CAJ | 학술논문

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,提出一种基于全维状态观测器的动子位移自传感算法。通过对执行器输入电压和输出电流信号的处理和计算来估算动子位移。仿真和实验结果均表明：在变压变频控制方式下,该算法能实现不同电气驱动频率下的动子位移自传感；采用该算法进行行程估算的绝对误差最大值为0.32 mm,相对误差最大值为2.6%。此算法可以满足直线压缩机和直线泵类负载的变行程控制要求。
침대일충신형무내정자동자식직선진탕집행기,재건립기궤전계통수학모형적기출상,제출일충기우전유상태관측기적동자위이자전감산법。통과대집행기수입전압화수출전류신호적처리화계산래고산동자위이。방진화실험결과균표명：재변압변빈공제방식하,해산법능실현불동전기구동빈솔하적동자위이자전감；채용해산법진행행정고산적절대오차최대치위0.32 mm,상대오차최대치위2.6%。차산법가이만족직선압축궤화직선빙류부재적변행정공제요구。
Based on the mathematical model of electromechanical system for a novel moving-magnet type Linear oscillatory actuator without inner stator, the self-sensing algorithm of mover displacement for the linear oscillatory actuator is established, which is achieved by the full-dimensional state observer. Mover displacement is estimated through input voltage and output current signal processing and calculating. The simulation and experimental results show that the self-sensing algorithm can achieve the mover displacement of different electrical driving frequency under VVVF control mode. The maximum absolute error of estimated stroke is 0. 32 mm,and the maximum relative error is 2. 6%. This method is suitable to the variable stroke control of directly driven compressors and pumps.