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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



an analog or digital computing device for the determination of the coordinates of a point moving continuously along an analytically given curve.

Interpolators are used as control devices in programmed control systems; the output signals of the interpolator act directly or with the help of intermediate carriers (perforated or magnetic tapes) on the drive mechanism of the working tool of the controlled object (for example, a metal-cutting lathe), with the result that the working tool moves in space or in a plane along the required curve. The method for giving the parameters of the curve depends on the type of interpolator and the method used to solve the equation of the curve.

The simplest interpolators are continuous-action (analog) interpolators for determining straight-line segments potentiometers, certain types of compensators). A potentiometer in the circuit of a linear interpolator controls the motion of the working tool along one coordinate axis. The voltage supplied to the potentiometer is proportional to the length of the segment to be worked, whereas the voltage taken off by the slide of the potentiometer is proportional to the coordinate of the moving point, that is, to the required displacement of the working tool.

A discrete-action (digital) interpolator is a computing device whose initial data are coded (binary, decimal) numbers and whose output signal is a series of uniform discrete electrical pulses or simple phase shifts, each of which causes an elementary movement of the working tool of the device being controlled. The basic elements of discrete interpolators are digital integrators, various combinations of which form interpolators that work out straight lines, circles, hyperbolas, parabolas, and other figures.


Chernyshev, A. V., and A. B. Iakhin. Avtomatizatsiia obrabotki na metal-lorezhushchikh stankakh s primeneniem programmnogo upravleniia. Moscow, 1959.
Tsifrovye analogi dlia sistem avtomaticheskogo upravleniia. Moscow-Leningrad, 1960.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The proposed algorithm cannot use a single motion vector to perform block-based MCI but adopts motion vectors of the interpolated block and its 8-neighbor blocks to jointly interpolate the target block.
In the aforementioned 5-axes aerospace contouring, if A and B are the orientation axes, and if you want to interpolate in 5-space, the FGROUP command would be FGROUP(X, Y, Z, A, B).
To contrast Minimal Hermite interpolation with regular Hermite interpolation, compare the "success" of harmonic polynomials to failure of regular six-dimensional space polynomials [[PI].sup.2.sub.2] that do not interpolate functions [[delta].sub.u], [[delta].sub.v], [[delta].sub.u] [omicron] [partial derivative]/[partial derivative]x, [[delta].sub.u] [omicron] [partial derivative]/[partial derivative]y, [[delta].sub.v] [omicron] [partial derivative]/[partial derivative]x, [[delta].sub.v] [omicron] [partial derivative]/[partial derivative]y for any points u and v.
This is a practical concern where a wavelength offset may be present in measurements, although in general it is a better practice to retain the wavelength values of the measured points and interpolate weighting functions such as the illuminant or the colorimetric response functions as these carry no uncertainty.
Then interpolate the first quarter again, embed hidden data in the peak point and expand in the left direction (subtract 1 bit).
Given a set of nodes [p.sub.i] = ([x.sub.i], [y.sub.i], [z.sub.i]) arbitrarily distributed on the surface of the unit sphere U = {(x, y, z) [elements of] [R.sup.3]: [x.sup.2] + [y.sup.2] + [z.sup.2] = 1}, along with associated data values [w.sub.i], the package constructs a surface F [elements of] [C.sup.1](U) which either interpolates or smoothes the data.
Interpolate between the blue lines to find the altitude of the Venus-Moon pair above your horizon at the time of the event.
So, engineers must interpolate data to determine the dropout voltage for a given output current.
Singular moments are caught in memory, emblazon themselves on the mind, and perhaps interpolate themselves later in connection with other images.
C-Design also includes "utility tools" that will automatically interpolate data for new materials from those for related grades in the database.
To find when either occultation happens at your site, interpolate between the yellow time lines on the map.
The tool gives every CNC machine the ability to interpolate large and deep bores in a very short time, with any diameter bore possible within the tool's working range.