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Method and device for detecting motor rotor

A motor rotor and detection method technology, applied in the direction of electronic commutator, etc., can solve the problems that the power system cannot know the position of the motor rotor, the driver cannot drive the motor, etc.

Active Publication Date: 2019-05-07
昆山合朗航空科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the Hall element is a vulnerable part, once the Hall element does not work normally during the operation of the motor (for example, the Hall element fails, etc.), the power system cannot know the rotor position of the motor, and the driver cannot drive the motor. run

Method used

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  • Method and device for detecting motor rotor
  • Method and device for detecting motor rotor
  • Method and device for detecting motor rotor

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Embodiment 1

[0052] see figure 1, the detection method of the motor rotor proposed in this embodiment specifically includes the following steps:

[0053] Step S101: the driver judges in real time whether the output voltages of the hall elements currently used by the motor are all high level / low level.

[0054] Before the driver judges in real time whether the output voltage of the Hall element currently used by the motor is high level / low level, it also includes:

[0055] Hall elements are installed in the motor, wherein the number of Hall elements is greater than one set.

[0056] The Hall element is a magnetic sensor based on the Hall effect. The Hall element can be made of various semiconductor materials, such as Ge, Si, InSb, GaAs, InAs, InAsP, and multilayer semiconductor heterostructure quantum well materials. Hall elements have many advantages, such as small size, light weight, convenient installation, low power consumption, high frequency, vibration resistance, and are not afraid...

Embodiment 2

[0070] see figure 2 , image 3 and Figure 4 , the present embodiment provides a detection device for a motor rotor comprising: an output voltage judging module 1, an affirmative execution module 2, and a matching module 3 connected in sequence, wherein the output voltage judging module 1 is used for the driver to judge the current hall of the motor in real time. Whether the output voltages of the elements are all high level / low level, yes Execution module 2 is used if the above judgment is yes, then the driver detects the output voltages of all Hall elements other than those currently in use, and the matching module 3 is used for detection When the Hall element whose output voltage is not all high level / low level exists, the driver will match the detected Hall element with the motor to detect the rotor position of the motor.

[0071] In addition, the detection device for the rotor of the motor also includes: an installation module 4 for installing Hall elements in the moto...

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Abstract

The application provides a motor rotor detection method and a motor rotor detection device, and relates to the technical field of intelligent control. The motor rotor detection method comprises the following steps: a driver judges whether the output voltages of a currently used Hall element of a motor are at high / low level in real time; if the output voltages are at high / low level, that the current Hall element fails can be judged, and the driver detects the output voltages of all Hall elements except the currently used Hall element; and when the driver detects that there is a Hall element of which the output voltages are not all at high / low level, the driver matches the detected Hall element with the motor, and the Hall element continues to detect the position of the rotor in the motor. The problem that the position of the rotor in the motor cannot be known due to damage of the currently used Hall element is avoided. Normal operation of the motor is ensured.

Description

technical field [0001] The invention relates to the technical field of intelligent control, in particular to a detection method and device for a motor rotor. Background technique [0002] A motor, also called a motor, is an electromagnetic device that converts or transmits electrical energy based on the principle of electromagnetic induction. The motor includes a stator and a rotor, and the driving torque is usually generated through the commutation of the rotor, and then the electrical energy is converted into mechanical energy to provide a source of power for various machines. [0003] The Hall element is a semiconductor device that uses the Hall effect. It is generally used in motors (especially permanent magnet non-generators) to detect the position of the rotor. When the position of the rotor reaches the preset commutation position, it will The signal is transmitted to the driver, and the driver controls the reversing operation of the motor. [0004] At present, a set...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P6/16
CPCH02P6/16
Inventor 田瑜江文彦
Owner 昆山合朗航空科技有限公司