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Calibration method and device for magnetic encoder, and magnetic encoder

A magnetic encoder and calibration method technology, applied in the field of magnetic encoders, can solve problems such as reducing the resolution of low encoders, achieve the effect of improving detection accuracy and resolution, and improving stability

Pending Publication Date: 2021-06-25
深圳市昂霸科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The off-axis installation structure measurement overcomes the installation limitation of the on-axis measurement, but the output angle of the ordinary magnetic sensor has an accuracy error greater than 50% when it is installed off-axis, so it c

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  • Calibration method and device for magnetic encoder, and magnetic encoder
  • Calibration method and device for magnetic encoder, and magnetic encoder
  • Calibration method and device for magnetic encoder, and magnetic encoder

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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0020] An embodiment of the present application provides a magnetic encoder, including a magnetic ring, a first sensor and a second sensor, the magnetic ring is set on the output shaft of the motor and follows the rotation of the output shaft; the first sensor and the second sensor are set on the Outside the magnetic ring, the angle between the first sensor and the second sensor is 90°.

[0021] refer to figure 1 As shown, the magnetic ring 10 is installed on the rear end of ...

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Abstract

The invention discloses a calibration method and device for a magnetic encoder and the magnetic encoder. The magnetic encoder comprises a magnetic ring, wherein the magnetic ring is arranged on an output shaft of a motor and rotates along with the output shaft, the outer side of the magnetic ring is provided with a first sensor and a second sensor, and the included angle between the first sensor and the second sensor is 90 degrees. The calibration method comprises the following steps of respectively acquiring detection positions detected by a first sensor and a second sensor and a calibration reference position to be calibrated; performing linear interpolation calibration on the first sensor and the second sensor according to the detection position and the to-be-calibrated reference position; and performing fusion compensation calibration on the detection positions of the first sensor and the second sensor. The magnetic encoder is of a hollow structure and has high accuracy, resolution and stability.

Description

technical field [0001] The invention relates to the technical field of motor encoders, in particular to a calibration method and device for a magnetic encoder and the magnetic encoder. Background technique [0002] Encoder is a new type of angle or displacement measuring device, simple in structure, fast in high-speed rotation, free from oil deposits, dust and structure, non-contact, small in size, low in cost, simple in structure and With high reliability, it is widely used in angle measurement in the fields of industry, military, aviation, navigation and communication. [0003] At present, the magnetic encoder used for absolute angle measurement is generally on-axis measurement, which requires the encoder to be installed on the shaft end face of the measured rotating shaft. The advantage of this is that the magnetic field generated by the magnet is evenly distributed at the magnetic sensor, and the magnetic sensor angle output The relationship with the actual mechanical a...

Claims

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Application Information

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IPC IPC(8): G01D18/00G01D5/14
CPCG01D18/00G01D5/142
Inventor 张缙锋邓世韬
Owner 深圳市昂霸科技有限公司