Method for constructing off-line database of advance based on quick search method

A search method and construction method technology, applied in the field of axial force balance control of scroll machines, can solve problems such as large amount of calculation, consumption of computing resources and time, poor rapidity, etc., and achieve the effect of obvious effect and reduce the amount of optimization calculation.

Pending Publication Date: 2021-12-17
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to overcome the problem that in the prior art, the current axial electromagnetic dynamic sealing control method needs to establish an advance tracking database for different frequencies or rotating speeds in the off-line phase. The problem of large amount of calculation, relatively long consumption of computing resources and time, and poor speed, provides a method of building an advanced offline database based on a fast search method that can greatly reduce the amount of calculation

Method used

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  • Method for constructing off-line database of advance based on quick search method
  • Method for constructing off-line database of advance based on quick search method
  • Method for constructing off-line database of advance based on quick search method

Examples

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Embodiment 1

[0053] Such as figure 1 The shown method for constructing an advance offline database based on the fast search method comprises the following steps:

[0054] S1, constructing the database of "exhaust pressure-average cumulative error in the ascending section-lag angle" of the scroll machine;

[0055] S2, constructing the "tracking frequency-single lead" database of the vortex machine;

[0056] S3, constructing the "tracking frequency-double lead" database of the vortex machine.

[0057] Among them, if it is used for "single lead PID tracking control", only the first two steps can complete the database construction; if it is used for "double lead PID tracking control", it needs to include figure 1 Three steps are shown.

[0058] Such as figure 2 As shown, taking the exhaust pressure of a representative scroll machine as an example, under different exhaust port pressures, a relationship curve of "exhaust port pressure - axial gas separation force - main shaft rotation angle",...

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Abstract

The invention belongs to the technical field of axial force balance control of vortex machines, and particularly relates to a method for constructing an off-line database of advance based on a quick search method. The method comprises the following steps: S1, constructing an exhaust pressure-rising section average accumulative error-lag angle database of the vortex machine; S2, constructing a tracking frequency-single advance database of the vortex machine; S3, constructing a tracking frequency-double advance database of the vortex machine. According to the method, in the off-line advance database construction stage, the optimization calculation amount can be greatly reduced, and the effect on a double-advance tracking scheme is more obvious.

Description

technical field [0001] The invention belongs to the technical field of scroll machine axial force balance control, in particular to an off-line database construction method for advance amount based on a fast search method. Background technique [0002] As a near-direct-drive rotary volumetric compressor, the scroll compressor has the advantages of stable pressure, high efficiency, low vibration, low noise, and few parts. When the compression chamber is working, it is affected by the axial gas separation force, which will cause the movable and static scrolls to have a tendency to separate, and the gas separation force varies with the rotation angle and the pressure of the exhaust port. [0003] During the suction and exhaust process of the scroll compressor, the gas in each compression chamber will generate a thrust to the movable and static scrolls to separate the movable and static scrolls. The sum of the thrusts is the gas separation force. If the gas separation force is ...

Claims

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Application Information

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IPC IPC(8): G06F16/21G06F16/28G06F16/2455
CPCG06F16/21G06F16/284G06F16/2455Y02D10/00
Inventor 蔡炯炯蒋加祯张文辉王子辉施秧
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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