Design And Applied Research Of Magnetic Suspension Absorber With Three Degrees Of Freedom Translation Parallel Robot Mechanisms

Vibration isolating device on ambulance stretcher system can attenuate the vibration and impact acting on body of ambulance stretcher from soleplate of bodywork on the way to hospital, which not only can never increase wounded person's pain and worsen state of an illness, but also be convenient for first aid of medical operator. So it can improve the stableness and smoothness of ambulance effectually. But now our country's absorber has not good effect of vibration isolating. In this paper, aiming at these problems ,the application of magnetic suspension technique in practice is analyzed, and the magnetic suspension applied characteristics of Rare Earth Permanent Magnet material in the vibration isolating system are studied, and the method with which spatial flux density and magnetic force is calculated quantitatively is presented. Several kinds of magnetic suspended absorbers are trial-manufactured and their good magnetic suspension trait and favorable nonlinear rigidity trait are tested and analyzed synthetically by the methods of experiment and artificial neural network. Moreover , an experiment coefficient is introduced to adjust the theory so as to meet the design of magnetic suspension absorber. Base on it, the whole configuration of ambulance stretcher isolating system is analyzed, and a sort of Three degrees of freedom translation parallel robot mechanisms is applied to ambulance stretcher isolating system, a newly magnetic suspended absorber with three Degrees of Freedom Translation is put forward and developed, and its good capabilities of kinematics and vibration isolating are validated by math model analysis, the software-ADAMS simulation and experiment test.