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  2. Settling time - Wikipedia

    en.wikipedia.org/wiki/Settling_time

    Tay, Mareels and Moore (1998) defined settling time as "the time required for the response curve to reach and stay within a range of certain percentage (usually 5% or 2%) of the final value." [ 2 ] Mathematical detail

  3. Step response - Wikipedia

    en.wikipedia.org/wiki/Step_response

    The settling time is the time for departures from final value to sink below some specified level, say 10% of final value. The dependence of settling time upon μ is not obvious, and the approximation of a two-pole system probably is not accurate enough to make any real-world conclusions about feedback dependence of settling time.

  4. Proportional–integral–derivative controller - Wikipedia

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

    The dead time θ is the amount of time between when the step change occurred and when the output first changed. The time constant (τ p) is the amount of time it takes for the output to reach 63.2% of the new steady-state value after the step change. One downside to using this method is that it can take a while to reach a new steady-state value ...

  5. Poincaré plot - Wikipedia

    en.wikipedia.org/wiki/Poincaré_plot

    An RR tachograph is a graph of the numerical value of the RR-interval versus time. In the context of RR tachography, a Poincaré plot is a graph of RR(n) on the x-axis versus RR(n + 1) (the succeeding RR interval) on the y-axis, i.e. one takes a sequence of intervals and plots each interval against the following interval. [3]

  6. Step detection - Wikipedia

    en.wikipedia.org/wiki/Step_detection

    It is usually considered as a special case of the statistical method known as change detection or change point detection. Often, the step is small and the time series is corrupted by some kind of noise, and this makes the problem challenging because the step may be hidden by the noise. Therefore, statistical and/or signal processing algorithms ...

  7. Point and figure chart - Wikipedia

    en.wikipedia.org/wiki/Point_and_figure_chart

    Point and figure (P&F) is a charting technique used in technical analysis. Point and figure charting does not plot price against time as time-based charts do. Instead it plots price against changes in direction by plotting a column of Xs as the price rises and a column of Os as the price falls. [1] [2]

  8. Cobweb plot - Wikipedia

    en.wikipedia.org/wiki/Cobweb_plot

    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.

  9. Price point - Wikipedia

    en.wikipedia.org/wiki/Price_point

    Demand curves resemble a series of waves rather than a straight line. [2] The diagram shows price points at the points labeled A, B, and C. When a vendor increases a price beyond a price point (say to a price slightly above price point B), sales volume decreases by an amount more than proportional to the price increase. This decrease in ...