Naira Hovakimyan, Jan 2012

2012-01-18T17:12:39Z

Marink:

Naira Hovakimyan will visit CDS on 16 Jan 2012 (Thu). If you would like to meet with her, please sign up below.

* 11:00: Marin
* 11:45: Seminar setup
* 12:00: Seminar, 114 Steele
* 1:00: Lunch - Richard
* 2:00: Ufuk
* 2:45: Open
* 3:30: Open
* 4:15: Open
* 5:00: Open

<hr>

<center>
L1 Adaptive Control and Its Transition to Practice

'''Naira Hovakimyan''' 
UIUC
</center>

Abstract: The history of adaptive control systems dates back to early 50-s, when the aeronautical community was struggling to advance aircraft speeds to higher Mach numbers. In November of 1967, X-15 launched on what was planned to be a routine research flight to evaluate a boost guidance system, but it went into a spin and eventually broke up at 65,000 feet, killing the pilot Michael Adams. It was later found that the onboard adaptive control system was to be blamed for this incident. Exactly thirty years later, fueled by advances in the theory of nonlinear control, Air Force successfully flight tested the unmanned unstable tailless X-36 aircraft with an onboard adaptive flight control system. This was a landmark achievement that dispelled some of the misgivings that had arisen from the X-15 crash in 1967. Since then, numerous flight tests of Joint Direct Attack Munitions (JDAM) weapon retrofitted with adaptive element have met with great success and have proven the benefits of the adaptation in the presence of component failures and aerodynamic uncertainties. However, the major challenge related to stability/robustness assessment of adaptive systems is still being resolved based on testing the closed-loop system for all possible variations of uncertainties in Monte Carlo simulations, the cost of which increases with the growing complexity of the systems. This talk will give an overview of the limitations inherent to the conventional adaptive controllers and will introduce the audience to the L1 adaptive control theory, the architectures of which have guaranteed robustness in the presence of fast adaptation. Various applications, including flight tests of a subscale commercial jet, will be discussed during the presentation to demonstrate the tools and the concepts. With its key feature of decoupling adaptation from robustness L1 adaptive control theory has facilitated new developments in the areas of event-driven adaptation and networked control systems. A brief overview of initial results and potential directions will conclude the presentation.

=== Biography ===

Naira Hovakimyan received her MS degree in Theoretical Mechanics and Applied Mathematics in 1988 from Yerevan State University in Armenia. She got her Ph.D. in Physics and Mathematics in 1992, in Moscow, from the Institute of Applied Mathematics of Russian Academy of Sciences, majoring in optimal control and differential games. In 1997 she has been awarded a governmental postdoctoral scholarship to work in INRIA, France. In 1998 she was invited to the School of Aerospace Engineering of Georgia Tech, where she worked as a research faculty member until 2003. In 2003 she joined the Department of Aerospace and Ocean Engineering of Virginia Tech, and in 2008 she moved to University of Illinois at Urbana-Champaign, where she is a professor, university scholar and Schaller faculty scholar of Mechanical Science and Engineering. She has co-authored a book and more than 250 refereed publications. She is the recipient of the SICE International scholarship for the best paper of a young investigator in the VII ISDG Symposium (Japan, 1996), and also the 2011 recipient of AIAA Mechanics and Control of Flight award. She is an associate fellow and life member of AIAA, a Senior Member of IEEE, and a member of SIAM, AMS and ISDG. Her current interests are in the theory of robust adaptive control and estimation, control in the presence of limited information, networks of autonomous systems, game theory and applications of those in safety-critical systems of aerospace, mechanical, electrical and biomedical engineering.

Group Schedule, Fall 2011

2011-10-31T00:16:21Z

Marink: /* Week 10: 28 Nov - 2 Dec */

This page contains information about various upcoming events that are of interest to the group. __NOTOC__
{| width=60%
|- valign=top
| width=50% |
* [http://www.cds.caltech.edu/~murray/calendar.html Richard's calendar (travel)]
| width=50% |
* [[Group Schedule, Summer 2011]]
|}

The schedule for group and subgroup meetings is given below. Everyone should sign up for times to talk in the subgroup meetings.
* Biocircuits: everyone should speak 2-3 times per term
* NCS/robotics: grad student should speak 2 times per term, postdocs and undergrads at least once
* Students/postdocs applying for jobs: if you want to give a "job talk" in group meeting, let me know
Note that some of the meetings might need to shift; only sign up for those slots if you can make both times listed
 

