High-speed centrifugal turntable and positioning control method of a fully automatic immune analyzer

Abstract

The invention belongs to the technical field of motor drive, and discloses a high-speed centrifugal turntable of an automatic immune analyzer and a positioning control method, comprising a centrifugal turntable, a motor driver, a brushless DC motor, a reagent card slot and an absolute encoder; the quality of the centrifugal turntable is concentrated in At the central axis, the outer edge is a fan-shaped strip structure to minimize the mass and reduce the moment of inertia under the condition of a certain radius; the DC brushless motor accelerates the open-loop operation according to the S-shaped curve to a specific speed, which drives the direct-connected installation. The centrifugal turntable on the motor output shaft rotates to separate the samples in the reagent card slot. After the separation is completed, the motor speed is reduced. When the speed is reduced to the set speed, the motor moves in a closed loop. The device detects the position of the centrifugal turntable, and uses the PID control algorithm to precisely control the centrifugal turntable to stop at the specified position, which improves the positioning accuracy of the high-speed centrifugal turntable of the automatic immunoassay analyzer and facilitates the subsequent processing of the sample by the robotic arm.

Description

technical field [0001] The invention belongs to the technical field of motor drive, and in particular relates to a high-speed centrifugal turntable of a fully automatic immune analyzer and a positioning control method. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: the rapid development of modern medicine not only keeps innovating in medical methods, but also puts forward higher requirements for the efficiency of medical testing. The fully automatic immune analyzer is one of the important analytical instruments often used in clinical testing. It involves multiple disciplines and requires high precision and high reliability. It is a very complex system. The automatic immune analyzer automates the manual barcode scanning operation, card removal and puncture operation, reagent sample addition operation, high-speed centrifugation operation, oscillation discarding operation, etc. in medical clinical testing. impr...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the problems existing in the prior art are: the centrifuge module of the current fully automatic immunoassay analyzer has the disadvantages of centrifuge turntable structure being bulky, rotating speed unable to meet the requirement of separating reagents, centrifuge turntable not being able to be accurately positioned, low degree of automation, etc.

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