Research On The Electromagnetically Active Vibration And Shock Control System For Magnet Storage Devices

The research on anti-vibration and anti-shock of hard disk drivers (L{DD) stems from the need of military hard disk and portable computer against severe environment. The thesis analyses the mechatronics dynamics model of the one-dimension active vibration isolation system used in miniature HDD, then confirms the plan of active control and reinforce from outside. The technique lies on not only the theoretical analysis and design, but also the physical implement of the execute equipment and the controller. We develop two execute sample machines. In order to control the more complicated model, we plan to use digital controller and we carry an initial research on it's algorithm. We also have a test to the complete set of system equipment. The test results show that the active control system can not only control wide-band vibration and shock together, but also improve the performance of vibration and shock isolation apparently. The thesis also designs a simulation software, and simulates the control system. In view of the influence of the dry friction force in execute equipment, the thesis remodifles the mechatromcs dynamics model and simulates the new model with the result that the new model can be in accord with the practice more perfectly. At last, two new execute equipment models without dry friction force are put forward as the discussable research. One is the double-reed electromagnetic execute equipment, and the other is the electromagnetic and permanent magnet suspension one.This research has the multi-disciplinary characteristic that involves machinery, electric, control and measurement. It can control wide-band vibration and strong shock at the same time which is hardly achived by traditional passive control system. Its achievements can be widely used in reinforcement of the computer peripheral on vehicles, naval vessels and spaceflighters ,etc.