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  2. Flight envelope - Wikipedia

    en.wikipedia.org/wiki/Flight_envelope

    A V-n diagram showing V S (stall speed at 1G), V C (corner/maneuver speed) and V D (dive speed) A chart of velocity versus load factor (or V-n diagram) is another way of showing limits of aircraft performance. It shows how much load factor can be safely achieved at different airspeeds. [3]

  3. Surrogate model - Wikipedia

    en.wikipedia.org/wiki/Surrogate_model

    Initial sample selection (the experiments and/or simulations to be run) Construct surrogate model; Search surrogate model (the model can be searched extensively, e.g., using a genetic algorithm, as it is cheap to evaluate) Run and update experiment/simulation at new location(s) found by search and add to sample

  4. N2 chart - Wikipedia

    en.wikipedia.org/wiki/N2_Chart

    N 2 chart example. [1] The N 2 chart or N 2 diagram (pronounced "en-two" or "en-squared") is a chart or diagram in the shape of a matrix, representing functional or physical interfaces between system elements. It is used to systematically identify, define, tabulate, design, and analyze functional and physical interfaces.

  5. Stateflow - Wikipedia

    en.wikipedia.org/wiki/Stateflow

    Stateflow (developed by MathWorks) is a control logic tool used to model reactive systems via state machines and flow charts within a Simulink model. Stateflow uses a variant of the finite-state machine notation established by David Harel, enabling the representation of hierarchy, parallelism and history within a state chart.

  6. Nichols plot - Wikipedia

    en.wikipedia.org/wiki/Nichols_plot

    A Nichols plot. The Nichols plot is a plot used in signal processing and control design, named after American engineer Nathaniel B. Nichols. [1] [2] [3] It plots the phase response versus the response magnitude of a transfer function for any given frequency, and as such is useful in characterizing a system's frequency response.

  7. Cobweb plot - Wikipedia

    en.wikipedia.org/wiki/Cobweb_plot

    An animated cobweb diagram of the logistic map = (), showing chaotic behaviour for most values of >. A cobweb plot , known also as Lémeray Diagram or Verhulst diagram is a visual tool used in the dynamical systems field of mathematics to investigate the qualitative behaviour of one-dimensional iterated functions , such as the logistic map .

  8. Constant-Q transform - Wikipedia

    en.wikipedia.org/wiki/Constant-Q_transform

    The short-time Fourier transform of x[n] for a frame shifted to sample m is calculated as follows: [,] = = [] [] /.Given a data series at sampling frequency f s = 1/T, T being the sampling period of our data, for each frequency bin we can define the following:

  9. V-model - Wikipedia

    en.wikipedia.org/wiki/V-Model

    The V-model falls into three broad categories, the German V-Modell, a general testing model, and the US government standard. [2] The V-model summarizes the main steps to be taken in conjunction with the corresponding deliverables within computerized system validation framework, or project life cycle development. It describes the activities to ...