Sine and cosine signal processing method, device and system and sine and cosine encoder
A signal processing device and signal processing technology, applied in the field of signal processing, can solve the problem that the output signal of a low-resolution sine-cosine encoder cannot meet the requirements of elevator working conditions, and achieve the purpose and advantages of being concise and easy to understand, and improving the resolution.
Pending Publication Date: 2022-01-11
浙江西子富沃德电机有限公司
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[0004] In this embodiment, a sine-cosine signal processing method, device, system and sine-cosine encoder are provided to solve the problem in the related art that the output signal of the low-resolution sine-cosine encoder cannot meet the requirements of the elevator working conditions
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[0052] In order to understand the purpose, technical solution and advantages of the present application more clearly, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments.
[0053]Unless otherwise defined, the technical terms or scientific terms involved in the application shall have the general meanings understood by those skilled in the technical field to which the application belongs. In this application, words like "a", "an", "an", "the", "these" and the like do not denote quantitative limitations, and they may be singular or plural. The terms "comprising", "comprising", "having" and any variants thereof referred to in this application are intended to cover non-exclusive inclusion; for example, processes, methods and The system, product or device is not limited to the steps or modules (units) listed, but may include steps or modules (units) not listed, or may include other steps or modules inherent to the ...
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The invention relates to a sine and cosine signal processing method, device and system and a sine and cosine encoder, and the sine and cosine signal processing method comprises the steps of: acquiring a sine and cosine analog signal, and carrying out the A / D conversion of the sine and cosine analog signal to obtain a to-be-processed sine and cosine digital signal; performing low-pass filtering on the sine and cosine digital signal to obtain a sine and cosine filtering signal; performing frequency multiplication calculation on the sine and cosine filtering signal according to a preset frequency multiplication algorithm to obtain a sine and cosine frequency multiplication signal; tracking and locking the sine and cosine frequency multiplication signal to obtain a sine and cosine setting frequency multiplication signal; and performing D / A conversion on the sine and cosine setting frequency multiplication signal to obtain a sine and cosine frequency multiplication analog signal. The frequency multiplication processing of the sine and cosine analog signal is realized under the condition that the hardware cost is not increased, and then the sine and cosine signal output by the sine and cosine encoder can be processed into the sine and cosine frequency multiplication signal meeting the working condition requirements of an elevator, so that the resolution ratio of the output signal of the sine and cosine encoder is improved.
Description
technical field [0001] The present application relates to the field of signal processing, in particular to a sin-cos signal processing method, device, system and a sin-cos encoder. Background technique [0002] At present, the elevator industry mainly uses sine-cosine encoders as position detection devices. The resolution of the sine-cosine encoder has an important influence on the safety of the elevator operation. For elevators without load cells, low-resolution sine-cosine encoders, such as 256-line and 512-line sine-cosine encoders, will cause problems such as poor comfort when the elevator starts and large errors in motor angle detection. Therefore, the sine-cosine signal output by the low-resolution sine-cosine encoder cannot meet the working condition requirements of the elevator. In addition, due to the limited space of the traction machine that the sin-cos encoder can use, the hardware transformation of the sin-cos encoder itself to improve the resolution of the si...
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CPCG01D5/244
Inventor 沈立陈坤
Owner 浙江西子富沃德电机有限公司