Sensorless control method for motor for artificial heart pump

An artificial heart and control method technology, applied in the field of biomedical engineering, can solve problems such as the need to improve detection accuracy, and achieve the effects of reducing research and development volume, improving estimation accuracy, and reducing low-frequency torque ripple

Pending Publication Date: 2022-05-27
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the existing sensorless control method can complete the detection of the position and speed of the electronic rotor well, the detection accuracy still needs to be improved.

Method used

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  • Sensorless control method for motor for artificial heart pump
  • Sensorless control method for motor for artificial heart pump
  • Sensorless control method for motor for artificial heart pump

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Embodiment Construction

[0035] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention.

[0036] In embodiments of the present invention, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article of manufacture or apparatus comprising a series of elements includes not only those elements, but also Include other elements not expressly listed, or which are inherent to such a process, method, article of manufacture or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article of manufacture or apparatus that includes the element.

[0037] ...

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Abstract

The invention provides a sensorless control method for a motor for an artificial heart pump. According to the control method, on the basis of establishing a mathematical model of the motor for the artificial heart pump, the position and the rotating speed of a rotor of the motor for the artificial heart pump are detected by adopting a method of combining a high-frequency injection method and a sliding-mode observer. According to the control method, a high-frequency injection method is adopted in a low-speed domain of a rotor, a sliding-mode observer is adopted in a middle-high-speed domain of the rotor, the advantages of the high-frequency injection method and the sliding-mode observer are combined, meanwhile, aiming at the defects of the two methods, the two methods are improved respectively, and smooth switching between different rotating speed estimation methods is achieved through a speed domain switching algorithm based on GAPSO optimization. Sensorless control of the motor rotor for the artificial heart pump in the full speed domain can be achieved, and the method has important value and significance for reducing the size of the artificial heart pump, reducing infection caused by sensor and circuit placement and improving the control performance.

Description

technical field [0001] The invention relates to the field of biomedical engineering, in particular to a sensorless control method for an artificial heart pump motor. Background technique [0002] Heart failure has become a serious disease that threatens human life and health. Artificial heart pump assists the failing heart to complete the pumping function, which is an important means of treating heart failure. The working environment of the artificial heart pump is very special. In the human body, this has high requirements on the implantability of the heart pump. It must be ensured that the motor used for the heart pump is small enough and light enough to be safe for the human body. The damage to the blood is as low as possible. The motor for artificial heart pump is similar to the conventional permanent magnet motor. Generally, the position sensor is used to obtain the rotor position information. However, the installation of the sensor will not only increase the size and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/13H02P21/05H02P21/18H02P21/14H02P6/18H02P6/182H02P6/10H02P6/34H02P25/026
CPCH02P21/13H02P21/05H02P21/18H02P21/14H02P6/183H02P6/182H02P6/10H02P6/34H02P25/026H02P2207/05
Inventor 曲洪一刘鑫王聪孟令伟王秋良
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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