Influence of Physical Parameters of Inertial Actuators on the Performance of Vibration Active Control
The influence of physical parameters of inertial actuators(IAs)on the performance of vibration active con-trol is studied.The dynamic equations of the inertial actuators are combined with H2 optimization theory.With the kinetic en-ergy of the controlled system as the objective function,and combining with the Liénard-Chipart stability criterion,the criti-cal relative gain for active control of the inertial actuators is calculated.Furthermore,the effects of mass ratio,stiffness ratio and damping ratio on the relative gain and control effectiveness are analyzed.The research results indicate that the optimal relative gain of the inertial actuators is inversely proportional to the stiffness ratio.Reducing the stiffness of the inertial actua-tors can improve the relative gain and enhance the control effectiveness.In addition,increasing the mass ratio is also benefi-cial for improving the control effectiveness.Finally,the relationship between the control effectiveness of the inertial actua-tors and their physical parameters is derived for the optimal relative gain.This study provides a theoretical guidance for the design of inertial actuator parameters.
vibration and waveinertial actuatorphysical parameterH2 optimizationactive controlstability
万方数据
维普
