Also found in: Dictionary, Thesaurus.
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 It might be outdated or ideologically biased.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 corresponding speed set value is continuously derived in interpolator task.
Chung, "A real-time predictor-corrector interpolator for CNC machining," Journal of Manufacturing Science and Engineering, Transactions of the ASME, vol.
The best interpolation method was kriging and justifies the selection of the most robust interpolator in MZs generation.
Error bounds for floating-point polynomial interpolators. IEE Electronics Letters, 35(3): 195-197.
As such, GWR can be used as a spatial interpolator for y over the spatial domain of interest.
Vertical Interpolator. After the vertical weighting coefficients are obtained, the vertical interpolation operation is performed by using (2).
As kriging is an exact interpolator, it honors data values at sample locations [5].
It is almost as if the spaces and objects are thrown into empathetic interrelationships--and the viewer moves among these scenes as an interpolator. The welded armature that holds a bronze bust of a man aloft shocks in its intimate revelation of the cognitive struggle as inchoate thought brought to a point of clarity.
For the interpolator, r is dividing into 2 parts, rh and rl, hence r = rh + rl.
Krigingis a stochastic interpolator but similar to IDW in that it also employs weighting to predict unknown values.
The idea behind the approximation is based on signal commutation, before the interpolator. In this way, the modulator will have only one interpolator in common and all the operations will develop in discrete time.
The current control architecture has two major levels which are the servo control (level 1) and the interpolator (level 2) for the axial motion control of machine tools as shown in Fig.