Electric motor

A motor and motor shaft technology, applied in the field of motors, can solve the problems of waste, complex structure and positioning and assembly, weak anti-vibration and impact ability, etc., and achieve the effects of improving cost performance, low cost and simple production.

Inactive Publication Date: 2010-11-03
HANGZHOU SES MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the photoelectric encoder has some insurmountable shortcomings: the photoelectric encoder is made of glass material through the engraved line, its anti-vibration and impact ability is not strong, it is not suitable for harsh environments such as dust and condensation, and its structure, positioning and assembly are complicated
Task 2 requires a small load and moderate speed, so the motor selected in Task 1 is no longer suitable for the working conditions of Task 2, and the motor needs to be selected, which will inevitably cause waste

Method used

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Embodiment 1

[0092] Embodiment 1 of the present invention provides a position detection device in which the first column of magnetic induction elements is provided with two magnetic induction elements 308 and the second column of magnetic induction elements is provided with three magnetic induction elements 309 .

[0093] Figure 9 It is a structural diagram of the first magnetic steel ring, the magnetic permeable ring and the magnetic induction element in Embodiment 1 of the present invention; Figure 10 It is a diagram showing the magnetization sequence of the first magnetic steel ring and the positional relationship with the magnetic induction element in Embodiment 1 of the present invention. There are 2 magnetic induction elements 308 in the first column corresponding to the first magnetic steel ring 302, i.e. m=2, with H 1 and H 2 Indicates that the two magnetic sensing elements H 1 and H 2 They are respectively placed in the two gaps corresponding to the magnetic permeable ring 3...

Embodiment 2

[0113] The second embodiment of the present invention provides a schematic diagram of four magnetic induction elements corresponding to the first magnetic steel ring 302 .

[0114] Figure 14 It is a structural schematic diagram of the first magnetic steel ring Hall element, the magnetic permeable ring, and the magnetic induction element in the position detection device of Embodiment 2 of the present invention; Figure 15 It is a diagram of the magnetization sequence of the first magnetic steel ring and the position relationship with the magnetic induction element in the second embodiment of the present invention.

[0115] Such as Figure 14 As shown, there are 4 magnetic induction elements 308 corresponding to the first column of the first magnetic steel ring 302, that is, m=4, and H 1 、H 2 、H 3 and H 4 Indicates that the two magnetic sensing elements H 1 、H 2 、H 3 and H 4 They are respectively placed in the four gaps corresponding to the first magnetic permeable rin...

Embodiment 3

[0119] The third embodiment of the present invention provides a structural diagram in which three magnetic induction elements are provided corresponding to the first magnetic steel ring.

[0120] Figure 17 It is a structural schematic diagram of the first magnetic steel ring Hall element, the magnetic permeable ring, and the magnetic induction element of Embodiment 3 of the present invention; Figure 18 It is the magnetization magnetic sequence of the first magnetic steel ring and the position relationship diagram with the magnetic induction element in the embodiment 3 of the present invention;

[0121] Such as Figure 17 As shown, there are three magnetic induction elements 308 corresponding to the first magnetic steel ring 302 in the first column, that is, m=3, and H 1 、H 2 and H 3 Indicates that the two magnetic sensing elements H 1 、H 2 and H 3 They are respectively placed in the three gaps corresponding to the first magnetic permeable ring 304 . The second row of...

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PUM

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Abstract

The invention discloses a motor, comprising a body, a controller and a magnetoelectric sensor, wherein the magnetoelectric sensor is used for sensing rotation of a motor shaft, transmitting the sensed voltage signal to the controller, obtaining the rotation angle or position of the motor shaft through processing of the controller and further realizing precise control of the motor; the number of the magnetic poles of the magnetic steel related in the magnetoelectric sensor used by the motor is irrelevant to the number of the magnetic poles of an electric rotor, thus ensuring flexible matching between the motor and the magnetoelectric sensor. As the motor adopts the sensor of such a structure, the control precision, the system response speed and the reliability of the motor are greatly improved and the production cost of the motor is simultaneously lowered, thus improving the cost performance of the motor in the invention.

Description

technical field [0001] The invention relates to an electric motor, especially a control electric motor for precise position control. Background technique [0002] The electric motor is a very widely used power source in the industrial field, and the control of the electric motor will directly affect the operation of the whole system. Therefore, the control system of the electric motor has also been widely concerned. [0003] There are many types of motors. According to different classification standards, motors can be divided into asynchronous motors, synchronous motors; AC motors, DC motors, etc. In some existing systems, it is necessary to precisely control the position and speed of the motor, so a servo motor appears. The motor is combined with a controller and an encoder to realize closed-loop control of the motor. Because of its high response characteristics and wide speed range, it has attracted wide attention in industrial and agricultural production. The accuracy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K29/08H02K1/27H02K1/12H02K11/00H02P6/16
CPCH02K29/08H02P6/16
Inventor 郝双晖郝明晖
Owner HANGZHOU SES MACHINERY
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