References in periodicals archive ?
The time series on the TRs starting from daytime and nighttime through the monitoring period are shown in Figure 16A and B, respectively, on which the spline curves interpolated with the loess function are superimposed.
The other method is using trajectory tracking guidance, which takes aerodynamic influence and system uncertainty as disturbance factors to track online generated spline curves. The tracking control law can be described as
Figure 2 shows the Ferguson curves with different parameters, where the solid line is the standard Ferguson spline curve with [[lambda].sub.i] = [[mu].sub.i] = 0, the parameters [[lambda].sub.i] = 2, [[mu].sub.i] = -2 are for the dot-dash line, and [[lambda].sub.i] = -2, [[mu].sub.i] = 2 are for dashed line.
The spline curves [c.sub.i] parallel to the OXZ plane will be transversal sections, and the curves [[gamma].sub.i] parallel to the OYZ plane, longitudinal sections, (Figs.
As with [PM.sub.10], the spline curves are roughly linear, consistent with the absence of a threshold.
We mentioned the use of spline curves (B-spline) without mentioning the definition and their usage; thereof, curve splines such are interpolation curves controlled by points which are respect the condition and continuity of the curve.
These splines are used to define trigonometric spline curves. As special cases, the author also introduces a class of cubic trigonometric polynomial basis functions used to construct trigonometric Beezier curves.
It can be seen that the spline curves preserve the positive shape of the data well and they all achieve [C.sup.1] continuity.
[13]constructed shape preserving quartic trigonometric interpolation spline curves with shape parameters.
(1999) considered the cable as cubic spline curve in nine node Lagrangean element.