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Rotation detection device of motor

A technology of rotation detection and motor, which is applied in measuring devices, measuring electrical variables, converting sensor output, etc. It can solve problems such as unstable current ripple and difficulty in judging motor rotation, and achieve the effect of preventing errors and reducing costs

Pending Publication Date: 2022-03-04
HYUNDAI TRANSYS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ripple of the current generated after the motor brakes (brakes) is unstable, and even if the increment of the ripple is obtained, it is difficult to clearly distinguish whether the increment is positive or negative, so there is a problem that it is difficult to judge the rotation of the motor

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  • Rotation detection device of motor
  • Rotation detection device of motor
  • Rotation detection device of motor

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Embodiment Construction

[0031] The advantages, features, and methods of achieving them of the present invention will become more apparent with reference to the embodiments described in detail below and the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, and can be implemented in various forms, and the present embodiments are provided to ensure complete disclosure of the present invention, and to fully inform those of ordinary skill in the art to which the present invention belongs, and The present invention is defined only by the scope of the claims. Throughout the specification, the same reference numerals refer to the same components.

[0032] The terms "...unit", "...unit", "...module" and the like described in the specification indicate a unit that processes at least one function or operation, and can be realized by hardware, software, or a combination of hardware and software.

[0033] In addition, in this specification, distinguishing th...

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Abstract

The embodiment of the invention provides a rotation detection device of a motor. The rotation detection device of the motor includes: a first switching element and a second switching element connected to a power source; a third switching element and a fourth switching element connected to ground; a motor connected between a first node where the first switching element and the third switching element are connected and a second node where the second switching element and the fourth switching element are connected; a first resistive element and a second resistive element provided between the third switching element and the ground and between the fourth switching element and the ground, respectively; and a controller that integrates a current flowing through the first resistive element or the second resistive element by a back electromotive force generated when the motor is braked to derive a rotation amount of the motor, and generates a pulse based on the rotation amount of the motor.

Description

technical field [0001] The present invention relates to a rotation detection device of a motor capable of generating pulses for detecting the rotation of the motor without a Hall sensor. Background technique [0002] A stator of a motor applied to a seat uses an armature formed by passing a current through a coil, and a permanent magnet formed by repeating N poles and S poles is applied in the rotor. In order for the motor to rotate continuously, it is necessary to form a continuous rotating magnetic field of the motor, and in order to form a continuous rotating magnetic field, the current flowing through the coils of each phase of the armature must be switched at an appropriate point of time. At this time, it is necessary to accurately identify the position of the rotor to determine the switching time point. [0003] In particular, in order for the motor to run smoothly, it is necessary to precisely match the position of the rotor and the switching time point of the phase ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/182
CPCH02P6/182H02P7/0094G01D5/244G01R19/165
Inventor 李昊徹辛钟仁
Owner HYUNDAI TRANSYS INC
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