医疗卫生装备2018，Vol.39Issue(4)：30-34,38,6.DOI:10.7687/j.issn1003-8868.2018.04.030
基于逆变技术的正弦交变磁场治疗系统的研究
Research on sinusoidal alternating magnetic field therapy system based on inverter technology
刘全利 1张元良 1张洪潮 1李乾坤2
作者信息
- 1. 大连理工大学机械工程学院,辽宁大连116023
- 2. 青岛海信医疗设备股份有限公司,山东青岛266071
- 折叠
摘要
Abstract
Objective To develop a sinusoidal alternating magnetic field therapy system in order to overcome the disadvantages of the single output frequency and the low effective value of the output magnetic field strength of the alternating magnetic field therapy system in the market,of which the frequency and magnetic density both were continuously adjustable. Methods Multi winding Helmholtz coil was used as the magnetic field generator.On the basis of inverter technology,bipolar equivalent area method considering dead zone and variable speed integral incremental PID control algorithm were used to achieve the accuracy control of magnetic frequency and density in the coil.The accuracy of the resulting waveform and the accuracy of the magnetic field strength was verified by simulation calculation and system current and magnetic field strength test.Results The magnetic field treatment system gained high performance,total harmonic distortion (THD)of sine wave met the requirements of international standards.The obtained magnetic density was as expected of the simulation and calculation. Conclusion The device provides continuously adjustable magnetic field,which has a positive effect on the research for the medical staff, and technical references are provided to the research of magnetic field therapy system.关键词
逆变技术/正弦交变磁场/等效面积法/变速积分增量式PID/磁场强度Key words
inverter technology/sinusoidal alternating magnetic field/equivalent area method/variable speed integral in-cremental PID/magnetic field strength分类
医药卫生引用本文复制引用
刘全利,张元良,张洪潮,李乾坤..基于逆变技术的正弦交变磁场治疗系统的研究[J].医疗卫生装备,2018,39(4):30-34,38,6.
