Automatic balance adjusting centrifuge and the control method thereof

Abstract

The present invention relates to an automatic balance adjusting centrifuge which calculates the magnitude and the location of imbalance of itself based on the vibration generated in the dynamic state and automatically compensate for the imbalance based on the calculation, and the control method thereof. The method includes: (a) measuring the amount of vibration of a rotor of a centrifuge, supporting buckets that load samples, at a predetermined rotational velocity; (b) determining whether the amount of vibration measured in step (a) is greater than an allowed value; and (c) when the amplitude of the vibration is greater than the allowed value, compensating for a weight imbalance of the rotor by an amount calculated based on the vibration amount measured in step (a) and returning to step (a), otherwise, performing a centrifugal separation by accelerating the rotor to a working velocity.

1 . An automatic balance adjusting centrifuge, comprising:
 a rotor supporting buckets that load samples;   a rotation driving means for rotating the rotor;   a vibration detecting means for detecting the vibration of the centrifuge;   an imbalance compensating means for compensating the weight imbalance of the rotor; and   a control means for controlling the imbalance compensating means to compensate for the weight imbalance of the rotor after calculating the imbalance based on the amount of the vibration detected by the vibration detecting means in the state of rotating the rotor with a predetermined rotational velocity.   
     
     
         2 . The automatic balance adjusting centrifuge in  claim 1 , wherein the vibration detecting means may comprise any one of a displacement sensor, a velocity sensor and an acceleration sensor. 
     
     
         3 . The automatic balance adjusting centrifuge in  claim 2 , wherein the rotation driving means comprises a centrifuge motor whose rotational shaft is combined with the rotor by shaft coupling,
 and the vibration detecting means is preferably installed into the body of the centrifuge motor.   
     
     
         4 . The automatic balance adjusting centrifuge in  claim 1 , wherein the rotor comprises a plurality of rotating arms which have the same radial length, are disposed with equal radial angles, and support buckets between each other,
 and the imbalance compensating means comprises a balance weight, transferred along the radial direction, installed in each rotating arm.   
     
     
         5 - 8 . (canceled)