Angle detection device

A technology of angle detection and equipment, applied in the field of detection, can solve the problems of many leads, complex and large circuit structure, and low reliability

Active Publication Date: 2017-08-18
苏州昱泽智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the resolvers are basically six-wire resolvers. Among the 6 leads, 2 are excitation leads and 4 are signal leads. There are many leads, the system maintenance is cumbersome, and the reliability is not high.
At present, signal processing devices are equipped for such 6-lead rotary transformers. The circuit configuration of these signal processing devices is complicated and huge, and it is not suitable as a signal processing device for inductive (especially four-wire) rotary transformers.

Method used

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Examples

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Effect test

no. 1 example

[0047] In this embodiment, the angle detection device includes a resolver and a signal processing device. In this embodiment, the excitation signal output by the excitation circuit in the signal processing device is a sine wave signal (in the present invention, it may also be a rectangular wave signal).

[0048] In the resolver, P=1, Q=6, so the number of detected teeth of the stator of the resolver is 4, and the number of salient poles of the rotor is 6. figure 2 It is a schematic cross-sectional view of the stator and rotor of the resolver. The stator includes a stator yoke and stator detection teeth, and the stator detection teeth are arranged on the stator yoke. The rotor includes a rotor core. Both the stator core and the rotor core are formed by stamping silicon steel sheets.

[0049] In this embodiment, six rotor salient poles are evenly distributed on the surface circumference of the rotor core, and four stator detection teeth are distributed along the circumferenc...

no. 2 example

[0092] In this embodiment, the angle detection device includes a rotary transformer and a signal processing device connected thereto, wherein the rotary transformer is the same as that in the first embodiment. In this embodiment, the excitation signal output by the excitation circuit in the signal processing device is a sine wave signal (in the present invention, it may also be a rectangular wave signal).

[0093] Figure 6 Shown is a schematic structural diagram of the signal processing device in this embodiment. In this embodiment, the signal processing device includes an excitation circuit, a band-pass filter, a signal acquisition circuit, a time control circuit and an angle calculation circuit.

[0094] The excitation signal output by the excitation circuit is connected to the excitation terminals A and B of the resolver, and the feedback signal terminals C and D of the resolver are connected to the input end of the band-pass filter of the signal processing device. The o...

no. 3 example

[0098] In this embodiment, the angle detection device includes a resolver and a signal processing device connected thereto, wherein the resolver is the same as the resolver in the first embodiment and the second embodiment. In this embodiment, the excitation signal output by the excitation circuit in the signal processing device is a sine wave signal (in the present invention, it may also be a rectangular wave signal).

[0099] Figure 7 Shown is a schematic structural diagram of the signal processing device in this embodiment. In this embodiment, the signal processing device includes an excitation circuit, a band-pass filter, a signal acquisition circuit, a time control circuit, a low-pass filter and an angle calculation circuit.

[0100] The output excitation signal of the excitation circuit is connected to the excitation terminals A and B of the resolver, the feedback signal terminals C and D of the resolver are connected to the input end of the band-pass filter of the sig...

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PUM

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Abstract

The present invention belongs to an angle detection device, belonging to the detection technology field. The angle detection device comprises a rotary transformer and a signal processing device. The rotary transformer comprises at least four leads, where at least two of the leads are excitation leads, and at least two of the leads are signal leads. The signal processing device comprises: an excitation circuit configured to connect with the excitation leads and provide excitation signals for the excitation leads; a signal collection circuit configured to control the signal leads and collect position signals of the rotary transformer from the signal leads; and an angle calculation circuit configured to connect the signal collection circuit and calculate the rotation angle of the rotary transformer according to the position signals emitted by the signal collection circuit. The angle detection device can provide an efficient signal processing technology for an inductance rotary transformer, especially to an inductance rotary transformer having four leads consisting of two excitation leads and two signal leads to obtain accurate rotation angle of the rotary transformer.

Description

technical field [0001] The invention belongs to the technical field of detection, and relates to a detection device, in particular to an angle detection device. Background technique [0002] Industries such as electric vehicles, industrial automation, robotics, textile machinery and aerospace all rely on high-performance control of rotating electrical machines, requiring motor rotation angle sensors and often requiring them to be used in high-temperature environments. Currently, photoelectric angle encoders are widely used because they can easily detect the rotation angle of motors. However, this kind of photoelectric angle encoder contains photoelectric components and semiconductor devices, so it cannot be used in high temperature environments. A resolver is a sensor that can detect rotation angles. Since it does not use a photoelectric conversion device, it can be used in a higher temperature environment. [0003] At present, the resolvers are basically six-wire resolvers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/30
CPCG01B7/30Y02T10/64
Inventor 高翔
Owner 苏州昱泽智能科技有限公司
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