10 Magnetic Encoder Manufacturers in 2023
This section provides an overview for magnetic encoders as well as their applications and principles. Also, please take a look at the list of 10 magnetic encoder manufacturers and their company rankings.
Table of Contents
What Is a Magnetic Encoder?
An encoder is a position sensor that detects physical quantities, such as the amount of linear shaft movement and angle of rotation, and outputs position information as an electrical signal.
There are two types of encoders: linear encoders that detect the amount of linear movement and rotary encoders that measure the amount of rotation. Rotary encoders, which have a wide range of applications when combined with motors, are by far the most commonly used.
A magnetic encoder is a type of encoder that uses a magnetic sensor to detect changes in magnetic field distribution as a method of detecting physical quantities.
Uses of Magnetic Encoders
Encoders are widely applied in the field of industrial equipment, etc. Magnetic encoders are particularly resistant to oil, water, dust, and other contaminants. They also have excellent heat, vibration, and shock resistance, making them suitable for use in harsh environments. Specifically, they are used for machine tools and industrial equipment in dusty environments or in factories where water and cutting oil are splashed around.
In addition, since magnetic encoders do not require a disk with slits as optical encoders do, they can achieve the same level of resolution in a smaller size and have fewer parts and lower power consumption compared to optical encoders.
Principle of Magnetic Encoders
Magnetic encoders consist of magnetic sensor such as a Hall element or MR element and a permanent magnet.
The permanent magnet is attached to a rotating or moving object. When the position of the permanent magnet changes, such as when the shaft rotates, the magnetic field distribution changes and the magnetic flux density applied to the magnetic sensor changes. The magnetic sensor converts this change in magnetic flux density into an electrical signal and outputs the position information of the shaft.
Hall elements or MR elements are used as magnetic sensors. A Hall element is a sensor that detects magnetism using the Hall effect, in which a voltage corresponding to the magnetic flux density and direction is generated when an electric current is applied to a semiconductor thin film. An MR element, also called a magnetoresistive element, detects magnetism using the magnetoresistive effect, in which the electrical resistance value changes depending on the strength of the magnetic field.
There are two types of encoder output methods: incremental, which outputs the angle relative to the starting position, and absolute, which outputs the angle as an absolute value. Magnetic encoders are characterized because the sine wave of the voltage waveform corresponds to the absolute angle, making it easier to output the absolute method than the optical method.
List of 10 Magnetic Encoder Manufacturers
*Including some distributors, etc.
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Sai Services.
Magnetic Sensors
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Magnetic Encoder Manufacturer Ranking
*Including some distributors, etc.Ranking as of April 2023 Globally
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Asahi Kasei Microdevices Corporation | 100% |
Derivation Method
The ranking is calculated based on the click share within the magnetic encoder page as of April 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
- Asahi Kasei Microdevices Corporation: 39,283
Newly Established Company
- Sai Services.: 2010 (13 years ago)
- Suzhou SDK Electronics Technology Co., Ltd.: 2007 (16 years ago)
- Phoenix America LLC.: 2000 (23 years ago)
Company with a History
- Asahi Kasei Microdevices Corporation: 1980 (43 years ago)
- RLS Merilna tehnika d.o.o.: 1989 (34 years ago)
- Innovative Automation Product: 1997 (26 years ago)
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