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Rotor position sensor

A technology of rotor position and sensor, applied in the direction of electromechanical devices, electrical components, structural connections, etc., can solve the problems of many winding turns, high process cost, low efficiency, etc., and achieve the effect of improving winding efficiency and optimizing layout.

Inactive Publication Date: 2018-12-28
宁波德昌科技有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

In this technical solution, there are two problems to be optimized: first, the coil on the inductance element unit is composed of multiple sets of excitation coils and multiple sets of output coils, and the winding sequence is different, the winding process is complicated, and the process cost High; Second, multiple groups of coils are wound separately, the number of winding turns is large, the process is cumbersome, the time is long and the efficiency is low

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] like figure 1 , figure 2 The illustrated embodiment is a rotor position sensor. The rotor position sensor in this example includes a circular first winding support 1 and a second winding support 2, the first winding support is located at the top, and the second support is located at the bottom, both of which can be positioned along the axial direction inversion. An annular fixed iron core 3 is fixed between the first winding support and the second winding support. The fixed iron core ring is provided with a magnetically conductive toothed disc 11, and the magnetically conductive toothed disc will be fixed on the motor shaft and rotate synchronously with the rotation of the motor shaft. A number of inductance element units 4 are radially embedded on the fixed iron core, 16 in this example, and the angle between two adjacent inductanc...

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Abstract

A rotor position sensor includes an axially aligned first winding support and second winding support, an annular fixed core is fixed between the first winding support and the second winding support, the fixed iron core ring is provided with a magnetically conductive toothed disk capable of synchronously rotating with the rotating shaft, a plurality of inductive element units are radially embeddedon the fixed iron core, an excitation coil and an output coil are wound on the inductive element unit, and the excitation coil and the output coil are arranged in a gap in the axial direction of the inductive element unit. The invention has the advantages that the layout of the coils on the inductance element unit can be optimized and the winding efficiency can be improved.

Description

technical field [0001] The invention relates to the field of motors, in particular to a rotor position sensor. Background technique [0002] For a brushed motor, after the carbon brush is worn out, not only the carbon brush needs to be replaced, but also the accessories around the motor such as the gears need to be replaced, so the service life is short and frequent maintenance is required. The brushless motor is composed of a motor body and an electronic driver. The driver is used to replace the mechanical commutation of the brushed motor, which has high reliability, long working life, and does not require frequent maintenance. The commutation process of the phase windings of the brushless motor is accomplished by means of position sensors and power switches of the electronic inverter. The function of the rotor position sensor is to detect the relative position of the rotor magnetic field axis and the stator phase winding axis, determine the on / off state of the public rate...

Claims

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Application Information

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IPC IPC(8): H02K11/21H02K29/06
CPCH02K11/21H02K29/06
Inventor 狄伟高彩彪
Owner 宁波德昌科技有限公司
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