Method, system and electronic device for acquiring position information of resolver

Abstract

The invention provides a position information acquiring method and a position information acquiring system of a rotating transformer, and an electronic device. The position information control method of the rotating transformer comprises the steps that an excitation signal from a hardware decoder is received to generate two orthogonal sinusoidal signals, and the first preset processing of the two orthogonal sinusoidal signals is carried out; the two orthogonal sinusoidal signals after the first preset processing are decoded to acquire the first position data representing the position information of the rotating transformer; second position data representing the position information of the rotating transformer from the hardware decoder is directly received; the acquired first position data and the second position data are analyzed and compared with each other to determine whether the error therebetween is smaller than a preset value; when the answer is yes, the hardware decoder is normal, and the second position data is directly adopted; when the answer is no, the hardware decoder is faulted, and the first position data is adopted. Decoding results are guaranteed to be stable and reliable, and an anti-interference capability is good.

Description

technical field [0001] The invention belongs to the technical field of rotary transformers, and relates to an acquisition method and system, in particular to a rotary transformer position information acquisition method, system and electronic equipment. Background technique [0002] As an angular position sensor, the resolver is widely used in various motion servo control systems, such as household appliances, industrial production processes, and electric vehicles, due to its high reliability and high precision. [0003] Since the signals directly output by the resolver are two orthogonal sinusoidal signals, they cannot be directly used to obtain position information, so the position information needs to be obtained through signal conditioning and calculation. The traditional resolver position acquisition method mainly uses a dedicated decoding chip and signal processing circuit. However, once the chip or decoding circuit fails, the entire system cannot work normally, which r...

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Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method, system and electronic equipment for obtaining position information of a resolver, which are used to solve the problem of once the decoding chip Or if the decoding circuit breaks down, the reliability of the position of the resolver will be reduced. If only software decoding is used, the problem of poor anti-interference will appear

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