电机与控制应用
電機與控製應用
전궤여공제응용
ELECTRIC MACHINES & CONTROL APPLICATION
2014年
9期
1-6
,共6页
直线振荡执行器%动磁式%谐振频率%位移自传感
直線振盪執行器%動磁式%諧振頻率%位移自傳感
직선진탕집행기%동자식%해진빈솔%위이자전감
linear oscillatory actuator%moving-magnet type%resonant frequency%displacement self-sensor
针对一种新型无内定子动磁式直线振荡执行器，在建立其机电系统数学模型的基础上，采用矢量法分析其谐振特性。结果表明，当运行频率等于等效机械谐振频率时，执行器系统效率最高，此时电流位移相位差必定为90o。在动子位移子自传感算法的基础上，建立了基于电流位移相位差法的谐振频率跟踪控制系统。仿真结果证明，该算法能较好实现执行器变工况运行时的谐振频率跟踪控制，使系统保持高效率运行。
針對一種新型無內定子動磁式直線振盪執行器，在建立其機電繫統數學模型的基礎上，採用矢量法分析其諧振特性。結果錶明，噹運行頻率等于等效機械諧振頻率時，執行器繫統效率最高，此時電流位移相位差必定為90o。在動子位移子自傳感算法的基礎上，建立瞭基于電流位移相位差法的諧振頻率跟蹤控製繫統。倣真結果證明，該算法能較好實現執行器變工況運行時的諧振頻率跟蹤控製，使繫統保持高效率運行。
침대일충신형무내정자동자식직선진탕집행기，재건립기궤전계통수학모형적기출상，채용시량법분석기해진특성。결과표명，당운행빈솔등우등효궤계해진빈솔시，집행기계통효솔최고，차시전류위이상위차필정위90o。재동자위이자자전감산법적기출상，건립료기우전류위이상위차법적해진빈솔근종공제계통。방진결과증명，해산법능교호실현집행기변공황운행시적해진빈솔근종공제，사계통보지고효솔운행。
Aiming at a novel moving-magnet type linear oscillatory actuator, the mathematical model of the actuator electromechanical system was established and the resonant characteristic was analyzed. The results show when the operating frequency is equal to the mechanical resonant frequency, the actuator has the highest efficiency, and the phase angle difference between the current and displacement is 90o. Combined with the mover displacement estimation method, the resonant frequency tracking control system was proposed, which is based on the phase angle difference method. The simulation results show that this resonant frequency tracking strategy can adjust the operating frequency of the actuator to the varied resonant frequency, which makes the actuator operate with high efficiency.
