1. Work done in collaboration with: Adam Waite
Michael Walker February 14, 2008 Dynamics and Control Group Contact TVC Autopilot and Guidance System
Work done in collaboration with: Adam Waite
AAE 450 Spring 2008
Dynamics and Control

2. TVC Guidance and Autopilot Control
Lessons from last week: Designing a new stable control method is far from trivial.
Solution: Find and implement a proven control theory
Method Chosen: Control theory based on paper by Yeh, Chang and Fu,1 Stability of system based on Lyapunov stability.1
Basics of Controller:
2 Systems: Autopilot (Attitude Control) and Guidance (Position Control)
Drawback: For both systems to run in Parallel two control devices needed. (Currently we only model 1: TVC)
Solution: Logic to switch between attitude and position control based on position error
AAE 450 Spring 2008
Dynamics and Control

3. Results from Attitude Control Simulation50
100
150
-100
-80
-60
-40
-20 20 40 60 80
time (s)
Steer Angle (deg)
Simulated
Desired
Future Work
Figure 1: Simulated and Optimal Steer Angles by Mike Walker and Adam Waite
Develop Logic for interplay between Guidance System and Autopilot
Monte Carlo Simulations
AAE 450 Spring 2008
Dynamics and Control

4. References
1.) Fu-Kuang Yeh, Kai-Yuan Cheng, and Li-Chen Fu “Rocket Controller Design With TVC and DCS” National Taiwan University, Taipei, Taiwan 2003
AAE 450 Spring 2008
Dynamics and Control

5. AAE 450 Spring 2008
Dynamics and Control

6. Autopilot System
AAE 450 Spring 2008
Dynamics and Control

7. Guidance System
AAE 450 Spring 2008
Dynamics and Control