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Device and method for observing rotor position in motor control

A technology of motor control and rotor position, applied in motor generator control, control of electromechanical transmission, electronic commutation motor control, etc., can solve problems such as inability to meet motor smoothness and insufficient observation accuracy, achieve accurate judgment and reduce hardware. The effect of circuit dependence and high follow-up accuracy

Inactive Publication Date: 2012-02-08
HEBEI UNIV OF TECH
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

At present, hardware sensors are mostly used to observe the rotor position, such as Hall sensors, photoelectric encoders, resolvers, etc. Among them, Hall sensors are cheap and widely used, but when directly applied to vector control, their observation accuracy is insufficient and cannot meet the requirements Motor smoothness requirements

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  • Device and method for observing rotor position in motor control
  • Device and method for observing rotor position in motor control
  • Device and method for observing rotor position in motor control

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Embodiment Construction

[0037] The rotor position observation hardware part in the motor control provided by the present invention is mainly Hall position sensor and detection circuit. There are two implementation forms of the rotor position observer as mentioned above. The motor controller of the rotor position observer, the rotor position observer uses the MCU of the motor controller; the second is an independent rotor position observer, the MCU of the independent rotor position observer is controlled by the MCU of the motor controller.

[0038]A rotor position observation and control method in motor control provided by the present invention mainly includes the steps:

[0039] Motor rotor initial position detection;

[0040] The rotor position and speed algorithm that receives Hall plate signals and processes the signals;

[0041] Vector control using rotor position and speed information for vector control;

[0042] When the Hall fails and the output signal is abnormal, it can operate safely unde...

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Abstract

The invention relates to a method and device for observing and controlling a rotor position in motor control. According to the method and the device, an initial position angle of a motor rotor can be observed; angular errors caused by an imprecise assembled angle of a Hall sensor can be eliminated by online discrimination of software; a real-time speed detection program is provided to eliminate an angular accumulated error caused by imprecision of an angular speed omega; a rotor position angle can be precisely tracked in a motor vector control operation process, the rotor angle is prevented form overflowing, and self-detection of the motor in reverse rotation can be realized; and when a certain sensor has a fault, a system can judge a fault point per se and performs self-adaption to achieve the function of still normally running. According to the device and the method, independence on a hardware circuit is reduced, observation and real-time tracking of the rotor position angle can be realized, the function of fault judgment of the system can be used for protecting the motor, and loss caused by motor locking or running out is prevented. The device has a great practical value in the fields of electric vehicles and precise machine tools, and has the advantages of reliability in operation, low cost and wide application range.

Description

technical field [0001] The invention relates to a method and device for observing and controlling the rotor position in motor control, especially a method and device for rotor position detection and angle calculation, specifically a method and device for accurately observing rotor angle information in vector control device. The invention can improve the running performance of the motor, and adds the calculation method of the rotor acceleration, improves the response speed of the motor, and has great significance for simplifying the vector control control program and reducing the hardware cost. Background technique [0002] As the pace of technological updates is gradually accelerating, people's requirements for motor control performance are also getting higher and higher. Traditional motor control methods have gradually been unable to meet people's production and living needs, and vector control technology has become a The technology of choice for motor control. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/14H02P21/18
Inventor 李练兵赵昭赵治国
Owner HEBEI UNIV OF TECH
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