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  2. Proportional–integral–derivative controller - Wikipedia

    en.wikipedia.org/wiki/Proportional–integral...

    A proportional–integral–derivative controller (PID controller or three-term controller) is a feedback-based control loop mechanism commonly used to manage machines and processes that require continuous control and automatic adjustment.

  3. Pelvic inflammatory disease - Wikipedia

    en.wikipedia.org/wiki/Pelvic_inflammatory_disease

    Pelvic inflammatory disease, also known as pelvic inflammatory disorder (PID), is an infection of the upper part of the female reproductive system, mainly the uterus, fallopian tubes, and ovaries, and inside of the pelvis.

  4. PID - Wikipedia

    en.wikipedia.org/wiki/PID

    PID controller (proportional-integral-derivative controller), a control concept used in automation; Piping and instrumentation diagram (P&ID), a diagram in the process industry which shows the piping of the process flow etc. Principal ideal domain, an algebraic structure; Process identifier, a number used by many operating systems to identify a ...

  5. Persistent identifier - Wikipedia

    en.wikipedia.org/wiki/Persistent_identifier

    An introduction to persistent identifiers and FAIR data.. A persistent identifier (PI or PID) is a long-lasting reference to a document, file, web page, or other object.. The term "persistent identifier" is usually used in the context of digital objects that are accessible over the Internet.

  6. Principal ideal domain - Wikipedia

    en.wikipedia.org/wiki/Principal_ideal_domain

    If x and y are elements of a PID without common divisors, then every element of the PID can be written in the form ax + by, etc. Principal ideal domains are Noetherian, they are integrally closed, they are unique factorization domains and Dedekind domains. All Euclidean domains and all fields are principal ideal domains.

  7. Ziegler–Nichols method - Wikipedia

    en.wikipedia.org/wiki/Ziegler–Nichols_method

    The Ziegler–Nichols tuning (represented by the 'Classic PID' equations in the table above) creates a "quarter wave decay". This is an acceptable result for some purposes, but not optimal for all applications. This tuning rule is meant to give PID loops best disturbance rejection. [2]

  8. PID algorithm - Wikipedia

    en.wikipedia.org/?title=PID_algorithm&redirect=no

    This page was last edited on 13 August 2023, at 10:52 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may ...

  9. Potential-induced degradation - Wikipedia

    en.wikipedia.org/wiki/Potential-induced_degradation

    Potential-induced degradation (PID) is a potential-induced performance degradation in crystalline photovoltaic modules, caused by so-called stray currents. This effect may cause power loss of up to 30 percent.