{| width=100% border=1
|- valign=top
| width=30% |
=== Week 1: 26-30 Sep ===
27 Sep (Tue), 1-3 pm: Biocircuits
* Paul Nguyen
* Vanessa Jonsson
* Open (10-15 min)
28 Sep (Wed), 12 pm: Group meeting
* Hold: Pavrithra Prabhakar
28 Sep (Wed), 1-3 pm: NCS
* Richard (Boeing report)
* Scott Livingston
| width=30% |

=== Week 2: 3-7 Oct ===
3 Oct (Mon), 12 pm: Group meeting
* Dan Siegal-Gaskins
4 Oct (Tue), 1-3 pm; Biocircuits
* Enoch (10-15 min)
* Jongmin (10-15 min)
* emzo (10-15 min)
5 Oct (Wed), 1-3 pm: Robotics
* Andrea
* Dom
* ''Note'': might shift to 10:30a-12p
<hr>
ARO synthetic biology workshop Thu-Fri
* Possible lab tours on Fri morning
| width=30% |

=== Week 3: 10-14 Oct ===
No group meeting

11 Oct (Tue), 12:30-2 pm: Biocircuits
* Shaunak (10-15 min)
* Ophelia
* Open (10-15 min)
12 Oct (Wed), 1-3 pm: NCS
* Jun (15-20 min)
* Ufuk (15-20 min)
<hr>
Rob Wood visiting on 11 Oct (Tue)

Boeing Annual Review on 12 Oct (Wed)

SoCal NLC on 14 Oct (Fri) @ UCLA
|- valign=top
|

=== Week 4: 17-21 Oct ===
18 Oct (Tue), 1-3 pm: Biocircuits
* Elisa
* Marcella (10-15 min)
* Anu (10-15 min)
19 Oct (Wed), 12 pm: Group meeting
* Open
19 Oct (Wed), 1-3 pm: Robotics
* Shuo (15-20 min)
* pete (15-20 min)
|

=== Week 5: 24-28 Oct ===
25 Oct (Tue), 10:30-12: Biocircuits
* Enoch (10-15 min)
* Vanessa Jonsson
* ''Note'': might shift to 12:30-2 pm
26 Oct (Wed), 12 pm: Group meeting
* Hold: UTC visitor?
26 Oct (Wed), 3:30-5 pm: NCS
* <s>Mumu (15-20 min)</s>
* <s>Linlin (15-20 min)</s>
<hr>
MuSyC/UTC workshop on Wed-Thu
|

=== Week 6: 31 Oct - 4 Nov ===
1 Nov (Tue), 1-3 pm; Biocircuits
* dsg
* emzo (10-15 min)
* Ophelia
2 Nov (Wed), 1-3 pm: Robotics
* Stephanie (15-20 min)
* Scott Livingston
3 Nov (Thu), 12 pm: Group meeting
* Hold: Qi Song (incoming visitor)
|- valign=top
|

=== Week 7: 7-11 Nov ===
7 Nov (Mon), 1-3 pm: Biocircuits
* Jongmin (10-15 min)
* Shaunak (10-15 min)
10 Nov (Thu), 12 pm: Group meeting
* Hold: job talk
10 Nov (Thu), 1-3 pm: NCS
* Eric (15-20 min)
* Necmiye (15-20 min)
<hr>
Richard out of town Tue-Wed
|

=== Week 8: 14-18 Nov ===
No group meeting

No biocircuits meeting

18 Nov (Thu), 4-5:30 pm: Robotics
* Shuo (15-20 min)
* pete (15-20 min)
<hr>
Richard out of town Tue-Wed

MuSyC workshop/review Wed-Fri

MPP STC proposal meeting, 13-14 Nov
|

=== Week 9: 21-25 Nov ===
22 Nov (Tue), 12:30-2 pm: Biocircuits
* Elisa
* Marcella (10-15 min)
* emzo (10-15 min)
23 Nov (Wed), 12 pm: group meeting
* Dionysios
23 Nov (Wed), 1-3 pm: NCS
* Mumu (15-20 min)
* Eric (15-20 min)
<hr>
Thanksgiving holiday: Thu-Fri
|- valign=top
|

=== Week 10: 28 Nov - 2 Dec ===
29 Nov (Tue), 1-3 pm: Biocircuits
* Vanessa Jonsson
* dsg
* Ophelia
30 Nov (Wed), 12 pm: Group meeting
* Tim Bretl (UIUC)
30 Nov (Wed), 1-3 pm: Robotics
* Dom
* Open (15-20 min)
|

=== Week 11: 5-9 Dec ===
Final weeks week, Richard out of town

No group or subgroup meetings
|
=== Week 12: 12-16 Dec ===
CDC week, Richard (probably) in town

Group and subgroup meetings TBD
|}

Murray Wiki - User contributions [en]

Naira Hovakimyan, Jan 2012

Group Schedule, Fall 2011