Observer-Based Sequential Control of a Two Time Scale Spring-Mass-Damper System Conference Paper uri icon


  • 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. This paper extends the method of sequential control for two-time-scale systems from full-state feedback to output feedback. A two-time-scale observer based on the reduced slow and fast subsystems is developed to accompany the full-state feedback controller designed using the sequential method. Depending on whether one of the states or a combination of the two states is measured, different Lyapunov-based observer designs are investigated. Results in the paper demonstrate that Lyapunov-based design procedures for full-state feedback controllers can be extended to two-time-scale observers. The observer design uses lower-order reduced subsystems and does not require knowledge of the perturbation parameter. The observer dynamics are chosen such that the closed-loop stability of the reduced subsystems in the sense of Lyapunov is guaranteed. The observer-based technique is demonstrated on a nonlinear two-time-scale spring-mass-damper system.

name of conference

  • AIAA Guidance, Navigation, and Control Conference

published proceedings

  • AIAA Guidance, Navigation, and Control Conference

author list (cited authors)

  • Saha, D., & Valasek, J.

citation count

  • 2

complete list of authors

  • Saha, Dipanjan||Valasek, John

publication date

  • January 2016