important for Telecommunications Engineers who work on satellite communications systems. This course provides a strong foundation in these areas.
Robotics Engineer
Robotics Engineer
Robotics Engineers design, build, and program robots. They work on a variety of robots, from small, mobile robots to large, industrial robots. An understanding of spacecraft attitude control is important for Robotics Engineers who work on robots that are used in space. This course provides a strong foundation in these areas.
Systems Engineer
Systems Engineer
Systems Engineers design, develop, and test complex systems. They work on a variety of systems, from small, handheld devices to large, industrial machines. An understanding of spacecraft attitude control is important for Systems Engineers who work on spacecraft guidance, navigation, and control systems. This course provides a strong foundation in these areas.
Mechanical Engineer
Mechanical Engineer
Mechanical Engineers design, develop, and test mechanical systems. They work on a variety of systems, from small, handheld devices to large, industrial machines. An understanding of spacecraft attitude control is important for Mechanical Engineers who work on spacecraft guidance, navigation, and control systems. This course provides a strong foundation in these areas.
University Professor
University Professor
University Professors teach and conduct research at universities. They typically specialize in a particular field, such as engineering, science, or the humanities. An understanding of spacecraft attitude control is important for University Professors who teach and conduct research in the field of aerospace engineering. This course provides a strong foundation in these areas, and helps students develop the skills they need to succeed in this field.
Data Scientist
Data Scientist
Data Scientists collect, analyze, and interpret data. They use this data to make recommendations and solve problems. An understanding of spacecraft attitude control is important for Data Scientists who work in the aerospace industry. This course provides a strong foundation in these areas, and helps students develop the skills they need to succeed in this field.
Analyst
Analyst
Analysts collect, analyze, and interpret data. They use this data to make recommendations and solve problems. An understanding of spacecraft attitude control is important for Analysts who work in the aerospace industry. This course provides a strong foundation in these areas, and helps students develop the skills they need to succeed in this field.
Aerospace Engineer
Aerospace Engineer
An Aerospace Engineer designs aircraft, spacecraft, satellites, and missiles. They analyze the structural integrity of these vehicles, and test them to ensure they are safe to operate. An understanding of spacecraft attitude control and motion is necessary to devise solutions for aircraft stability, and to design guidance, navigation, and control systems. As such, this course may be useful for someone interested in a career as an Aerospace Engineer.
For more career information including salaries, visit:
OpenCourser.com/course/52cwwf/control
Reading list
We've selected ten books
that we think will supplement your
learning. Use these to
develop background knowledge, enrich your coursework, and gain a
deeper understanding of the topics covered in
Control of Nonlinear Spacecraft Attitude Motion.
This reference provides a good background on the applicable mathematics and physics for the concepts covered in this course. It very detailed book which could serve as a textbook for the course.
Save
Aids in understanding the many advanced mathematical concepts used for spacecraft control design. It would provide good background reading.
Serves as a very good reference for Lyapunov exponents and related theorems mentioned in the online course.
This reference book covers attitude dynamics and control of space vehicles in great detail. It offers more in depth coverage of the course topics but is less useful as a direct reference for the course.
Provides good background and basic control theory for spacecraft attitude control, but may be redundant with the primary course material.
Save
Gives a very complete background to feedback control systems but focuses less on nonlinear systems and spacecraft attitude control.
Provides a solid foundation in control systems, but less useful as a direct reference for the nonlinear spacecraft control concepts that this course focuses on.
Provides good background on nonlinear dynamics relevant to space vehicles, but less applicable to spacecraft attitude control design or Lyapunov-based control.
This very specialized book that does not address the topics of spacecraft attitude control or Lyapunov stability directly, but could be used to gain a deeper understanding of some specialized mathematical concepts used in spacecraft control design, if the student has a strong foundation in linear and nonlinear control systems.
Covers control of electrical drives, which is only peripherally related to spacecraft attitude control. It is not a useful reference for this course.
For more information about how these books relate to this course, visit:
OpenCourser.com/course/52cwwf/control
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Effort
Best completed in 4 weeks, with a commitment of between 2 and 5 hours of work per week.
Level
Advanced
Via
Coursera
Institution
University of Colorado Boulder
Instructor
Hanspeter Schaub
Language
English
Transcripts
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This course belongs to a
collection
called
Spacecraft Dynamics and Control. It's comprised of four courses:
- Spacecraft Dynamics Capstone: Mars Mission
- Kinematics: Describing the Motions of Spacecraft
- Control of Nonlinear Spacecraft Attitude Motion (viewing)
- Kinetics: Studying Spacecraft Motion
Good to know
Develops analytical, theoretical, and practical knowledge and methods in the field of 3-axis attitude control for spacecraft
Provides rigorous mathematical foundations and practical tools for spacecraft attitude control system design and analysis
Enables learners to analyze spacecraft attitude stability and design effective control laws to ensure precise spacecraft orientation
Examines advanced control techniques for spacecraft attitude control, including Lyapunov's Direct Method and nonlinear feedback control laws
Led by Hanspeter Schaub, an experienced researcher and instructor in spacecraft attitude control
Prerequisites may include a background in spacecraft dynamics and control, as well as familiarity with MATLAB or similar software
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