SU1104073A1

SU1104073A1 - Process for exciting ultrasonic vibrations of carrying member of vibrating conveyer

Info

Publication number: SU1104073A1
Application number: SU823550629A
Authority: SU
Inventors: Олег Викторович Виноградов
Original assignee: Институт электроники АН БССР
Priority date: 1982-12-14
Filing date: 1982-12-14
Publication date: 1984-07-23

Abstract

СПОСОВ ВОЗБУЖДЕНИЯ УЛЬТРАЗВУКОВЫХ КОЛЕВАНИЙ НЕСУЩЕГО ОРГАНА ВИБРАЦИОННОГО КОНВЕЙЕРА, включающий возбуждение ультразвуковых волн в несущем органе и изменение их частоты колебаний, отличающийс тем, что, с целью повышени точности перемещени малогабаритных объектов на несущем органе, ультразвуковые волны направл ют навстречу друг другу, одновременно измен с частотой фазы их колебаний, при этом частоту колебаний в направлении перемещени объекта уменьшают на величину , определ емую выражением .1- г. (А+111 - опережением по Фазе на угол, равный-, .ij(() а частоту встречных ультразвуковых волн увеличивают на величину равную Cti лР. с запаздыванием по фазе o(V) -iL ог/ на угол, равньа -2- {Рд+дР) / где с - скорость распространени ультразвуковых волн в материале несущего органа; - перемещение объекта; FO - начальна частота ультразвуковых колебаний, нап (Л равленных навстречу друг другу; Я - длина волны ультразвуковых колебаний, соответствующа начальной частоте и кратна длине несущего органа.EXCEPTIONS OF ULTRASONIC TONES OF THE CARRYING BODY OF THE VIBRATION CONVEYOR, including the excitation of ultrasonic waves in the supporting organ and changing their frequency of oscillations, characterized in that, in order to improve the accuracy of movement of small objects on the supporting organ, ultrasonic waves have been added to those that have part of the vibration body of the carrier, and have one of the two objects that have their heads and ears above them. the phases of their oscillations, while the frequency of oscillations in the direction of movement of the object is reduced by an amount determined by the expression .1- g. (А + 111 - advancing along the Phase and the angle equal to, .ij (() and the frequency of the opposing ultrasonic waves is increased by an amount equal to Cti.R. with a delay in phase o (V) -iL og / by the angle, equal to -2- {Rd + dR) / where with - propagation speed of ultrasonic waves in the material of the carrier; - movement of the object; FO - initial frequency of ultrasonic oscillations, nap (L opposite to each other; I - wavelength of ultrasonic oscillations corresponding to the initial frequency and a multiple of the length of the carrier.

Description

ОABOUT

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Claims

METHOD FOR EXCITING ULTRASONIC OSCILLATIONS OF A CARRYING BODY OF A VIBRATION CONVEYOR, including excitation of ultrasonic waves in a carrier and changing their vibration frequency, characterized in that, in order to increase the accuracy of movement of small objects on the carrier, ultrasonic waves are directed simultaneously towards each other with the frequency of the phase of their oscillations, while the frequency of oscillations in the direction of movement of the object is reduced by an amount determined by the expression. _r - cb - g · ~ ^with ^{operation by} Phase by an angle equal to ·, Е ²⁵ * ( ^р о ^ύΡ ) and the frequency of the opposing ultrasonic waves is increased by an amount equal to dr '= —— g g with a phase delay of an angle equal to ^2l (E ₀ ^{+ dr |} ) where c is the velocity of propagation of ultrasonic waves in the material of the supporting body; B - movement of the Object; F _o - the initial frequency of ultrasonic vibrations directed towards each other;

- the wavelength of ultrasonic vibrations corresponding to the initial frequency and a multiple of the length of the supporting body.