Linear position-displacement magnetostrictive transducer having multiple cylindrical electromagnets for generating flux,
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01B-007/14
H04R-015/00
출원번호
US-0407357
(1989-09-14)
발명자
/ 주소
Williams Jack (510 N. Yakima Tacoma WA 98403)
인용정보
피인용 횟수 :
8인용 특허 :
5
초록▼
When observing or setting changeable positions of respective movable components of a machine, such as movable saws of a multiple cut sawing machine, each linear position-displacement transducer used has the wave guide housing thereof, made of sufficient length to receive, instead of one permanent ma
When observing or setting changeable positions of respective movable components of a machine, such as movable saws of a multiple cut sawing machine, each linear position-displacement transducer used has the wave guide housing thereof, made of sufficient length to receive, instead of one permanent magnet, several overall cylindrical electromagnets serving as flux generators. Each electromagnet: has a centered hole, to permit the movement thereof along the wave guide; and has four electromagnets equally radially spaced in a radial plane, with their commonly positioned north poles, forming an overall central north pole, surrounding the center hole, which is formed by a non ferrous tube, and with their radially spaced south poles being adjacent to an encircling soft iron band. This band serves as a 360 degree target for flux radiating from the overall central north pole, and as a heat sink, thereby strengthening and enhancing the radiation signal pattern bombarding the wave guide housing, when the overall cylindrical electromagnet is being energized to serve in determining the location of the machinery component to which it is attached.
대표청구항▼
A cylindrical electromagnet movable, along with other like cylindrical electromagnets, relative to a wave guide housing of a linear position-displacement transducer, and connectable to a movable member of an overall assembly, to receive electrical energy at selected times to generate flux used in de
A cylindrical electromagnet movable, along with other like cylindrical electromagnets, relative to a wave guide housing of a linear position-displacement transducer, and connectable to a movable member of an overall assembly, to receive electrical energy at selected times to generate flux used in determining the position of the movable member thereof, while the other like cylindrical electromagnets are not receiving electrical energy, thereby alternatively utilizing the linear position-displacement transducer to function with several cylindrical electromagnets to determine the relative positions of other movable members of an overall assembly, comprising: (a) four individual electromagnets equally radially spaced in a radial plane, with their almost commonly positioned north poles, forming an overall central north pole of the overall cylindrical electromagnet; (b) a centered non-ferrous tube to accommodate a wave guide, and positioned between all the north poles of the four individual electromagnets; (c) an encircling soft iron band positioned adjacent to the four individual electromagnets, at the south poles thereof, to serve as a 360 degree target for flux radiating from the overall central north pole, thereby strengthening and enhancing a radiation signal pattern bombarding the wave guide housing, when the overall cylindrical electromagnet is being energized to serve in determining the location of the movable member of an overall assembly to which it has been connected, and also while the linear position-displacement transducer is likewise being energized; (d) non conductive covers interfitting with the encircling soft iron band and the centered non ferrous tube to form a housing about the four individual electromagnets; and (e) circuitry for receiving electrical energy and distributing this electrical energy to the four individual electromagnets.
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이 특허에 인용된 특허 (5)
Ueda Toshitsugu (Musashino JPX) Ra Seiki (Musashino JPX) Noguchi Masanori (Musashino JPX), Displaced position detecting device.
Cullum ; Jr. Clifton D. (Putnam Valley NY) Thompson David A. (South Salem NY) Worthington Thomas K. (Tarrytown NY), Magnetoacoustic position sensor employing pulse code sequence generators and detectors.
Kitaura Wataru (Hitachi JPX) Ito Tetsuo (Hitachi JPX), Method and apparatus for detecting the position of a movable object utilizing the magnetostrictive effect to generate ul.
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