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A multi-axis coordinated high-precision liquid phase pump control method based on online compensation

A control method and technology of liquid phase pump, applied in pump control, liquid variable capacity machinery, machine/engine, etc., can solve problems such as large pulsation rate, uncompensable offline operating parameters, and poor flow delivery consistency.

Active Publication Date: 2020-08-14
BEIJING SATELLITE MFG FACTORY
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AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: Aiming at the problems of low flow accuracy, poor flow delivery consistency, large pulsation rate, and offline compensation of operating parameters of the existing liquid phase pump in the current prior art, a multi-phase pump based on online compensation is proposed. Axis cooperative high precision liquid phase pump control method

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  • A multi-axis coordinated high-precision liquid phase pump control method based on online compensation
  • A multi-axis coordinated high-precision liquid phase pump control method based on online compensation
  • A multi-axis coordinated high-precision liquid phase pump control method based on online compensation

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Embodiment Construction

[0048] A multi-axis collaborative high-precision liquid-phase pump control method based on online compensation. By monitoring and calculating the motor speed of the liquid-phase pump in different states, it ensures the coordination of multi-axis control of the liquid-phase pump and the fluid compressibility. Flow compensation and ultra-high pressure sealing, such as figure 1 As shown, the specific contents include:

[0049] (1) Assemble the high-precision ultra-high pressure liquid phase pump

[0050] The high-precision ultra-high pressure liquid phase pump is composed of two independent pump units, called A pump unit and B pump unit, which are respectively composed of two sub-pumps, called A-PRI sub-pump and A-ACC sub-pump respectively. pump, B-PRI sub-pump, B-ACC sub-pump. Among them, the A-PRI sub-pump is the main pump of the A pump unit, the A-ACC sub-pump is the auxiliary pump of the A pump unit, the B-PRI sub-pump is the main pump of the B pump unit, and the B-ACC sub-...

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Abstract

The invention discloses a multi-shaft cooperative control method based on online compensation and used for a high-accuracy liquid-phase pump. Through the control method adopting online compensation for motor parameters and cooperative running of multi-shaft motors, stable constant-flow conveying flow rate accuracy consistency index and pulsatility index of a liquid chromatograph taking the high-accuracy liquid-phase pump as a core can be kept under different working conditions and medium conditions; the problems that the flow rate accuracy and the flow rate conveying consistency are low, the pulsation rate is high, and the running parameters cannot be compensated off line, of an existing liquid-phase pump are overcome; and high accuracy and stable working condition are achieved.

Description

technical field [0001] The invention relates to a multi-axis cooperative high-precision liquid phase pump control method based on online compensation, which belongs to the technical field of electronic engineering. Background technique [0002] At present, foreign instrument suppliers have introduced ultra-high performance liquid chromatography (UHPLC for short) with higher resolution, faster analysis speed, and higher sensitivity, and they are rapidly applied in food safety, pharmaceuticals, environmental testing, scientific research and other fields. This type of instrument can not only greatly improve the work efficiency of chromatographers, but also significantly reduce the consumption of solvents and samples, greatly reduce the demand for environmental resources, and significantly save costs. [0003] At present, there is still a lack of UHPLC technology with independent intellectual property rights in China. The main reason is that the core component of UHPLC—the high-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B49/20F04B49/06
CPCF04B49/06F04B49/20
Inventor 魏兴亚吕晶薇殷参谭旭曾婷王晓阳徐迎丽
Owner BEIJING SATELLITE MFG FACTORY
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