Murray Wiki - User contributions [en]

Henrik Sandberg, July 2012

2012-07-29T19:27:12Z

Rrogerst: /* Tuesday */

Henrik Sandberg will be visiting CDS on 30-31 July (Tue-Wed). __NOTOC__

=== Schedule ===
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==== Monday ====
* 10 am: Open
* 11 am: Seminar, 213 Annenberg
* 12 noon: Lunch, hosted by Nikolai
<hr>
* 1:30 pm: Matanya Horowitz & Nikolai
* 2:15 pm: Shuo Han
* 3:00 pm: Open
* 3:45 pm: KISS workshop on ultra-reliability
|

==== Tuesday ====
* 10 am: Enoch
* 10:45 am: Eric Wolff
* 11:30 am: Open
<hr>
* 1:30 pm: Aristo
* 2:15 pm: Open
* 3:00 pm: Robert Rogersten & Giulia Ripellino
* 3:45 pm: Open
* 4:30 pm: Open
<hr>
* 6:30 pm: Richard
|}

=== Abstract ===

'''Synthesis of Models using Lossless Components and Some Related Design Trade-Offs'''

Speaker: Henrik Sandberg 
Affiliation: Electrical Engineering, KTH 
Date and time: Monday, 30 July 2012 - 11:00am 
Location: 213 Annenberg 

The area of network synthesis deals with how to implement mathematical models using a well-defined set of physical components. This area was thoroughly studied in the circuits community in the 1960-1970's, using components such as resistors, transformers, capacitors, inductors, and operational amplifiers. Today similar questions are being asked in synthetic biology and in mechanics, only now the given sets of physical components are very different. Typical questions of interest are to characterize what type of mathematical models can be implemented for given sets of components, and the minimal number of components required for a specific model.

In this talk, we address the problem of synthesizing some classes of active and passive mathematical models using only a small number of lossless physical components. The set of lossless components are relevant since they conserve energy and if we intend to implement anything on a microscopic level, for example a micro machine, we will need to respect this limitation. In our earlier work we have shown that linear models are passive if, and only if, they can be approximated to any desired degree of accuracy by a linear lossless system, over any fixed time horizon. Typically this requires a huge number of lossless components, however, which results in thermal noise as quantified by the fluctuation-dissipation theorem. Here we will see that by allowing the linear lossless components to be time-varying, not only can we avoid some thermal noise, but we can also synthesize some active components. Given the importance of active components such as operational amplifiers this is encouraging. The price for the decrease in implementation complexity is a need for an external power supply. We illustrate the control-theoretic relevance of these results by means of a few examples and design trade-offs.

SURF meetings, July 2012

2012-06-28T22:19:40Z

Rrogerst: /* Mon, 2 Jul */

Please sign up for one of the slots below: __NOTOC__

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==== Mon, 2 Jul ====
* 9:30 am: Vinay (Dan)
* 9:50 am: Robert (Necmiye, Mumu, Ufuk)
* 10:10 am: Nick (Necimye, Ufuk & Pavithra)
* 10:30 am: Giulia (Vanessa)
* 10:50 am: Adam (Andrea)
* 11:10 am: Alex (Scott & Pavithra)

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==== Tue, 3 Jul ====
* 9:20 am: Ishan (Dan)
* 9:40 am: Giulia (Elisa)
 
* 10:50 am: Shaunak(Jongmin)
* 11:10 am: Patrik(Jongmin)

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==== Wed, 4 Jul ====
* Institute holiday

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==== Thu, 5 Jul ====
* No calls

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==== Fri, 6 Jul ====
* 9:20 am: open
* 9:40 am: open
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Group Schedule, Summer 2012

2012-06-20T18:50:29Z

Rrogerst: /* Week 6: 23-27 July */

This page contains information about various upcoming events that are of interest to the group. __NOTOC__
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* [http://www.cds.caltech.edu/~murray/calendar.html Richard's calendar (travel)]
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* [[Group Schedule, Spring 2012]]
|}

