Position detecting device and signal processing device and method thereof

A signal processing device and detection device technology, applied in the field of sensors, can solve the problems of weak impact resistance, limited scope of application, high processing cost, etc., and achieve the effects of simple manufacturing process, reduced effective area, and low cost
CN101876558AInactive Publication Date: 2010-11-03HANGZHOU SES MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HANGZHOU SES MACHINERY
Publication Date
2010-11-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a position detecting device and a signal processing device and method thereof. The position detecting device comprises a rotor and a stator covering the rotor inside, wherein the rotor comprises a first magnetic steel ring and a second magnetic steel ring which are fixed on a rotation axis; n-numbered magnetic induction elements which are uniformly distributed and correspond to the second magnetic steel ring, and m-numbered magnetic induction elements which are distributed at a certain angle and correspond to the first magnetic steel ring are arranged on the stator; and when the rotor carries out rotational motion relative to the stator, the magnetic induction elements convert the sensed magnetic signals into voltage signals and output the voltage signals to the signal processing device. In the invention, the magnetic induction elements fixed on the circumference of the stator are utilized to induce magnetic filed intensity variation caused by rotation of the magnetic steel fixed on the axis to output the voltage signals, and the voltage value is used for judging the rotation angle of the axis, thus realizing position detection. The invention has the advantages of quick response, high processing precision, low cost, simple manufacturing process, etc.
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Description

technical field

[0001] The invention relates to a sensor, in particular to a position detection device for precise position control and a signal processing device and method thereof. Background technique

[0002] In industrial control, in order to achieve precise motor position, a position sensor is used to convert physical quantities such as the rotation angle and angular velocity of the motor into electrical signals. This type of position sensor is usually called an encoder. With the development of industrial automation, the transformation of DC motors to AC motors and the transformation of analog control to digital control are inseparable from the development of encoders. The manufacturing technology and signal processing level of encoders directly affect the level of automation.

[0003] At present, the encoders used in the field of engineering technology are mainly photoelectric encoders, and there are two types of photoelectric encoders: incremental and absolute. In a...

Claims

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