【摘要】 在适当的假设条件下,推导出了压电作动器产生的弯矩与输入电压的关系式及压电传感器输出电压与输入弯矩的关系,进而得到H型密集模态挠性板模型的状态空间表达式,并由此模型出发,采用一种基于能量的传感器/作动器的优化配置策略,该准则可以很自然地研究整个动态模型的可控性和可观性,进而确定传感器/作动器的位置。针对H型密集模态挠性板振动主动控制的数值仿真表明了该准则的有效性。更多还原

【Abstract】 Under some appropriate assumptions,the relationships between the actuator′s output bending moment and input voltage and between the sensor′s output voltage and input bending moment are derived,then the state-space model of a piezoelectric sensors/actuators bonded flexible plate with close modes is achieved.Based on the state-space model,an energy-based optimal positioning strategy is adopted.The controllability and observability of the overall dynamical system can be studied by using the method.Then the optimal disposition can be determined.The numerical simulation of active vibration control of the H-type flexible plate with close modes is given to show the effectiveness of the method.更多还原