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Rotating speed detection method and device facilitating the closed-loop control

A speed detection and closed-loop control technology, which is applied in the direction of measuring devices, variable measurement arrangements, linear/angular velocity measurement, etc., can solve the problems of speed value jumps, unfavorable speed closed-loop control, etc., and achieve the effect of solving speed mutations

Inactive Publication Date: 2018-09-04
株洲华越轨道科技有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The defect of the prior art is that both the "T detection method" at low speed and the "M detection method" at high speed can obtain better rotational speed detection value, but at the rotational speed between low speed and high speed, it will There is a change in the detection method from "T detection method" to "M detection method" or from "M detection method" to "T detection method"
Due to the different calculation methods of the two detection methods, there will be jumps in the speed value, which is not conducive to the closed-loop control of the speed

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] In order to solve the above technical problems, the present invention provides a rotational speed detection method that is beneficial to closed-loop control, and introduces weighting coefficients to perform weighted combination of detection results of different detection methods during the rotational speed detection process. Specifically, the weighting coefficient is determined by the measured real-time rotational speed.

[0025] The weighting coeffic...

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Abstract

The invention discloses a rotating speed detection method and device facilitating the closed-loop control. Detection results of different detection modes are weighted and merged in a rotating speed detection process, and the increase rate and decrease rate of a detected rotating speed are limited, thereby solving a problem of speed abrupt changes during the high-speed to low-speed detection or low-speed to high-speed detection. The method and device are simple in operation, and are high in accuracy.

Description

technical field [0001] The invention relates to the technical field of vehicle speed detection, in particular to a method and device for detecting a rotational speed beneficial to closed-loop control. Background technique [0002] In industrial control, transportation and other fields, the speed closed-loop control can be greatly used. In order to achieve a stable closed-loop control of the rotational speed, a good rotational speed value must be detected, because the detected rotational speed value is not ideal, which may cause the closed-loop control to fail. At the same time, due to cost considerations, many occasions use low-resolution speed sensors. [0003] When using a low-resolution speed sensor for speed detection, different detection methods are adopted for low-speed and high-speed sensors. Because the low-resolution speed sensor does not output many pulses per revolution, when the speed is low, the period T between the measurement pulses is used to convert the sp...

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Application Information

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IPC IPC(8): G01P3/481G01D1/16
CPCG01P3/481G01D1/16
Inventor 胡长贵谢升航
Owner 株洲华越轨道科技有限公司