CAJ | 학술논문

研究悬臂板的主动控制及稳定性,以闭环控制系统方程的特征值分析为基础,分析研究了其稳定性.研究表明主动控制在增加系统阻尼性能的同时,亦可能导致系统出现不稳定现象.文中指出当仅有对点之间的负反馈时,系统是渐近稳定的;当负反馈增益矩阵呈非对称或对称但非正定时,系统可能会出现非稳定.
연구현비판적주동공제급은정성,이폐배공제계통방정적특정치분석위기출,분석연구료기은정성.연구표명주동공제재증가계통조니성능적동시,역가능도치계통출현불은정현상.문중지출당부유대점지간적부반궤시,계통시점근은정적;당부반궤증익구진정비대칭혹대칭단비정정시,계통가능회출현비은정.
Active vibration control and stability analysis of cantilever plate are discussed. Based on the analysis of characteristic equation of the closed-loop control system, it is shown that such an active control may increase damping properties of the system, meanwhile it may result in instability of the system. It is stable when the feedback only occurs between the collocated sensors and actuators, but it may be unstable when there exists the feedback between sensors and actuators, which mainly depends on the property of the gain matrix of feedback. If the gain matrix is symmetric and definitely positive, the system is stable.