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A Method for Matching the Voltage and Rotational Speed ​​of an Automobile Sunroof DC Motor

A technology of DC motor and matching method, which is applied in the direction of DC motor speed/torque control, electrical components, control system, etc., to achieve the effects of good data consistency, simplified design, and reduced chance of false pinch prevention

Active Publication Date: 2019-02-19
WUHU MOTIONTEC AUTOMOTIVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for matching the voltage and rotation speed of the sunroof DC motor, which solves the situation of accidental pinch prevention caused by voltage fluctuations or failure to prevent pinch when encountering obstacles during the operation of the sunroof.

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  • A Method for Matching the Voltage and Rotational Speed ​​of an Automobile Sunroof DC Motor
  • A Method for Matching the Voltage and Rotational Speed ​​of an Automobile Sunroof DC Motor

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Embodiment Construction

[0017] like Figure 1-2 As shown, the present invention includes an adjustable DC regulated power supply 3 connected to the DC motor 2, and the input voltage to the DC motor 2 is adjustable within the range of 0-20V; the MCU 1 collects the real-time voltage of the DC motor 2 through the voltage conversion sampling circuit 4, The MCU1 collects the Hall time converted by the DC motor 2 through the Hall detection unit 5 . The model of MCU 1 is MC9S12GN48. The pins 20 and 21 of MCU 1 have the capture function, and are connected with the Hall detection unit 5 to obtain the Hall output signal.

[0018] The invention includes calculating the power supply voltage value of the DC motor 2 and the Hall time collected by the MCU 1 according to the voltage AD value sampled by the voltage conversion sampling circuit 4 when the DC motor 2 is unloaded; under the same temperature, humidity, and the same motor In this case, 14 sets of Hall time are collected under different voltages; the speci...

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Abstract

The invention discloses a matching method for a voltage and a rotating speed of an automobile skylight DC motor, which is characterized in that the matching method comprises the steps that an adjustable DC stabilized voltage supply is connected with the DC motor to adjust the input voltage of the DC motor within a range of 0-20V; an MCU collects a real-time voltage of the DC motor through a voltage conversion sampling circuit, and the MCU collects a converted Hall time of the DC motor through a Hall detection unit. By adopting the above method, the data of the rotating speed under a set voltage is matched according to the rotating speeds at different voltages, the converted data is scarcely influenced by the voltage within a short period of time, and thus the data consistency is good; and design certification is carried out on an anti-pinch software algorithm at the set voltage to provide data support. By adopting the matching method disclosed by the invention, the design of the anti-pinch software algorithm is simplified, the fluctuation of the voltage does not need to be considered, and the probability of mistaken pinching is reduced.

Description

technical field [0001] The invention relates to the optimization and improvement of a direct current motor of an automobile sunroof, in particular to a method for matching the voltage and the rotational speed of the direct current motor of an automobile sunroof. Background technique [0002] For car sunroof manufacturers, there will be many problems in realizing the anti-pinch function of the sunroof. One of the important problems is how to deal with the relationship between the speed and voltage of the brushed DC motor. [0003] During the operation of the sunroof, the sunroof ECU determines the motor speed by collecting the Hall signal; under different voltages, the motor speed is different. If the voltage of the DC motor fluctuates greatly in a short time, it will cause the motor speed to fluctuate greatly. In this case, if the relationship between the motor speed and voltage is not dealt with, it will cause false anti-pinch, and if it is handled incorrectly, it will als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P7/00
CPCH02P7/00
Inventor 周玉成程永海何晶李森贵赵凡
Owner WUHU MOTIONTEC AUTOMOTIVE
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