FUNDAMENTAL RESERCH ON THE NONLINEAR VIBRATION AND MOTION CONTROL OF A MAGLEV-SYSTEM

点击翻译按钮获取中文摘要

Purpose of the Research (described in the initial application, with a few modifications) Results1. To complete algorithms/programs in order to identify the magnetic spring function. Arrived at the expected stage.2. To study theoretically the accuracy of identification in the magnetic spring function in the static field. Arrived at the expected stage.3. To study experimentally the accuracy of identification in the magnetic spring function in the static field. Experimental apparati are completed and work is progressing.4. To identify experimentally the repulsing magnetic field via the eddy current. especially the ultra high speed object. Experimental apparati are completed and work is progressing.5. To study problems of nonlinear vibration, chaos in particular, running (flux shearing) resistance and vibration damping in the models of the previous items 3 and 4. Experimental apparati are completed and work is progressing.Derived Problems results6. Computer simulation of nonlinear vibrations.Arrived at the expected stage and many papers were published.7. Studies of accurate numeration and/or solutions as well as functions. Many extended problems were found and work is progressing.Plan for future reseaches It is concluded that an apparetus for achieving a transonic high speed corresponding to the previous item 4 is incomplete because of the difficulty of the over-stress in the rotating wheel. thus, we developed a method to neutralize the stress by blowing a gas from outside of the wheel with the pressure corresponding to the centrifugal stress. The basic design is completed, however, the construction of the system is postponed because of financial problems.