Controllability is an important property of a control system, and the controllability property plays a crucial role in many control problems, such as stabilization of unstable systems by feedback, or optimal control.
Controllability and observability are dual aspects of the same problem.
Roughly, the concept of controllability denotes the ability to move a system around in its entire configuration space using only certain admissible manipulations. The exact definition varies slightly within the framework or the type of models applied.
The following are examples of variations of controllability notions which have been introduced in the systems and control literature:
State controllability
Output controllability
Controllability in the behavioural framework

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  1. gene of oregon

    National  Gun Control Bill Would Restrict Vets' 2nd Amendment Rights

    I knew this was going to eventually come about. This really F---ing pisses me off!! The liberal left really don't know how F---ing close they are to a civil uprising the way their headed!! Gun Control Bill Would Restrict Vets' 2nd Amendment Rights, Lawmaker Says
  2. B

    Washington  Today, 2/19/19 10:00 AM Committee Meetings on Gun Control

    SB 5745 Expansion of Extreme Risk Protection Orders: Video Link, 10:00 Today: watch – TVW, Washington States' Public Affairs Network Take Action, make your voice heard: NRA-ILA | Washington: Hearing for Bill to Expand Gun Seizures Without Due Process Email, Call, Share, Repeat. Boss
  3. L

    National  Act against sweeping gun control

    FPCAction.org - FPC Grassroots Army: Take Action! There's a lot of gun control sweeping the nation. It took me about 15 minutes to click on each. There are form letters, just a few clicks of the mouse and send off letters opposing gun control and supporting gun rights. This is for federal...
  4. WoodsPlinker

    National  Giffords Gun Control Org Releases Annual Gun Control Scorecard – How Did Your State Do?

    Giffords Gun Control Org Releases Annual Gun Control Scorecard - How Did Your State Do? - The Truth About Guns *Sigh* They aren't even trying to hide their agenda for each state.
  5. Joe Link

    Oregon  Liberal Gun Club to Lobby Against ‘Draconian’ Oregon Gun Control Bill

    Liberal Gun Club to Lobby Against 'Draconian' Oregon Gun Control Bill
  6. Joe Link

    National  Kamala Harris has an extreme idea to get gun control legislation passed

    Senator Kamala Harris has an extreme idea to get gun control legislation passed
  7. rdb241

    Ben Shapiro on gun control

  8. Joe Link

    National  Democrats Are Newly Emboldened on Gun Control

    Democrats Have Introduced Bold Gun-Control Legislation - The Atlantic
  9. Joe Link

    Other State  Gov. Gavin Newsom makes aggressive, early moves on his gun control agenda for California

    Gov. Gavin Newsom makes aggressive, early moves on his gun control agenda for California
  10. Joe Link

    Washington  Washington state legislature considers 4 new gun control bills

    Washington state legislature considers 4 new gun control bills
  11. L

    Voice your opinion on WA gun control TODAY

    Make your voice known. Take 5 minutes or less to click some buttons. Washington State Legislature Pro on HB 1024, and Con on the rest (magazine bans, more DV laws, ghost guns, reporting stolen guns). And for those that don't know, HB 1024 - Prohibits the department of licensing from keeping...
  12. Patriot1668

    National  Gun Control

    How about one big collective cheer for Captain Obvious...... Majority of guns used by criminals bought on black market, study shows :rolleyes:
  13. Nick Burkhardt

    Other State  Houston homeowner shoots 5 invaders with his AK-47 killing 3

    Houston Police have cleared the scene where 5 men where shot by a homeowner with a fully loaded AK-47, killing 3. This has been the hot 2A story of the day and the homeowners weapon was just released. Listen to the video, the print story has not been updated yet. 5 shot, 3 killed after...
  14. BSG 75

    Washington  SB 5172: Washington State Senator Proposes Firearms Test for Politicians Who Want More Gun Control

    This is a great idea. Lord knows they need some education. EDIT: link to the bill SB 5172 http://lawfilesext.leg.wa.gov/biennium/2019-20/Pdf/Bills/Senate Bills/5172.pdf EDIT: I sent an email to my state senator with links to the story and the bill asking for a similar bill to be...
  15. arakboss

    National  It's Fair To Say That Gun Control Laws Are Mostly Regressive And Hurt Poor Folk More

    Permit fees, background check fees, transfer fees, NFA taxes, weapon restrictions, magazine cap restrictions, etc, place a greater financial burden on lower income folks compared to wealthy folks like Sen Wagner and the rest of his ilk. These poor folks are the same constituents the antis claim...
  16. Joe Link

    National  Democratic drive for gun control reflects rapidly changing political dynamic

    https://www.washingtonpost.com/politics/democratic-drive-for-gun-control-reflects-rapidly-changing-political-dynamic/2019/01/08/1922cde2-1361-11e9-ab79-30cd4f7926f2_story.html
  17. Chee-to

    Senator Feinstein Rails Against Gun Owners of America

    Senator Feinstein Rails Against Gun Owners of America...................:D Gun Owners of America today filed its lawsuit challenging the Trump administration's illegal and unconstitutional bump stock ban. GOA's action came on the same day the administration published the regulations in the...
  18. RicInOR

    Other State  Gun Control Advocate Has To Surrender 23 Guns On Arrest.

    HYPOCRISY: Staunch Gun Control Advocate Has To Surrender 23 Guns On Arrest.
  19. YOUNG GUNER

    2 experienced hunter with good maner moved from SoCo looking for some Varmints control activities!

    Happy new year, I am happy to have my second new year and Christmas in this pretty evergreen land of freedom, dump the 10 rd mag and got the CPL! My great friend Tony and I are looking for some Varmints control activities! We heard a lot of story about Deer's and Elk's population declining due...
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