A novel valve coil current-based droplet mass control method: Proportional valves for liquid injection process

IF 5.2 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Measurement Pub Date : 2025-06-13 DOI:10.1016/j.measurement.2025.118168

Pengcheng Gao , Kun Ren , Tao Luo , Chentao Ke , Heyang Geng , Yan Sun , Jiabo Cheng

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引用次数: 0

Abstract

In order to enhance the accuracy of liquid injection, a novel droplet mass control method is proposed in this paper. First, the working principle of a proportional valve is analyzed, and a current-displacement model is established based on Newton’s second law. Next, by taking into account the key parameters such as maximum working frequency and flow rate coefficient, the relationship between the mass of a droplet and the displacement of the valve piston is built. Then, using computational fluid dynamics (CFD) simulation, the method for determining the flow rate coefficient is denoted under the conditions of different displacements. Subsequently, by using rational cubic Bézier curves, the nonlinear relationship between the coil current and the mass of a droplet is established. Finally, a fuzzy PID control algorithm is employed to achieve rapid positioning of the valve piston, ensuring a stable output of the droplet mass. The experimental results indicate that the proposed method can control the final liquid injection error is within 0.4 mg, ensuring high precision in liquid injection.

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一种新的基于阀圈电流的液滴质量控制方法：比例阀

为了提高液体注射的精度，本文提出了一种新的液滴质量控制方法。首先，分析了比例阀的工作原理，基于牛顿第二定律建立了比例阀的电流-位移模型。其次，考虑最大工作频率、流量系数等关键参数，建立液滴质量与阀活塞位移的关系。然后，利用计算流体力学（CFD）模拟，给出了不同排量条件下流量系数的确定方法。然后，利用有理三次bsamzier曲线，建立了线圈电流与液滴质量之间的非线性关系。最后，采用模糊PID控制算法实现阀活塞的快速定位，保证液滴质量的稳定输出。实验结果表明，该方法可将最终进液误差控制在0.4 mg以内，保证了进液精度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Measurement 工程技术-工程：综合

CiteScore

10.20

自引率

12.50%

发文量

1589

审稿时长

12.1 months

期刊介绍： Contributions are invited on novel achievements in all fields of measurement and instrumentation science and technology. Authors are encouraged to submit novel material, whose ultimate goal is an advancement in the state of the art of: measurement and metrology fundamentals, sensors, measurement instruments, measurement and estimation techniques, measurement data processing and fusion algorithms, evaluation procedures and methodologies for plants and industrial processes, performance analysis of systems, processes and algorithms, mathematical models for measurement-oriented purposes, distributed measurement systems in a connected world.