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A minimalist form spwm digital generation system and method based on pulse sampling

A technology for generating systems and algorithms, applied in digital function generators, electrical digital data processing, digital data processing components, etc., can solve problems such as high power consumption and large analog circuit size

Inactive Publication Date: 2021-06-08
WUHAN UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a pulse-sampling-based extremely Simplified form SPWM digital generation system and method

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  • A minimalist form spwm digital generation system and method based on pulse sampling
  • A minimalist form spwm digital generation system and method based on pulse sampling
  • A minimalist form spwm digital generation system and method based on pulse sampling

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] The minimalist SPWM digital generation system based on pulse sampling in the embodiment of the present invention, the system realizes the SPWM wave generation algorithm based on the pulse sampling point through the software control process of the DSP hardware platform, and the algorithm adopts the sampling with the same frequency as the SPWM wave The pulse samples the analog signal, calculates the duty ratio of the SPWM wave based on the current sampling value, and realizes the generation of the SPWM wave.

[0036] What the DSP in the embodiment of the present invention adopts is TMS320C6748...

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Abstract

The invention discloses a minimalist SPWM digital generation system and method based on pulse sampling. The system realizes the SPWM wave generation algorithm based on pulse sampling points through the software control process of the DSP hardware platform. The algorithm uses the same method as the SPWM wave The frequency sampling pulse samples the analog signal, calculates the SPWM wave duty cycle based on the current sampling value, and realizes the generation of the SPWM wave. The present invention improves on the basis of the existing SPWM generation principle. On the premise of ensuring that the SPWM information is not seriously lost, a minimalist SPWM wave generation system based on pulse sampling, with DSP as the core circuit composition is simple and easy to operate. , to reduce the circuit area to meet the needs of miniature power transmitters.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to a system and method for generating SPWM numbers in a simplified form based on pulse sampling. Background technique [0002] The classic SPWM waveform realization system generally adopts the method of comparing a sine wave with a triangular carrier. According to different comparison methods, it is divided into three types: natural sampling method, symmetrical regular sampling method, and asymmetric regular sampling method. These methods all need to generate triangular carrier waves and comparators, which increases the area of ​​the analog circuit part. The development trend of low power consumption and small size of underwater communication electronic equipment requires us to minimize the area of ​​the circuit board under the premise of satisfying the design function when designing the circuit, especially in the deep water environment, where it is difficult to re...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F1/025G06F1/02H03K7/08
CPCG06F1/022G06F1/025H03K7/08
Inventor 江鹏韩震张宇
Owner WUHAN UNIV
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