Design of sensorless drive control system for axial flow blood pump(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2019年第1期
- Page:
- 77-80
- Research Field:
- 医学信号处理与医学仪器
- Publishing date:
Info
- Title:
- Design of sensorless drive control system for axial flow blood pump
- Author(s):
- WU Weiqiang; TAN Jianping; WANG Shuai; YU Zheqin; XIAO Zhiyong
- College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
- Keywords:
- ; Keywords: blood pump; cardiovascular disease; sensorless; Bluetooth; system design
- PACS:
- R318；TH789
- DOI:
- DOI:10.3969/j.issn.1005-202X.2019.01.015
- Abstract:
- Abstract: Objective To design a sensorless drive control system for realizing the closed-loop speed control, wireless monitoring and dynamic regulation of axial flow blood pump. Methods With STM32F103 as the main control chip, a 6-arm full-bridge drive circuit was designed. The rotor position and speed were obtained by zero-crossing detection. Moreover, a PI controller was designed to realize the closed-loop control, and the monitoring and control of the blood pump are realized by wireless Bluetooth communication. Results The drive control system had a fast response speed and its steady error was less than 1%. At rotate speed of 8 000 rpm, the designed system met the requirements of flow and differential pressure of human blood circulation. Conclusion The designed system realizes the sensorless startup and speed closed-loop control of axial flow blood pump. Through the Bluetooth module, the voltage, current and flow of the pump are monitored. During system running, the pump speed is dynamically adjusted according to the physiological condition of patients.
Last Update: 2019-01-25