Magnet ring for magnetic-type coder, magnet ring magnetizing and reading device, and magnetic-type coder
A technology for reading devices and encoders, applied in the field of magnetic encoders, can solve the problems of single output form of rotation angle signals, low detection angle accuracy, complex equipment required for magnetization, etc., so as to avoid measurement errors, improve detection accuracy, and facilitate Handle the effect using
Inactive Publication Date: 2017-12-22
SHANGHAI LINGXIAN ROBOTICS TECH CO LTD
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Problems solved by technology
[0006] One of the objects of the present invention is to provide a magnetic ring of a magnetic encoder, aiming to solve the problem of low detection angle accuracy of the magnetic encoder in the prior art
[0007] Another object of the present invention is to provide a magnetic ring magnetization and reading device that matches the magnetic ring, so as to solve the problem in the prior art that large-area high-precision magnetization requires relatively complex equipment
[0008] Another object of the present invention is to provide a magnetic encoder to solve the problem of single output form of the corner signal in the prior art
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[0027] A magnetic ring of a magnetic encoder, a magnetic ring magnetization and reading device, and a magnetic encoder proposed by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the following description and claims. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.
[0028] Please refer to figure 1 , is a schematic diagram of a magnetic ring 10 of a magnetic encoder provided by an embodiment of the present application, the magnetic ring 10 is a hollow structure 11, the magnetic ring 10 has at least one track, and the track is used to record binary data. In this embodiment, the hollow structure 11 of the magnetic ring 10 is generally for the convenience o...
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The invention provides a magnet ring for a magnetic-type coder, a magnet ring magnetizing and reading device, and the magnetic-type coder. The magnet ring is of a hollow structure, and the magnet ring is provided with at least one magnetic track, wherein the magnetic tracks are used for recording binary data. The magnet ring provided by the invention are provided with the magnetic tracks which are used for recording the binary data for representing a rotating angle, so the magnet ring can effectively avoid a measurement error caused by the change of magnetic flux density when a Hall element is employed in the prior art, and improves the detection precision. The magnet ring magnetizing and reading device can complete the magnetizing operation of all magnetic tracks of the magnet ring, meets the large-area and high-precision magnetizing demands, is lower in cost, and is simple in magnetizing operation. The magnetic-type coder solves a problem that the number of output modes of rotating angle signals of a coder in the prior art is small, and can bring convenience to a robot for carry out the multi-purpose processing of the same rotating angle signal at the same time.
Description
technical field [0001] The invention belongs to the technical field of encoder sections, and relates to a magnetic ring of a magnetic encoder, a magnetizing and reading device for the magnetic ring, and a magnetic encoder. Background technique [0002] Magnetic encoders are used to detect the rotational position of a rotary shaft such as a servo motor. Such a magnetic encoder is disclosed in the patent document (application number CN200780052743.1) in the prior art. In the position detection device described in the patent, a Hall element is used to make it become multi-polar with magnetization. The rotation of the magnetic ring detects the sine wave signal, and the absolute value of the angle is obtained through signal processing. [0003] In this patent application, since the magnetic flux distribution of the magnetic ring is to be detected, the variation of the magnetic flux density caused by the rotational shimmy of the magnetic ring will cause large measurement errors a...
Claims
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IPC IPC(8): G01D5/12
CPCG01D5/12
Inventor 杨庆研
Owner SHANGHAI LINGXIAN ROBOTICS TECH CO LTD