电机与控制应用
電機與控製應用
전궤여공제응용
ELECTRIC MACHINES & CONTROL APPLICATION
2015年
6期
43-46,53
,共5页
谭亚%尹成科%谈雪丹%陈琛
譚亞%尹成科%談雪丹%陳琛
담아%윤성과%담설단%진침
人工心脏%无刷直流电机%周期性脉动载荷%PID控制%无位置传感器
人工心髒%無刷直流電機%週期性脈動載荷%PID控製%無位置傳感器
인공심장%무쇄직류전궤%주기성맥동재하%PID공제%무위치전감기
artificial heart%brushless DC motor%periodic pulsating load%PID control%position sensorless
由于心室搏动产生的脉动流使得左心室辅助装置工作在脉动载荷下，导致电机转速会发生周期性波动，进而影响泵的效率和血液流动特性。针对左心室辅助装置设计了转速闭环控制方法以抑制脉动载荷引起的转速波动。仿真和试验表明在脉动载荷情况下有效地降低了转速波动范围，改善了左心室辅助装置性能。
由于心室搏動產生的脈動流使得左心室輔助裝置工作在脈動載荷下，導緻電機轉速會髮生週期性波動，進而影響泵的效率和血液流動特性。針對左心室輔助裝置設計瞭轉速閉環控製方法以抑製脈動載荷引起的轉速波動。倣真和試驗錶明在脈動載荷情況下有效地降低瞭轉速波動範圍，改善瞭左心室輔助裝置性能。
유우심실박동산생적맥동류사득좌심실보조장치공작재맥동재하하，도치전궤전속회발생주기성파동，진이영향빙적효솔화혈액류동특성。침대좌심실보조장치설계료전속폐배공제방법이억제맥동재하인기적전속파동。방진화시험표명재맥동재하정황하유효지강저료전속파동범위，개선료좌심실보조장치성능。
Since a certain amount of pulsatility remains in blood flow because of ventricular pumping, LVADs work under a pulsating load, which causes speed fluctuation in the motor and subsequently harms the efficiency of a LVAD and blood flow pattern. A speed closed-loop control method aiming to suppress speed fluctuation caused by pulsating load has been designed for an example LVAD. Simulation and experimental results showed that speed fluctuation was effectively reduced under pulsating load, improved the performance of the LVAD.