The schedule for group and subgroup meetings is given below. Everyone should sign up for times to talk in the subgroup meetings. Unless otherwise noted, here are the locations of the meetings:
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* Group meetings - 213 ANB
* Subgroup lunches - 114 Steele lab
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* Biocircuits - 111 Keck
* NCS/Robotics - 110 Steele
|}

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=== Week 1: 18-22 June ===

'''Biocircuits: 21 Jun (Thu), 10 am - 12 pm'''
* SURF introductions (40 min)
* Ophelia (20-30 min)
* Shaunak K (10-15 min)
* Lab updates

'''Group meeting: 21 Jun (Thu), 12-1'''
* Richard (research overview)

'''NCS/Robotics: 21 Jun (Thu), 4-6 pm'''
* SURF introductions (20 min)
* Eric (15-20 min)
* Clemens (15-20 min)
* Project updates

<hr>
* Richard out of town Mon-Tue
* SURF students start on Tue
** SURF kickoff: Wed @ 10 am in 114 Steele
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=== Week 2: 25-29 June ===
* American Control Conference (Montreal)
* Richard out of town all week
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=== Week 3: 2-6 July ===
* Richard out of town all week
* Institute holiday on Wed
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=== Week 4: 9-13 July ===
'''Biocircuits: 9 Jul (Mon), 10 am - 12 pm'''
* Victoria (25-30 min)
* Anu (10-15 min)
* Jongmin (10-15 min)
* Instrument: Microscope/CellASIC
* Lab updates

'''Group meeting: 13 Jul (Fri), 12-1:15'''
* Tim Sullivan (Owhadi group)

'''NCS/Robotics: 13 Jul (Fri), 1:15-3 pm'''
* Meet in 114 Steele
* Stephanie (15-20 min)
* Necmiye (15-20 min)
* Research update (15-20 min)
* Project updates

<hr>
* Richard out of town Tue pm - Thu (Living Foundries PI meeting)
|

=== Week 5: 16-20 July ===
'''Biocircuits: 17 Jul (Tue), 10 am - 12 pm'''
* Research update (30-40 min)
* Zach (10-15 min)
* SURF: Vinay V (10-15 min)
* SURF update (10-15 min)
* Instrument: Computing
* Lab updates

'''NCS/Robotics: 18 Jul (Wed), 4-6 pm'''
* Mumu (15-20 min)
* Shuo (15-20 min)
* SURF update (10-15 min)
* SURF update (10-15 min)
* Project updates

'''Group meeting: 19 Jul (Thu), 12-1:15'''
* Chin-Lin Guo (BE)
<hr>
* Shaunak K SURF presentation
|

=== Week 6: 23-27 July ===
'''Biocircuits: 24 Jul (Tue), 10 am - 12 pm'''
* Emzo (30-40 min)
* Enoch (10-15 min)
* SURF update (10-15 min)
* SURF update (10-15 min)
* Instrument: FACSCalibur/Quanta
* Lab updates

'''Group meeting: 25 Jul (Wed), 12-1:15'''
* Clemens Wiltsche

'''NCS/Robotics: 25 Jul (Wed), 4-6 pm'''
* Pavithra (15-20 min)
* Clemens (10-15 min)
* SURF: Robert (10-15 min)
* SURF update (10-15 min)
* Project updates
<hr>
* Richard out of town Thu-Fri
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|

=== Week 7: 30 July - 3 August ===
'''Biocircuits: 31 Jul (Tue), 12-1:30 pm'''
* Lunch meeting, 114 Steele; may shift to Thu
* Research presentation (30-40 min)
* SURF update (10-15 min)
* SURF update (10-15 min)
* Lab updates

'''NCS/Robotics: 1 Aug (Wed), 12-1:30 pm'''
* Lunch meeting, 114 Steele; may shift to Thu
* Eric (15-20 min)
* Ufuk (15-20 min)
* Project updates

