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  2. Charles Day (engineer) - Wikipedia

    en.wikipedia.org/wiki/Charles_Day_(engineer)

    Charles Day (May 15, 1879 – May 10, 1931) [1] [2] was an American electrical, construction and consulting engineer, and co-founder of Day & Zimmermann. He is known as a specialist in public utility management and operation, [ 3 ] and for his seminal contributions to flow charts [ 4 ] and the routing diagram .

  3. Day & Zimmermann - Wikipedia

    en.wikipedia.org/wiki/Day_&_Zimmermann

    Day & Zimmermann is a privately held company in the fields of construction, engineering, staffing and ammunition manufacture, operating out of 150 locations worldwide. Its corporate office is in Philadelphia , Pennsylvania.

  4. Electrochemical machining - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_machining

    Electrochemical machining (ECM) is a method of removing metal by an electrochemical process. It is normally used for mass production and for working extremely hard materials , or materials that are difficult to machine using conventional methods. [ 1 ]

  5. Engine control unit - Wikipedia

    en.wikipedia.org/wiki/Engine_control_unit

    Delco ECU used in General Motors vehicles built in 1996. An engine control unit (ECU), also called an engine control module (ECM), [1] is a device that controls various subsystems of an internal combustion engine.

  6. Lists of problems - Wikipedia

    en.wikipedia.org/wiki/Lists_of_problems

    The following articles contain lists of problems: List of philosophical problems; List of undecidable problems; Lists of unsolved problems; List of NP-complete problems;

  7. Fault detection and isolation - Wikipedia

    en.wikipedia.org/wiki/Fault_detection_and_isolation

    K-nearest-neighbors algorithm (kNN) is one of the oldest techniques which has been used to solve fault detection and diagnosis problems. [14] Despite the simple logic that this instance-based algorithm has, there are some problems with large dimensionality and processing time when it is used on large datasets. [15]

  8. Equivalent circuit model for Li-ion cells - Wikipedia

    en.wikipedia.org/wiki/Equivalent_circuit_model...

    The equivalent circuit model (ECM) is a common lumped-element model for Lithium-ion battery cells. [ 1 ] [ 2 ] [ 3 ] The ECM simulates the terminal voltage dynamics of a Li-ion cell through an equivalent electrical network composed passive elements, such as resistors and capacitors , and a voltage generator .

  9. Reliability block diagram - Wikipedia

    en.wikipedia.org/wiki/Reliability_block_diagram

    A reliability block diagram (RBD) is a diagrammatic method for showing how component reliability contributes to the success or failure of a redundant system. RBD is also known as a dependence diagram (DD). A reliability block diagram. An RBD is drawn as a series of blocks connected in parallel or series configuration. Parallel blocks indicate ...