Device and method for controlling brushless direct-current motor for anesthesia machines

A brush DC motor and control device technology, which is applied in the direction of motor generator control, electromechanical transmission control, electronic commutation motor control, etc., can solve problems such as unstable air flow velocity, low speed control accuracy, and slow circuit response speed. Achieve the effects of improving stability, improving the ability to suppress speed fluctuations, and simplifying calculation methods

Active Publication Date: 2015-07-01
BEIJING AEONMED
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AI Technical Summary

Problems solved by technology

[0003] At present, the monitoring and control technology based on brushless DC motors has the following disadvantages: the speed control accuracy is low, and the fluctuation of the speed is likely to cause the air flow to be unstable; the response speed of the circuit is slow, and the software control algorithm needs to be improved.

Method used

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  • Device and method for controlling brushless direct-current motor for anesthesia machines
  • Device and method for controlling brushless direct-current motor for anesthesia machines
  • Device and method for controlling brushless direct-current motor for anesthesia machines

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Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for simplicity and clarity and does not in itself indicate a ...

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Abstract

The invention provides a device for controlling a brushless direct-current motor for anesthesia machines. The device comprises a speed detector used for detecting the rotation speed of a brushless direct-current motor, an acquisition device used for acquiring a current signal and a voltage signal of the brushless direct-current motor, a three-phase inverter connected with the brushless direct-current motor, a driver used for driving a power tube in the three-phase inverter to be switched on / off, a current regulator used for carrying out PID regulation according to the current signal and a preset current reference signal to generate a first control signal according to which the driver drives the power tube in the three-phase inverter to be switched on / off so as to regulate the rotation speed of the brushless direct-current motor, a signal singularity analyzer used for generating a speed instruction according to the current signal, the voltage signal and the rotation speed of the brushless direct-current motor, and a speed regulator used for carrying out PID regulation according to the rotation speed of the brushless direct-current motor and the speed instruction to generate a second control signal and generating a speed regulation instruction according to the first control signal and the second control signal to regulate the rotation speed of the brushless direct-current motor.

Description

technical field [0001] The invention relates to the field of medical device manufacturing, in particular to a control device and method for a brushless DC motor used in an anesthesia machine. Background technique [0002] Anesthesia machines have been more and more widely used in the field of ICU treatment. Due to the advantages of low cost, small size, and high efficiency of DC brushless motors, the use of DC brushless motors as gas sources has attracted more and more attention from the anesthesia machine equipment industry. [0003] At present, the monitoring and control technology based on brushless DC motors has the following disadvantages: the speed control accuracy is low, and the fluctuation of the speed is likely to cause the air flow to be unstable; the response speed of the circuit is slow, and the software control algorithm needs to be improved. Contents of the invention [0004] The present invention aims to solve at least one of the above-mentioned technical ...

Claims

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Application Information

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IPC IPC(8): H02P21/00
Inventor 刘琳
Owner BEIJING AEONMED
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