<hr>
* KISS workshop; Richard unavailable
|

=== Week 8: 6-10 August ===
'''Biocircuits: 7 Aug (Tue), 10 am - 12 pm'''
* Dan (30-40 min)
* Victoria (10-15 min)
* Marcella (10-15 min)
* Instrument: Victor X3/BioTek H1MF
* Lab updates

'''Group meeting: 8 Aug (Wed), 12-1:15'''
* Open

'''NCS/Robotics: 8 Aug (Wed), 4-6 pm'''
* Scott Livingston (15-20 min)
* Research update (15-20 min)
* Research update (15-20 min)
* Project updates

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=== Week 9: 13-17 August ===
* Richard out all week
|- valign=top
|

=== Week 10: 20-24 August ===
'''Biocircuits: 22 Aug (Wed), 10 am - 12 pm'''
* Anu (30-40 min)
* Research presentation [non-MPP] (10-15 min)
* Research update [non-MPP] (10-15 min)
* Instrument: freezers/cold room
* Lab updates

'''NCS/Robotics: 22 Aug (Wed), 4-6 pm'''
* Research update (15-20 min)
* Research update (15-20 min)
* Research update (15-20 min)
* Project updates

'''Group meeting: 23 Aug (Thu), 12-1:15'''
* Lea Goentoro (Bi)
<hr>
* MPP retreat, Sun-Tue
|

=== Week 11: 27-31 August ===
'''Biocircuits: 28 Aug (Tue), 10 am - 12 pm'''
* Jongmin (30-40 min)
* Research update (10-15 min)
* Research update (10-15 min)
* Instruments: Nanodrop/electroporator
* Lab updates

'''NCS/Robotics: 29 Aug (Wed), 4-6 pm'''
* Mumu (15-20 min)
* Research update (15-20 min)
* Research update (15-20 min)
* Project updates

'''Group meeting: 30 Aug (Thu), 12-1:15'''
* Open
<hr>
* Richard out of town on Fri
|

=== Week 12: 3-7 September ===
'''Biocircuits: 4 Sep (Tue), 10 am - 12 pm'''
* Marcella (30-40 min)
* Research update (10-15 min)
* Research update (10-15 min)
* Instrument: gel rigs/gel imager
* Lab updates

'''NCS/Robotics: 5 Sep (Wed), 4-6 pm'''
* Necmiye (15-20 min)
* Scott Livingston (15-20 min)
* Research update (15-20 min)
* Project updates

'''Group meeting: 6 Sep (Thu), 12-1:15'''
* Ram Vasudevan (UC Berkeley)
<hr>
* Institute holiday on Mon
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|

=== Week 13: 10-14 September ===
'''Biocircuits: 11 Sep (Tue), 10 am - 12 pm'''
* Zach (30-40 min)
* Research update (10-15 min)
* Research update (10-15 min)
* Instrument: PCR machines/centrifuges
* Lab updates

'''NCS/Robotics: 12 Sep (Wed), 4-6 pm'''
* Ufuk (15-20 min)
* Shuo (15-20 min)
* Research update (15-20 min)
* Project updates

'''Group meeting: 13 Sep (Thu), 12-1:15'''
* Yong Huang (J. Beck group)
<hr>
* Richard out on Fri
|

=== Week 14: 17-21 September ===
* Richard out all week
|
=== Week 15: 24-28 September ===
'''Biocircuits: 25 Sep (Tue), 10 am - 12 pm'''
* Enoch (30-40 min)
* Emzo (10-15 min)
* Dan (10-15 min)
* Lab updates

'''NCS/Robotics: 26 Sep (Wed), 4-6 pm'''
* Stephanie (15-20 min)
* Research update (15-20 min)
* Research update (15-20 min)
* Project updates

'''Group meeting: 26 Sep (Thu), 12-1:15'''
* Open
<hr>
* Richard out on Mon
|}