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  2. Unity (ISS module) - Wikipedia

    en.wikipedia.org/wiki/Unity_(ISS_module)

    Unity, also known as Node 1, is the first U.S.-built component of the International Space Station (ISS). This cylindrical module, constructed of steel by Boeing for NASA , serves as the critical link between the orbiting laboratory's Russian Orbital Segment and US Orbital Segment .

  3. Open-loop controller - Wikipedia

    en.wikipedia.org/wiki/Open-loop_controller

    A good example of this is a central heating boiler controlled only by a timer, so that heat is applied for a constant time, regardless of the temperature of the building. The control action is the switching on/off of the boiler, but the controlled variable should be the building temperature, but is not because this is open-loop control of the ...

  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. Sentry (monitoring system) - Wikipedia

    en.wikipedia.org/wiki/Sentry_(monitoring_system)

    Sentry is an automated impact prediction system started in 2002 and operated by the Center for Near Earth Object Studies (CNEOS) at NASA's Jet Propulsion Laboratory. It continually monitors the most up-to-date asteroid catalog for possibilities of future impact with Earth over the next 100+ years. [1]

  6. Open-loop gain - Wikipedia

    en.wikipedia.org/wiki/Open-loop_gain

    The open-loop gain is a physical attribute of an operational amplifier that is often finite in comparison to the ideal gain. While open-loop gain is the gain when there is no feedback in a circuit, an operational amplifier will often be configured to use a feedback configuration such that its gain will be controlled by the feedback circuit components.

  7. Habitation Extension Modules - Wikipedia

    en.wikipedia.org/wiki/Habitation_Extension_Modules

    The Habitation Extension Modules (HEM) refers to proposed British-built modules designed to connect to Node 3 (Tranquility) of the International Space Station. They were conceived by a consortium of engineers and scientists led by Mark Hempsell , aeronautical engineer at the University of Bristol .

  8. Closed-loop transfer function - Wikipedia

    en.wikipedia.org/wiki/Closed-loop_transfer_function

    The closed-loop transfer function is measured at the output. The output signal can be calculated from the closed-loop transfer function and the input signal. Signals may be waveforms, images, or other types of data streams.

  9. SGR-A1 - Wikipedia

    en.wikipedia.org/wiki/SGR-A1

    The SGR-A1 is a type of autonomous sentry gun that was jointly developed by Samsung Techwin (now Hanwha Aerospace) and Korea University to assist South Korean troops in the Korean Demilitarized Zone. It is widely considered as the first unit of its kind to have an integrated system that includes surveillance, tracking, firing, and voice ...