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Control system of frequency conversion-controlled centrifugal machine

A control system and frequency conversion control technology, which is applied to electromechanical devices, electrical components, AC commutators, etc., can solve the problems of obvious running vibration, large running noise, and high starting noise, and achieves large control range, small control error, Smooth running effect

Active Publication Date: 2010-10-20
SHANGHAI ANTING SCI INSTR FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing common centrifuges use series excitation motors to change the speed of the motor by adjusting the input voltage, controlled by silicon controlled rectifiers. This kind of control has a small range of speed regulation, low control accuracy, large startup noise, and obvious running vibration. , the operation noise is loud, and the samples separated by the centrifuge will become cloudy again during the deceleration process

Method used

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  • Control system of frequency conversion-controlled centrifugal machine
  • Control system of frequency conversion-controlled centrifugal machine
  • Control system of frequency conversion-controlled centrifugal machine

Examples

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Embodiment Construction

[0034] Attached below figure 1 , 2 , 3 and embodiment further illustrate the present invention:

[0035] This embodiment is a control system applied to a DL-6000B frequency conversion controlled centrifuge. The centrifuge motor used for control is an asynchronous motor. The outer diameter of the motor is 130mm, the total length is 229mm, the diameter of the rotating shaft is 16mm, and the It is 750W. Control block diagram such as figure 1 shown.

[0036] The control system of this embodiment is attached with figure 1 A block diagram for the principle of operation is attached figure 2 The control panels given are samples and are attached image 3 The control system of the DL-6000B frequency conversion control centrifuge made by the main control board interface and connecting lines, wherein; the control block diagram (see attached figure 1), which is the working principle diagram of the centrifuge control system controlled by frequency conversion. Its control process is:...

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Abstract

The invention relates to a control system of a frequency conversion-controlled centrifugal machine. The common centrifugal machines are controlled by using silicon controlled thyristors, and the control has smaller speed regulation range, low control precision, great noise and obvious vibration. In the technical scheme of the control system, the principle of controlling a motor through a transducer is adopted, a singlechip is used as the control system of a control core, and a control panel arranged on the singlechip is used for displaying parameters and inputting parameters for control. The invention has the advantages that a man-machine interactive control is formed by adopting the transducer to control the frequency of the current input into the motor so as to ensure that operating parameters, such as acceleration and speed reduction of the rotation speed of the motor, operating time, temperature, door switch and the like, can be displayed on the panel in real time, the method is simple and convenient, and the control has large range, high precision and little error. The invention also has the advantages of stable motor operation, little vibration and low noise, and if the relevant parameters of the transducer are set as required, more functions can be achieved, thus the utilization value of the motor is greatly improved.

Description

technical field [0001] The invention relates to a structure of a frequency-variable speed-regulating centrifuge, in particular to a relatively accurate speed-adjustable centrifuge drive control system and control method. technical background [0002] The motor of the centrifuge is the driving part of the centrifuge, and its technical requirements are determined by the conditions of use. [0003] Existing common centrifuges use series excitation motors to change the speed of the motor by adjusting the input voltage, controlled by silicon controlled rectifiers. This kind of control has a small range of speed regulation, low control accuracy, large startup noise, and obvious running vibration. , the operation noise is loud, and the samples separated by the centrifuge will become cloudy again during the deceleration process. Contents of the invention [0004] In order to overcome the deficiencies of the prior art, provide a centrifuge with stable start and high-speed operatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K27/04
Inventor 陆永泉
Owner SHANGHAI ANTING SCI INSTR FACTORY
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