Rotary transformer state detection method and device, digital signal processing chip and medium

A digital signal processing and state detection technology, applied in the field of resolver, can solve problems such as insufficient accuracy, abnormal state, poor cable contact, etc., to achieve the effect of ensuring smooth operation and improving accuracy

Pending Publication Date: 2020-12-11
SHENZHEN INOVANCE TECH
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Problems solved by technology

However, in the abnormal situation where only one line of the resolver is broken, the cable is in poor contact, and the electromagnetic interference is strong, the level signal may be a normal high level, but the resolver is actually in an abnormal state
Therefore, the accuracy of the method of detecting the state of the resolver through the level signal is not high enough

Method used

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  • Rotary transformer state detection method and device, digital signal processing chip and medium
  • Rotary transformer state detection method and device, digital signal processing chip and medium
  • Rotary transformer state detection method and device, digital signal processing chip and medium

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Embodiment Construction

[0037] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] refer to figure 1 , figure 1 It is a schematic diagram of the hardware structure of the digital signal processing chip involved in each embodiment of the present invention. In the embodiment of the present invention, the digital signal processing chip may include a resolver, a processor 1001 (such as a central processing unit, CPU), a communication bus 1002, an input port 1003, an output port 1004, and a memory 1005. Wherein, the communication bus 1002 is used to realize the connection and communication between these components; the input port 1003 is used for data input; the output port 1004 is used for data output, and the memory 1005 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk storage, and the storage 1005 may also optionally be a storage device independent of th...

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Abstract

The invention discloses a rotary transformer state detection method and device, a digital signal processing chip and a medium. The method comprises the following steps: acquiring a current rotation angle fed back by a resolver; calculating a rotation angle difference value between the current rotation angle and a previous rotation angle, and comparing the rotation angle difference value with a difference value threshold value; and if the rotation angle difference is greater than the difference threshold, judging that the rotary transformer is in an abnormal state, and feeding back and correcting the rotation angle according to an abnormal hopping mechanism. Therefore, the current state of the rotary transformer is judged based on the rotation angle, and the rotation angle is fed back and corrected according to the abnormal jump mechanism when the rotary transformer is in the abnormal state, so that the accuracy of rotary transformer state detection is improved, and the stable operationof wind power variable pitch is ensured.

Description

technical field [0001] The invention relates to the field of resolver technology, in particular to a resolver state detection method, device, digital signal processing chip and medium. Background technique [0002] Most of the existing wind power pitch drives use a resolver (Switching Virtual Circuit, resolver) as the encoder for the position feedback of the permanent magnet synchronous motor. Ye Shun returned to a safe position. [0003] At present, the state of the resolver is generally detected through the level signal of the resolver hardware. If the level signal is abnormal, it means that the resolver is abnormal. However, in the abnormal situation where only one wire of the resolver is broken, the cable is in poor contact, and the electromagnetic interference is strong, the level signal may be a normal high level, but the resolver is actually in an abnormal state. Therefore, the accuracy of the method of detecting the state of the resolver through the level signal is...

Claims

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Application Information

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IPC IPC(8): G01D5/244
CPCG01D5/2448G01D5/24466Y02E10/72
Inventor 王玉凯
Owner SHENZHEN INOVANCE TECH
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