Design And Experimental Investigation Of The Performance Of Composite Active-Passive Vibration Isolation Mounting

With the progress of science and technology, mechanical equipment becomes more and more large-scale and high-speed. At the same time, people have been put forward in higher requirements for the vibration. The traditional vibration isolation equipment cannot fully meet the requirements of vibration damping performance. According to the theory of vibration related knowledge and automatic control theory, on the base of advantages and disadvantages of the current isolation mounting, in this paper it developed a sort of composite vibration isolation mounting which it consist of two-stage isolation structure and the four axis inertial electromagnetic actuator.In order to realize active vibration control function, it developed a sort of four axis inertial electromagnetic actuator in this paper. At the same time, here it is based on the dynamic theory of the actuator as the starting point to the dynamic analysis of it, and analyses the related materials and parameters that affect the output force of the inertial electromagnetic actuator. First of all, in order to get the optimal structural parameters, it makes use of the finite element analysis software ANSOFT investigating and simulating the influence of magnetic circuit of the actuator. Then, it raised a point of project about resolve the heat dissipation of four axis inertial electromagnetic actuator. Above all, the four axis inertial electromagnetic actuator was designed and manufactured a prototype. At the end of this, the prototype for performance was testing.It designed and manufactured the part of the passive vibration isolator, according to the theory of vibration. And it simulated the structure of the stress response and modal through the finite element analysis software ANSYS. At the end, the active vibration isolation and passive isolation part were assembled together, it constituted a monolithic vibration isolation mounting . On this basis, through the experiment which test the input voltage of the actuator and the acceleration of rotor response transfer function hi? the input voltage of the actuator and acceleration of middle armor plate response transfer function gij?the input acceleration of actuator rotor and the middle armor plate response transfer function HIJ. In order to comprehend the isolation performance of the mounting, it fitted the front experimental data;the performance of the vibration isolation mounting was studied by simulation method. In this paper, it compared comparison experimental data and simulation method, and puts forward some suggestions for improvement, which laid the foundation for the next work.