Non-contact annular magnetoelectric rotary encoder

Abstract

The invention discloses a sensor, and particularly relates to a non-contact annular magnetoelectric rotary encoder. The encoder comprises an annular encoder main body I, and an acquisition head II which is arranged correspondingly to the annular encoder body I, wherein a clearance is formed between the annular encoder main body I and the acquisition head II, the annular encoder main body I comprises a bearing ring body, a magnetic ring stuck and sleeved on the upper edge part of the bearing body, and a protecting cover arranged outside the bearing ring body and the magnetic ring and playing a role of protecting the magnetic ring; and a magnetic induction chip is arranged in the acquisition head II. The magnetoelectric principle is adopted by the encoder; the defects of easiness in cracking of a code disc, high requirement on precision, complex mechanical structure, complex mounting and adjusting process and the like of the traditional photoelectric encoder are overcome; the generation, the receiving and the processing of a signal are realized by selecting and using a magnetoelectric integrated chip; the complex debugging process of the traditional photoelectric encoder is omitted; the production efficiency and the performance of products are greatly improved; and the non-contact annular magnetoelectric rotary encoder which is small in size, high in reliability, resistant in vibration, high in frequency response, low in cost, high in precision, low in error and long in service life is provided.

Description

technical field [0001] The invention discloses a sensor, specifically a non-contact circular magnetoelectric rotary encoder, which can be widely used in numerical control machine tools, elevator industry, navigation, automation, aviation, motor control and industrial automation, etc. field. Background technique [0002] An encoder is a rotary sensor that converts angular displacement into a series of digital pulses. Its basic structure is composed of a light-emitting device, a code disc, a slit, and a receiving element. When the encoder shaft drives the code disc to rotate, the light emitted by the light-emitting element is cut into intermittent light by the code disc and the slit and received by the receiving element to generate an initial signal. After the signal is processed by the subsequent circuit, it outputs a signal. The accuracy of a rotary encoder depends on mechanical and electrical factors such as disc eccentricity, bearing eccentricity, and inaccuracies in the...

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Problems solved by technology

[0003] The purpose of the present invention is to adopt the principle of magnetoelectricity to solve the shortcomings of traditional photoelectric encoders such as fragile code discs, high precision requirements, complex mechanical structures, and cumbersome assembly and adjustment processes, and select magnetoelectric integrated chips to realize signal generation, reception and processing, saving Eliminate the complicated debugging process of the traditional photoelectric type, greatly improve the production efficiency and product performance, and provide a non-contact sensor with miniaturization, high reliability, vibration resistance, high frequency response, low cost, high precision, small error and long life. Ring Magnetic Rotary Encoder

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