When.com Web Search

Search results

  1. Results From The WOW.Com Content Network
  2. On- and off-hook - Wikipedia

    en.wikipedia.org/wiki/On-_and_Off-hook

    The idle state, i.e., an open loop of a subscriber line or PBX user loop. An operating state of a telecommunication circuit in which transmission is disabled and a high impedance, or "open circuit", is presented to the link by the end instrument(s). Note: during the on-hook condition, the link is responsive to ringing signals.

  3. Open-loop controller - Wikipedia

    en.wikipedia.org/wiki/Open-loop_controller

    In control theory, an open-loop controller, also called a non-feedback controller, is a control loop part of a control system in which the control action ("input" to the system [1]) is independent of the "process output", which is the process variable that is being controlled. [2]

  4. Control loop - Wikipedia

    en.wikipedia.org/wiki/Control_loop

    A control loop is the fundamental building block of control systems in general and industrial control systems in particular. It consists of the process sensor, the controller function, and the final control element (FCE) which controls the process necessary to automatically adjust the value of a measured process variable (PV) to equal the value of a desired set-point (SP).

  5. Control theory - Wikipedia

    en.wikipedia.org/wiki/Control_theory

    A control problem can have several specifications. Stability, of course, is always present. The controller must ensure that the closed-loop system is stable, regardless of the open-loop stability. A poor choice of controller can even worsen the stability of the open-loop system, which must normally be avoided.

  6. Supervision (telephony) - Wikipedia

    en.wikipedia.org/wiki/Supervision_(telephony)

    An open switching interval (OSI), also called open loop disconnect, is a period of time for which the central office battery is removed from a telephone line. The removal of battery may be used to signal the disconnection (disconnect supervision) of the telephone circuit.

  7. An Iraq War vet is facing deportation. This veterans' group ...

    www.aol.com/iraq-war-vet-facing-deportation...

    Marlon Parris just wanted to stop by the ATM. The Iraq war veteran had left his home in Laveen, Arizona, on the morning of Jan. 22 when he was swarmed by a half-dozen black SUVs. Officers with ...

  8. Your tax refund could be in danger thanks to the ongoing ...

    www.aol.com/finance/tax-refund-could-danger...

    This includes reaching out to them early and having an open, honest line of communication. Take advantage of extensions If you don’t manage to get your tax documents in proper shape by April 15 ...

  9. Full state feedback - Wikipedia

    en.wikipedia.org/wiki/Full_state_feedback

    Full state feedback (FSF), or pole placement, is a method employed in feedback control system theory to place the closed-loop poles of a plant in predetermined locations in the s-plane. [1] Placing poles is desirable because the location of the poles corresponds directly to the eigenvalues of the system, which control the characteristics of the ...