Parameter acquisition method based on rotational variable sensor

A resolver sensor and numerical technology, which is applied in the field of data processing, can solve the problems of inability to realize open-circuit and short-circuit detection of sensors, and high working environment requirements, so as to reduce the requirements of environmental use conditions, improve safety performance, and ensure the effect of measurement accuracy.

Active Publication Date: 2019-06-14
BEIJING ZHIXINGZHE TECH CO LTD
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  • Abstract
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a parameter acquisition method based on a resolver sensor to solve the problem that the wheel speedometer in the existing calculation has high requirements on the working environment and cannot realize the open circuit and short circuit detection of the sensor

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  • Parameter acquisition method based on rotational variable sensor
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  • Parameter acquisition method based on rotational variable sensor

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Embodiment Construction

[0033] The application 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 related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0034] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0035] figure 1 It is a schematic flow chart of the positioning method provided by Embodiment 1 of the present invention. The method is applied in vehicles, especially in low-speed automatic driving vehicles. Such as figure 1 As shown, the method includes the following st...

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Abstract

The invention provides a parameter acquisition method based on a rotational variable sensor, which comprises the following steps: the rotational variable sensor acquires angular displacement and angular velocity change of a wheel, and generates a rotation voltage signal according to the angular displacement and the angular velocity change; a decoder receives the rotation voltage signal output by the rotational variable sensor and processes the rotation voltage signal to generate an electric angle value; a processor receives the electric angle value sent by the decoder and processes the electric angle value to generate the mechanical radian of the wheel and the angular speed of the wheel. Therefore, the measurement precision is ensured, the requirement on environmental use conditions is reduced; meanwhile, the open circuit state and the short circuit state of the rotational variable sensor can be detected, and the safety performance of automatic driving is improved.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a parameter acquisition method based on a resolver sensor. Background technique [0002] Since the low-speed self-driving vehicle is running, it needs a means of auxiliary positioning. At present, the auxiliary positioning is realized through the wheel speed difference. Therefore, a wheel speedometer with relatively high accuracy is required. [0003] Many low-speed vehicles now use photoelectric sensors for wheel speed measurement. The photoelectric sensor measures the rotation angle of the wheel in the form of a grating, and outputs two-image PWM wave signals. The controller detects the frequency of PWM to obtain the rotational speed of the wheel. [0004] The wheel speedometer realized by photoelectric sensor has high requirements on the working environment, and generally cannot meet the waterproof level requirements. In addition, the photoelectric sensor method i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W40/10B60W50/00
Inventor 黄踔霍舒豪张德兆王肖李晓飞张放
Owner BEIJING ZHIXINGZHE TECH CO LTD
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