基于能量最小准则确定驱动器位置及仿真

在研究智能结构振动主动控制驱动器的位置优化问题中,首先推导了压电传感方程和压电致动方程,然后根据控制信号能量的表达式,以控制能量最小为目标函数,压电驱动器的位置坐标为变量,对压电驱动器的位置进行优化。最后结合智能简支梁实例应用matlab软件计算出其粘贴压电驱动器的最优位置,并通过编写APDL(ansys parameter design language)程序对粘贴有压电材料的智能简支梁结构进行瞬态动力学分析,实现对智能梁的振动控制仿真。仿真结果表明,此种方法能有效地抑制智能梁的振动。

The optimal placement of piezoelectric actuator and simulated basing on the criterion of minimizing the control energy determinate

The equation of piezoelectric sensor and piezoelectric actuator were derived in the process of investigating the optimal placement of piezoelectric actuator for active vibration control of the intelligent structure firstly,then the smallest energy as the objective function and the position coordinate of the piezoelectric actuator were taken as the variabl according to the energy criterion,the locations of the piezoelectric actuators were optimized.Finally,the optimal placements of the piezoelectric actuators were calculated by matlab.The vibration control of structure had become true through compiling the program of APDL(ansys parameter design language) and using transient dynamic analysis.The simulation investigated that this approach had more effective in suppressing the vibration of the intelligent beam in this paper.