Peristaltic pump accurate constant volume method based on frequency curve optimization

被引：0
|
作者：
Zheng G. [1 ]
Yang C. [1 ]
Zhu H. [1 ]
Li Y. [1 ]
Chen J. [1 ]
机构：
[1] School of Information Science and Engineering, Central South University, Changsha
来源：
Zhu, Hongqiu (hqcsu@csu.edu.cn) | 2018年 / Science Press卷 / 39期
关键词：
Bubble; Error compensation; Parabolic acceleration and deceleration; Peristaltic pump; State transition algorithm(STA);
D O I：
10.19650/j.cnki.cjsi.J1803847
中图分类号：
学科分类号：
摘要：
Aiming at the problem that the gas-liquid coexistence leads to low precision due to the peristaltic pump has a low volume, low flow rate and high viscous fluid, a precise determination method of the peristaltic pump based on the motor frequency curve is proposed. Firstly, by analyzing the working principle of the peristaltic pump, the relationship model between target capacity and driving frequency of motor is established. Aiming at the phenomenon that the discontinuity of the driving frequency curve of the motor motor leads to bubble generation, a driving frequency model of the motor with error compensation and parabola acceleration and deceleration curve is proposed. Then the model parameters are identified, and the volume outside the sample set is also selected for on-line verification. Finally, the proposed method is compared with the frequency control method of the parabola, uniform, exponential acceleration and deceleration curve respectively without error compensation. The experimental results show that the accuracy of the model is increased by 83.05%, 41.18% and 28.57%. The maximum relative error is 0.9%, and the average relative error is 0.5%, which verifies the correctness and feasibility of the proposed method. © 2018, Science Press. All right reserved.
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页码：28 / 34
页数：6
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